CLASS 173, TOOL DRIVING OR IMPACTING |
1 | PROCESSES: |
This subclass is indented under the class definition. Methods for operating tool driving or impacting devices
to perform a function which is not limited by a manipulative step
to a specific tool art.
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2 | AUTOMATIC CONTROL OF POWER OPERATED MEANS: |
This subclass is indented under the class definition. Apparatus comprising (1) means for sensing a condition or
change of condition, which condition or change of condition may
or may not occur, (2) a separate control means and (3) a separate
power operated means to initiate, modify, or terminate the functioning
of the apparatus, said three means being so related that the sensing
means controls operation of the control means and the control means
controls operation of the power means, all without the intervention
of a human operator.
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3 | . Responsive to condition of cleansing means: |
This subclass is indented under subclass 2. Apparatus in which the sensing means senses the condition
of (1) a specific modification of the tool drive which is for the
purpose of removing unwanted material from the work face being operated
on by the tool or (2) structure combined with the tool drive which
functions to remove unwanted material from the work face being operated
upon by the tool.
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4 | . Tool advance causing or controlling means: |
This subclass is indented under subclass 2. Apparatus in which the sensed condition of operation controls
a power operated means to initiate, modify, or terminate the operation
of the means to positively cause or progressively control the forward
movement of the tool into or along the work.
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5 | .. Responsive to torque or speed condition of drive: |
This subclass is indented under subclass 4. Apparatus in which the sensing means senses a condition
of (1) force applied to the tool to drive the tool about an axis
or (2) rate of motion of the drive means.
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6 | ... With additional control by means sensing condition of advance means: |
This subclass is indented under subclass 5. Apparatus in which the sensing means includes a means to also sense the condition of the means which causes or controls forward movement of the tool. | |
7 | ... Drive motor motivating energy condition initiates control: |
This subclass is indented under subclass 5. Apparatus in which means driving the tool comprises a motor,
and the sensing means senses a condition of the motor power material or
electric current.
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8 | .... Motive fluid flow or pressure condition of drive motor: |
This subclass is indented under subclass 7. Apparatus in which the drive motor power material comprises
a fluid which operates a fluid motor (e.g., expansible chamber type motor
or turbine).
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9 | ... Fluid flow or pressure operated advance means: |
This subclass is indented under subclass 5. Apparatus in which the means which causes or controls forward
movement of the tool comprises a motor operated by fluid.
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10 | .. Responsive to length of stroke of means reciprocating hammer head or tool: |
This subclass is indented under subclass 4. Apparatus in which the sensing means senses the distance of cyclic to and fro motion of a (1) hammer head or (2) tool. | |
11 | . Drive means responsive to condition of advance causing or controlling means: |
This subclass is indented under subclass 2. Apparatus in which the power means comprises a drive means
and the sensing means senses a condition of a means to positively cause
or progressively control the forward movement of the tool into or
along the work.
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176 | . Drive means responsive to torque speed condition: |
This subclass is indented under subclass 2. Apparatus in which the power operated means comprises a
drive means and the sensing means senses either (1) a condition
of force applied to the tool to move the tool about an axis or (2) the
rate of motion of the drive means.
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177 | .. Fluid pressure change controls drive: |
This subclass is indented under subclass 176. Apparatus wherein the torque or speed of the device is measured by sensing the force exerted on a surface by a gas or liquid, the sensed condition effecting a valve which modifies the tool operation. | |
178 | .. Having torque responsive clutch: |
This subclass is indented under subclass 176. Apparatus wherein a device to engage or to disengage the connection between the drive means and the power means is provided and operates in response to a change in the force applied to the tool to move the tool about an axis. | |
179 | .. With speed responsive governor: |
This subclass is indented under subclass 176. Apparatus including a regulator controlling the rate of motion of the drive means. | |
180 | .. With torque indicator: |
This subclass is indented under subclass 176. Apparatus wherein a means to display the amount of torque is provided. | |
181 | .. Having torque sensor: |
This subclass is indented under subclass 176. Apparatus wherein a means is provided to detect the torque produced by the tool. | |
182 | ... Strain gauge: |
This subclass is indented under subclass 181. Apparatus wherein the torque sensor converts mechanical motion into electrical impulse. | |
183 | ... Proximity angle detector: |
This subclass is indented under subclass 181. Apparatus wherein the torque sensor detects the amount of rotation of the drive means. | |
13 | DRIVE CONTROLLED BY RELATIVE AXIAL MOVEMENT OF TOOL: |
This subclass is indented under the class definition. Apparatus comprising a tool drive means and a tool or means
to receive or retain a tool for actuation by the drive means, the
tool or tool receiving or retaining means being adapted to move
relative to the drive in a direction parallel to the axis of tool
advance, said relative movement being adapted to initiate, modify,
or terminate the operation of the tool drive means.
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14 | . Reciprocating drive member connected to pulsing fluid column: |
This subclass is indented under subclass 13. Apparatus in which the relative movement starts the operation of the tool drive by causing a reciprocating element of the tool drive to be mechanically coupled to and directly operated by the pulsation or reciprocation of a confined mass of fluid. | |
15 | . Drive motor controlled: |
This subclass is indented under subclass 13. Apparatus in which the tool is driven by a motor and the relative movement initiates, modifies or terminates the operation of the tool drive motor. | |
16 | .. Modified internal motor operation: |
This subclass is indented under subclass 15. Apparatus in which the operation of the drive motor is initiated, modified, or terminated by a change in internal relationship of the parts of the motor. | |
17 | ... Motor piston movement modified relative to motive fluid port: |
This subclass is indented under subclass 16. Apparatus in which the tool drive motor is of the cyclically operable, expansible chamber type and the path of reciprocatory movement of a motor piston is altered relative to a port which supplies fluid to a working chamber of the motor or a fluid operated distributor motor. | |
18 | DRIVE CONTROLLED BY RELATIVE MOVEMENT OF ADVANCE CAUSING OR CONTROLLING MEANS OR MANIPULATING HANDLE: |
This subclass is indented under the class definition. Apparatus comprising a tool drive means and a means to positively
cause or progressively control the forward movement of the tool
or a means specifically adapted to be engaged by the hand of the
operator to manipulate the drive, and one of the latter means is adapted
to move relative to the drive means to operate a means to initiate,
modify, or terminate the operation of the tool drive means.
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19 | SELF-ACTING ADVANCE AND RETRACTION CYCLE: |
This subclass is indented under the class definition. Apparatus comprising a means to positively cause or progressively
control the forward movement of the tool into or along the work,
and which is adapted to reverse the movement of the tool upon the
tool reaching a predetermined position without the intervention
of a human attendant.
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20 | WITH INDICATING OR SIGNALING MEANS: |
This subclass is indented under the class definition. Apparatus combined with a means to indicate or signal a
condition or the occurrence of a condition to a human attendant.
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21 | . Distance of advance: |
This subclass is indented under subclass 20. Apparatus in which the means signals or indicates a position or condition of the forward movement of the tool into or along the work. | |
184 | WITH VEHICLE SUPPORT FOR DRIVE: |
This subclass is indented under the class definition. Apparatus combined with the significant structure of a vehicle
which is (1) adapted to move the tool drive from work station to
work station or (2) adapted to support and advance the tool drive
during operation.
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185 | . Pivoted: |
This subclass is indented under subclass 184. Apparatus in which the tool drive means is mounted to the transport means such that the drive swings about an axis in relation to the transport. | |
186 | . Nontransporting means to support vehicle during tool operation: |
This subclass is indented under subclass 184. Apparatus in which the vehicle is combined with additional
means to support the vehicle structure in a nontransporting condition
during the time the tool drive is operative.
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187 | .. Adjustable nontransporting means: |
This subclass is indented under subclass 186. Apparatus wherein the nontransporting means to support the vehicle has means to vary its supporting position. | |
188 | ... Having screw threads: |
This subclass is indented under subclass 187. Apparatus wherein the means to vary the support position includes a helically threaded member. | |
189 | ... Having fluid cylinder: |
This subclass is indented under subclass 187. Apparatus wherein the means to vary the support position includes an air or gas powered expansible chamber. | |
24 | . Movement of vehicle causes tool advance: |
This subclass is indented under subclass 184. Apparatus in which the travel of the vehicle is utilized
to positively cause forward movement of the tool into or along the
work.
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25 | . Vehicle motor mechanically coupled to drive tool: |
This subclass is indented under subclass 184. Apparatus in which the means to power the transporting movement
of the vehicle is provided with a mechanical power take-off to drive
the tool.
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26 | .. Drive gearing displaced relative to source of power: |
This subclass is indented under subclass 25. Apparatus in which the means to drive the tool includes gear means, and elements of the gear means are adapted to move relative to the power take-off of the vehicle to (1) adjust the axis of tool advance or (2) accommodate movement of the tool into or along the work. | |
27 | . Vehicle motor and drive motor powered by same energy source: |
This subclass is indented under subclass 184. Apparatus in which the same source of energy (e.g., current,
pressure, fuel, etc.), motivates the power means for the vehicle
and the tool drive.
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28 | . Drive structure moved to nonuse position for transport: |
This subclass is indented under subclass 184. Apparatus in which the supporting structure of the tool
drive is constructed in such a manner as to adapt the tool drive
to be moved from the position in which the tool normally works to
a position which better facilitates transportation.
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29 | CONVERTIBLE: |
This subclass is indented under the class definition. Apparatus in which means are provided to perform a tool
drive function and a tool drive function in a different manner or
a function other than tool driving after (1) removal of a significant
portion of the apparatus (2) installation of additional parts or
(3) substantial rearrangement of existing parts.
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30 | WITH MEANS ENGAGED BY PART OF HUMAN OTHER THAN HAND: |
This subclass is indented under the class definition. Apparatus combined with structure particularly adapted to be engaged by some portion of the body of a human, with the exception of the hands. | |
31 | WITH WORK ENGAGING MEANS SUPPORTING DRIVE: |
This subclass is indented under the class definition. Apparatus combined with the structure of means other than
the tool, which is specifically adapted to engage the material upon
which the work is being performed, said structure bearing the weight
of the tool drive or resisting the reactive force of the means causing
forward movement of the tool while the tool drive is operative.
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32 | . Anchored to work: |
This subclass is indented under subclass 31. Apparatus in which the work engaging means comprises a structure adapted to positively engage the material being worked at a point in the face being worked (e.g., the face perpendicular to the axis of tool advance), in such a manner as to resist reactionary movement of the means causing forward movement of the tool into the work. | |
33 | .. Balanced with respect to axis of tool advance: |
This subclass is indented under subclass 32. Apparatus in which the axis of tool advance forms substantially the geometric center of points of engagement of the means which positively engages the work. | |
34 | . Structure extends between opposed points: |
This subclass is indented under subclass 31. Apparatus in which the material being worked is engaged by the structure at opposed points, such as opposed positions on the walls of a shaft or tunnel. | |
35 | .. Tool advanced laterally of structure: |
This subclass is indented under subclass 34. Apparatus in which the drive is adapted to operate a tool to advance along an axis substantially perpendicular to a line extending between the opposed points of engagement. | |
36 | . Structure engages work at point diametrically opposed to tool: |
This subclass is indented under subclass 31. Apparatus in which the structure engages the material being worked at a point opposite to the working point, generally being the opposed wall of a shaft or tunnel. | |
37 | . Relatively adjustable work engaging elements: |
This subclass is indented under subclass 31. Apparatus in which the work engaging structure includes plural work engaging elements, and an element is adapted to be adjusted relative to the tool drive means and relative to another work engaging element. | |
38 | SWINGING ARM CAUSES ADVANCE WITH MEANS TO GUIDE RECTILINEAR TOOL ADVANCE: |
This subclass is indented under the class definition. Apparatus having means to cause forward movement of the tool into or along the work comprising a lever, one end of which is mounted to pivot about a fixed or shifting point and the opposite end being connected to the tool or tool drive, the forward movement of the tool being substantially rectilinearly controlled by (1) shifting the pivot point or (2) directly guiding the tool or tool drive. | |
39 | WITH MEANS TO ADJUST POSITION OF AXIS OF TOOL ADVANCE: |
This subclass is indented under the class definition. Apparatus in which the tool drive means is adjustably connected
to a substantially fixed structure (e.g., support), and means are
provided to hold the tool drive means in different positions relative
to the fixed structure to provide plural selective positions of
the axis along which the driven tool moves forward into the work.
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40 | . Drive gearing displaced relative to source of power: |
This subclass is indented under subclass 39. Apparatus in which the tool drive includes a source of power
and a driven gearing element, and said gearing element being shifted
bodily relative to the source of power in adjusting the axis along
which the tool moves forward.
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41 | .. With plural relatively displaced gearing sections: |
This subclass is indented under subclass 40. Apparatus in which the tool drive includes plural driven gearing elements, and the gearing elements being relatively bodily shifted and each bodily shifted relative to the source of power in adjusting the axis along which the tool moves forward. | |
42 | . Plural adjustments: |
This subclass is indented under subclass 39. Apparatus in which plural separate adjustments are provided between the tool drive and fixed structure. | |
190 | .. Powered by motor or mechanism: |
This subclass is indented under subclass 42. Apparatus in which a device is provided to operate at least one of the adjustments which either (1) converts chemical or electrical energy or fluid pressure into mechanical energy or (2) contains a mechanical linkage. | |
191 | ... Having screw threads: |
This subclass is indented under subclass 190. Apparatus wherein the mechanism has continuous helical grooves. | |
192 | ... Having turntable: |
This subclass is indented under subclass 190. Apparatus wherein the mechanism is a circular rotating platform. | |
193 | ... Having fluid motor: |
This subclass is indented under subclass 190. Apparatus wherein the motor is a pneumatic or hydraulic piston and cylinder type device. | |
194 | .... With mechanical movement: |
This subclass is indented under subclass 193. Apparatus wherein the fluid motor operates in conjunction with a mechanical device such as linkages, gears, etc. | |
195 | ..... With flexible endless member: |
This subclass is indented under subclass 194. Apparatus wherein the fluid motor operates in conjunction with a pliable, continuous line (e.g., rope or chain). | |
196 | ... Having flexible endless member: |
This subclass is indented under subclass 190. Apparatus wherein the mechanism is a pliable, continuous line such as a rope or chain. | |
44 | . Adjustment powered by motor or mechanism: |
This subclass is indented under subclass 39. Apparatus in which a motor or mechanism is provided to move the tool drive to relatively adjusted position. | |
45 | WITH MEANS TO SPACE AXIS OF TOOL ADVANCE RELATIVE TO PRIOR POSITION: |
This subclass is indented under the class definition. Apparatus combined with means such as a template or element
of predetermined length to locate an axis along which the driven
tool will move forward into the work relate to a position in which
the driven tool previously moved forward into the work.
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46 | COMBINED: |
This subclass is indented under the class definition. Apparatus combined with apparatus which is not included under the class definition and is not merely ancillary to the driving means, a means for advancing the tool, a tool drive manipulating means, or a work cleansing means. | |
47 | DRIVE ADJUSTABLE TO COMPLETELY CHANGE KIND OF DRIVE: |
This subclass is indented under the class definition. Apparatus including an adjustable drive means so constructed
that the basic kind of motion imparted to the tool may be changed
by manipulating a drive part (e.g., shifting gears in a transmission).
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48 | . Adjustable to impacting device: |
This subclass is indented under subclass 47. Apparatus in which the drive means is adjustable to or from
means to deliver an impact to a tool.
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49 | DRIVE BY MEANS REACTING TO ROTATING ECCENTRIC MASS: |
This subclass is indented under the class definition. Apparatus in which the tool drive means includes a mass
which is driven about an axis, the axis of rotation being eccentric
relative to the center of weight of the mass, said mass causing
movement of an element which supports said axis of rotation when
the center of weight of the mass reaches a certain position relative
to the axis of rotation of the mass to drive the tool.
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50 | POWER PATHS TO PLURAL TOOLS FROM SINGLE DRIVE: |
This subclass is indented under the class definition. Apparatus comprising a motor or drive element connected
to plural power paths to simultaneously drive plural tools.
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51 | . Drive plural means to reciprocate hammer heads or tools: |
This subclass is indented under subclass 50. Apparatus in which at least two of the power paths include means to impart a rectilinear to and fro movement to a tool or the hammer head or an impact delivering device. | |
52 | SINGLE ADVANCE CAUSING OR CONTROLLING MEANS OR MANIPULATING FOR PLURAL DRIVES: |
This subclass is indented under the class definition. Apparatus comprising plural separately operable tool drive
means which are supported by a common rigid structure combined with
a single advance causing or controlling means or manipulating means
for the rigid structure.
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53 | HAMMER OR TOOL SHAFT RECIPROCATED BY GRIPPING MEANS WHICH RELEASE OR YIELD TO PERMIT ADVANCE: |
This subclass is indented under the class definition. Apparatus in which a hammer head or tool includes a rod
or rod like structure rigidly connected thereto, and the drive means includes
means to grasp said rod or rod like structure, and a means to reciprocate
the grasp means, said grasp means permitting the hammer head or
tool to move forward relative to the reciprocatory path of the grasp
means by (1) cyclic release by the rod or rod like means by the
grasp means or (2) relative slippage between the grasp means and
rod or rod like means as the work progresses.
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54 | . With fixed means cyclically contacted by grip structure: |
This subclass is indented under subclass 53. Apparatus in which during each cycle of reciprocation the grasp means engages a stationary structure to cause the grasp means to release or slip the rod or rod like means to permit the hammer head or tool to move forward as the work progresses. | |
55 | .. Contact moves grips out of shaft engagement: |
This subclass is indented under subclass 54. Apparatus in which cyclic engagement of the grasp means with the stationary structure positively releases the grasp means from the rod or rod like structure. | |
56 | . Means concurrently moving shaft about an axis: |
This subclass is indented under subclass 53. Apparatus in which the grasp means, or means causing reciprocatory movement thereof, simultaneously causes the rod or rod like means to rotate or oscillate during each cycle of reciprocation of the grasp means. | |
197 | WORK CLEANSING: |
This subclass is indented under the class definition. Apparatus including (1) a specific modification of the tool
drive which is for the purpose of removing unwanted material from
the work face being operated upon by the driven tool or (2) structure
combined with the tool drive which functions to remove unwanted material
from the work face being operated upon by the driven tool.
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58 | . Controlled by relative movement between drive and tool, advance causing or controlling means or manipulating means: |
This subclass is indented under subclass 197. Apparatus in which the operation of work cleansing is initiated,
modified, or terminated by relative movement between the tool drive and
(1) the tool, (2) the means to positively cause or progressively
control the forward movement of the tool or (3) a means specifically
adapted to be engaged by the hand of the operator to manipulate
the drive.
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59 | . By motive fluid for drive motor or advance causing or controlling motor: |
This subclass is indented under subclass 197. Apparatus in which the cleansing is performed by fluid derived
from a motive fluid stream supplied to or exhausted from a drive
motor or an advance causing or controlling motor.
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60 | .. Motive fluid does not contact work but induces flow of another fluid: |
This subclass is indented under subclass 59. Apparatus in which the motive fluid stream does not contact the work face, but is provided with means to induce flow of an ambient fluid (e.g., a venturi) to cause the ambient fluid to circulate over and cleanse the work face. | |
61 | .. Additional cleansing fluid source: |
This subclass is indented under subclass 59. Apparatus in which a means is provided to utilize a fluid from a nonmotor source for cleansing, as well as a fluid derived from the supply or exhaust of the motor. | |
62 | ... With means providing for independent use of either fluid: |
This subclass is indented under subclass 61. Apparatus in which means are provided to selectively control the supply of both fluids, whereby either one of the fluids may be separately admitted to the work face. | |
63 | ... Motive fluid for cleansing bypasses motor chamber: |
This subclass is indented under subclass 61. Apparatus in which means are provided to derive motive fluid to be utilized for cleansing from the stream which supplies the motor, before the fluid passes into a motor chamber. | |
64 | .. Supply for cleansing bypasses motor chamber: |
This subclass is indented under subclass 59. Apparatus including means which are provided to derive motor
fluid to be utilized for cleansing from the stream which supplies
the motor, before the fluid passes into a motor chamber.
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65 | ... Controlled by motor inlet throttle valve: |
This subclass is indented under subclass 64. Apparatus having the means which controls the rate of flow of motive fluid to the motor chamber said means being provided with additional structure to control the supply of motive fluid which is to be utilized for cleansing. | |
66 | .. Fluid supplied through working chamber of idled cyclically operable drive motor: |
This subclass is indented under subclass 59. Apparatus in which the drive motor comprises a cyclically operable reciprocating type expansible chamber fluid motor, and a specific modification of the motor is provided whereby the motor may be controlled to stop operation and simultaneous continuously direct the flow of the motive fluid stream through one working chamber of the motor for direction upon the work to perform a cleansing function. | |
67 | ... Supplied through distributor maintained in fixed position: |
This subclass is indented under subclass 66. Apparatus in which the cyclically operable motor includes a relatively movable motive fluid distributor, and means are provided to stop relative movement of the distributor during the continuous flow of motive fluid through one working chamber. | |
68 | .... Motor inlet throttle valve maintains distributor fixed: |
This subclass is indented under subclass 67. Apparatus in which the motor is provided with a throttle valve controlling the inlet of motive fluid, and the throttle valve is adapted either by direct engagement or through a linkage to stop relative movement of the distributor for the purpose of maintaining cleansing fluid supply through one working chamber. | |
69 | .... Motor exhaust throttled: |
This subclass is indented under subclass 67. Apparatus in which the motor is provided with a throttle valve to control the exhaust of motive fluid from the motor, and actuation of said valve to control exhaust also functions to stop the distributor and maintain cleansing fluid supply through one working chamber. | |
70 | .... Mechanically maintained in fixed position: |
This subclass is indented under subclass 67. Apparatus in which a mechanical means is provided to stop relative movement of the distributor while cleansing fluid is continuously supplied through one working chamber. | |
71 | .. With means to inhibit return of detritus into cleansing passage: |
This subclass is indented under subclass 59. Apparatus in which means are provided for the purpose of preventing unwanted material (such as material removed from the work face) from entering the motor through a cleansing fluid passage. | |
72 | .. Fluid supplied through chamber of advance causing or controlling motor: |
This subclass is indented under subclass 59. Apparatus in which the motive fluid for cleansing is exhausted from a motor which causes or controls advance. | |
73 | .. Directed into passage in tool: |
This subclass is indented under subclass 59. Apparatus having means to direct the motive fluid into a passage in a tool or tool shaft, from which passage the fluid is directed upon the work face. | |
74 | . Plural cleansing fluid sources: |
This subclass is indented under subclass 197. Apparatus in which means are provided to selectively or
simultaneously utilize fluids from separate supplies for cleansing.
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75 | . Cleansing fluid pump operated by drive: |
This subclass is indented under subclass 197. Apparatus in which the tool drive means pumps or mechanically drives a pump means to pressurize or cause circulating of a fluid material which performs a cleansing function. | |
76 | .. Pump comprises hammer head or impact transmitting anvil: |
This subclass is indented under subclass 75. Apparatus in which the pump means to pressurize or cause circulation of the fluid material comprises the hammer head or impact transmitting anvil of an impacting device. | |
77 | . Cleansing fluid controlled by control for drive or advance causing or controlling means: |
This subclass is indented under subclass 197. Apparatus in which the fluid material for cleansing is controlled by an element which also controls the drive means or advance causing or controlling means. | |
78 | . Cleansing fluid passage through hammer head: |
This subclass is indented under subclass 197. Apparatus in which the mass of material which comprises the hammer head of an impacting device is provided with a passage which is specifically described as for the purpose of conveying fluid cleansing material. | |
79 | . Drive motor or advance causing or controlling motor provided with passage for cleansing fluid: |
This subclass is indented under subclass 197. Apparatus in which structure necessary to the operation of a tool drive motor, or advance causing or controlling motor is provided with a passage which is specifically described as for the purpose of conveying fluid cleansing material. | |
80 | . Cleansing fluid passage in impact transmitting anvil: |
This subclass is indented under subclass 197. Apparatus in which a mass of material which is adapted to transmit an impact from a hammer head to a tool is provided with a specific passage which is described as for the purpose of conveying fluid cleansing material. | |
198 | . Using vacuum or reverse circulation: |
This subclass is indented under subclass 197. Apparatus using either (1) a suction or (2) a circulation
of fluid up through a tool in a direction opposite normal operation
to remove unwanted material.
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199 | . Having outside conduit to supply cleansing fluid: |
This subclass is indented under subclass 197. Apparatus wherein a supply line delivers a fluid to the tool without going through the working parts of the tool. | |
81 | MEANS TO CONTROL ADVANCE AND CYCLICALLY RECIPROCATE A CABLE-OPERATED HAMMER OR TOOL: |
This subclass is indented under the class definition. Apparatus comprising the combination of means to cause reciprocation
of a hammer head or tool by a cable, or similar flexible element, and
a means to control the cable for the purpose of controlling the
forward movement of the path of reciprocatory movement of the hammer
head or tool.
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82 | . With means to synchronize advance with reciprocating drive: |
This subclass is indented under subclass 81. Apparatus in which the means to reciprocate the hammer head or tool cyclically actuates a means to control forward movement of the hammer head or tool so that the advance is only permitted at a certain point in each cycle of reciprocation. | |
83 | . Advance means bodily reciprocated: |
This subclass is indented under subclass 81. Apparatus in which the means to control forward movement of the hammer head or tool is bodily reciprocated by a separate means which causes the reciprocation of the hammer head or tool. | |
84 | . Hammer or tool cyclically disconnected from cable: |
This subclass is indented under subclass 81. Apparatus in which means are provided to cyclically release
the driving connection between the cable, or similar flexible element, and
the hammer head or tool.
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85 | . With plural cable drums: |
This subclass is indented under subclass 81. Apparatus including at least two drums which receive plural
turns of cable.
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86 | . Relatively elevated guide engaging cable between drive and hammer or tool: |
This subclass is indented under subclass 81. Apparatus in which a structure is provided to support the cable or similar flexible element against gravity at a relatively elevated point between the means causing the cable or similar flexible element to reciprocate, and the hammer head or tool. | |
87 | .. Drive is oscillating cable drum: |
This subclass is indented under subclass 86. Apparatus in which the means causing the cable or similar flexible element to reciprocate comprises a drum receiving plural turns of the cable, the drum being oscillated about an axis to cause the reciprocation. | |
88 | .. Drive is oscillating cable engaging means: |
This subclass is indented under subclass 86. Apparatus in which the means causing the reciprocation of
the cable comprises a cable engaging element which is oscillated.
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89 | ... Drive permits hammer or tool to freely drop: |
This subclass is indented under subclass 88. Apparatus in which the drive to the oscillating cable engaging element is cyclically disconnected to permit the hammer head or tool to substantially freely drop under the sole influence of gravity. | |
90 | IMPACTING DEVICES (E.G., HAMMERS): |
This subclass is indented under the class definition. Apparatus comprising a mass of material (i.e., hammer head)
which is specifically intended to deliver a blow to a tool.
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91 | . Selective axial direction of impact: |
This subclass is indented under subclass 90. Apparatus in which the hammer is selectively operable to deliver impacts in axially opposed directions. | |
92 | . With means to grip and release tool in timed relation to impact: |
This subclass is indented under subclass 90. Apparatus including a means to mechanically clutch and release the tool or tool shaft during each cycle of operation of the hammer. | |
93 | . With anvil arranged to transmit torsional impact to tool: |
This subclass is indented under subclass 90. Apparatus including an anvil which is related to a hammer
head in such a manner as to transmit a blow from a hammer to the
tool to rotate the tool about an axis.
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93.5 | .. Rotary tool drive having torque responsive impact: |
This subclass is indented under subclass 93. Apparatus in which driving means for the hammer head rotates
the tool without impact under one torsional load condition and includes means
which release or yield under a different torsional load condition
whereby the hammer head delivers a blow to the anvil to cause rotary movement
of the tool.
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93.6 | ... Hammer head reciprocates along rotary axis: |
This subclass is indented under subclass 93.5. Apparatus in which the hammer head reciprocates on a line coincident with or parallel to the axis of rotation of the tool. | |
93.7 | .. Torque transmitted from hammer head traveling axially only: |
This subclass is indented under subclass 93. Apparatus in which the anvil is adapted to transmit a tool
rotating blow from a hammer head which is limited to rectilinear
movement along or parallel to the axis of rotation of the tool.
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94 | . Hammer head moves in arcuate path or rotates: |
This subclass is indented under subclass 90. Apparatus in which the hammer, or a portion thereof, travels
substantially upon some portion of a path generated by a point moving
at a constant distance about a relatively fixed axis.
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95 | .. Hammer head reciprocates along fixed transverse axis: |
This subclass is indented under subclass 94. Apparatus in which the hammer reciprocates on a path coincident
with or parallel to the axis.
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96 | ... Arcuate or rotary movement selectively releasable or variable independent of reciprocation: |
This subclass is indented under subclass 95. Apparatus in which means are provided to selectively release or vary the movement in the path generated about an axis without stopping or changing the reciprocation in the path coincident with or parallel to the axis. | |
97 | ... Arcuate or rotary movement transmitted to tool: |
This subclass is indented under subclass 95. Apparatus in which the hammer is coupled to the tool to
cause the tool to move in the path generated about an axis.
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98 | .. Hammer head moves out of arcuate or rotary path: |
This subclass is indented under subclass 94. Apparatus including means for permitting or causing the hammer to detour from the path generated about an axis, this movement being usually for permitting the hammer to clear the tool or anvil after the delivery of a blow thereto. | |
99 | ... Movement out of path is about rotating pivot: |
This subclass is indented under subclass 98. Apparatus in which the hammer detours from the path generated about an axis by moving in a second path generated about an axis. | |
100 | .. Hammer head movement is oscillatory: |
This subclass is indented under subclass 94. Apparatus in which the hammer cyclically reverses direction of movement in the path generated about an axis. | |
101 | . Plural relatively moved hammer heads: |
This subclass is indented under subclass 90. Apparatus in which the hammer includes plural relatively
movable impacting heads which are adapted to alternately impart
cyclic impacts to a tool.
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102 | .. One impacts another: |
This subclass is indented under subclass 101. Apparatus in which one impacting head imparts impact to a tool by striking another impacting head. | |
103 | .. Concentric: |
This subclass is indented under subclass 101. Apparatus in which the relatively movable impacting heads are arranged in such a manner that a common line passes through the geometric centers of both heads. | |
104 | . With means for rotating tool: |
This subclass is indented under subclass 90. Apparatus including means to cause the tool to move about an axis. | |
105 | .. Rotated by separate motor: |
This subclass is indented under subclass 104. Apparatus in which the tool is moved about an axis by a motor which does not drive the hammer head. | |
106 | ... Rotation motor exhaust is motive fluid for hammer motor: |
This subclass is indented under subclass 105. Apparatus in which the hammer head is driven by a fluid motor and means are provided to convey fluid which has been utilized in a fluid motor which causes the tool to move about an axis to the second motor which drives the hammer head, said fluid being further utilized as motive fluid in said second motor. | |
107 | ... Motive fluid supplied to rotation motor is hammer motor exhaust: |
This subclass is indented under subclass 105. Apparatus in which the hammer head is driven by a fluid motor and means are provided to convey the fluid which has been utilized in the hammer head driving motor to a fluid motor which causes the tool to move about an axis, said fluid being further utilized as motive fluid in said second motor. | |
108 | ... Reciprocating type separate motor: |
This subclass is indented under subclass 105. Apparatus in which the motor which causes the driven element to move about an axis is provided with a working member which cyclically moves to and fro. | |
109 | .. Rotated by hammer head or drive for hammer head: |
This subclass is indented under subclass 104. Apparatus in which means are provided to transmit movement
of the hammer head or the means driving the hammer head to the tool
for the purpose of moving the tool about an axis.
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110 | ... Rotation is intermittent or oscillatory: |
This subclass is indented under subclass 109. Apparatus in which the tool is moved about an axis step by step or cyclically reversed. | |
111 | .... Rotary drive path is directly through hammer head: |
This subclass is indented under subclass 110. Apparatus in which the hammer head comprises an element
in the drive train for moving the tool about an axis.
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112 | . With means to cause or control advance of hammer head: |
This subclass is indented under subclass 90. Apparatus including a means to positively cause or progressively
control the forward movement of the hammer head in driving the tool
into or along the work, such motion being in addition to the regular
impacting motion of the hammer head.
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113 | .. Advance operated by hammer drive or actuated in response to hammer vibration: |
This subclass is indented under subclass 112. Apparatus in which the means for positively causing or progressively
controlling the forward movement of the hammer head is actuated
by (1) mechanical connection to the hammer head or drive therefor
or (2) pulsations caused by the cyclic impacts or reversal of direction
of the hammer element or a drive element therefor.
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114 | . With means to reciprocate tool: |
This subclass is indented under subclass 90. Apparatus including an additional means to reciprocate the tool. | |
115 | . Length of cyclic travel of hammer head selectively adjustable: |
This subclass is indented under subclass 90. Apparatus including means selectively operable to change the distance that the hammer head moves in delivering an impact. | |
200 | . Hammer head driven by pulsating fluid pressure: |
This subclass is indented under subclass 90. Apparatus in which a force is applied and subsequently released
in rapid succession to a hammer head by a mass of fluid.
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201 | .. Pulsation caused by mechanical movement: |
This subclass is indented under subclass 200. Apparatus wherein application and subsequent release of the fluid force is caused by movable, mechanically operated elements. | |
117 | . Hammer head driven by electric motor: |
This subclass is indented under subclass 90. Apparatus in which the motion of the hammer head is caused
by an electric motor.
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118 | . Spring bodily cyclically moved with hammer head: |
This subclass is indented under subclass 90. Apparatus in which a resilient member is arranged to transmit
force to a hammer head, and said member moves in entirety during
each stroke of the hammer head.
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202 | . Hammer head driven by spring: |
This subclass is indented under subclass 90. Apparatus in which the motion of the hammer head, at least in one direction, is caused by the recoil of a resilient element which has been strained or compressed. | |
203 | .. Having cam to compress spring: |
This subclass is indented under subclass 202. Apparatus including an eccentric or irregularly shaped surface used to squeeze the spring. | |
204 | .. Fluid spring: |
This subclass is indented under subclass 202. Apparatus wherein the resilient element is a fixed volume
of a compressible pneumatic or hydraulic fluid contained in a chamber
on either side of the hammer head.
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120 | .. With means to adjust spring force: |
This subclass is indented under subclass 202. Apparatus in which a means is included to selectively vary the degree to which the resilient element is strained. | |
121 | .. Spring retracts hammer head: |
This subclass is indented under subclass 202. Apparatus in which the recoil of the resilient element retracts the hammer head from delivering a blow. | |
122 | . Hammer head driven by relatively moving motion transmitting element: |
This subclass is indented under subclass 90. Apparatus in which the means transmitting drive motion from
a source of power to the hammer head includes an element which cyclically
moves relative to the hammer head.
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205 | .. Rotary cam: |
This subclass is indented under subclass 122. Apparatus in which the relatively moving means which transmits
drive motion includes an element which moves about an axis, and which
element includes a movement imparting slide surface impacting movement
to another element, said slide surface being arranged at variable
distances relative to the axis of rotation whereby rotation of the
element imparts relative motion to said other element.
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124 | .. Cyclically disconnected from motion transmitting element: |
This subclass is indented under subclass 122. Apparatus in which the hammer head and motion transmitting
element are coupled and uncoupled during each blow delivering cycle of
movement of the hammer head.
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125 | . Hammer head constitutes or fixed to drive motor cylinder: |
This subclass is indented under subclass 90. Apparatus in which the mass of material which forms the
hammer head includes an internal chamber which receives the piston
of a motor, said internal chamber being adapted to receive motive
material to cause the mass of material to move relative to the piston
and deliver a blow.
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126 | . Hammer head comprises plural parts or diverse materials: |
This subclass is indented under subclass 90. Apparatus in which the hammer head is composed of (1) at
least two separate elements or (2) at least two separate materials.
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127 | .. Piston of drive motor: |
This subclass is indented under subclass 126. Apparatus in which the hammer head comprises or is rigidly
connected to a mass of material forming an element which is received in
a chamber, said element having surface which is acted upon by motive
material in the chamber to cause the element to move and deliver
a blow.
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128 | . Impact transmitting anvil: |
This subclass is indented under subclass 90. Apparatus comprising a mass of material which receives the
direct blow from the hammer and transmits the blow to the tool or
tool shaft.
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129 | .. Attachable at plurality of points along tool: |
This subclass is indented under subclass 128. Apparatus in which the impact transmitting mass of material is specifically adapted to be attached at more than one point to the tool or tool shaft in a direction parallel to the path of travel of the hammer head. | |
130 | .. Adapted to fit tool noncircular in cross section: |
This subclass is indented under subclass 128. Apparatus in which the impact transmitting mass of material is specifically adapted to engage a tool or tool shaft of a specific shape, other than circular in cross-section, at the location of engagement. | |
131 | .. Formed of plural transmitting part or separate layers: |
This subclass is indented under subclass 128. Apparatus in which the impact transmitting mass of material
comprises structure arranged such that the impact is transmitted
through (1) separate parts or (2) specified different materials.
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132 | .. With means to directly connect anvil to tool: |
This subclass is indented under subclass 128. Apparatus in which the impact transmitting mass of material
is provided with means to provide a direct and positive connection
to the tool or tool shaft.
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133 | .. Anvil retained for limited movement: |
This subclass is indented under subclass 128. Apparatus in which the impact transmitting mass of material is arranged relative to the tool in such a manner as to permit relative movement between said mass and said tool. | |
206 | . Hammer head constitutes piston of drive motor: |
This subclass is indented under subclass 90. Apparatus in which the hammer head comprises or is rigidly
connected to a disk or cylinder within a chamber, said disk or cylinder having
a surface which is acted upon by a motive fluid in the chamber which
causes the disk or cylinder to move and deliver a blow.
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207 | .. Having valve not directly associated with motive fluid for piston: |
This subclass is indented under subclass 206. Apparatus having a means to control fluid flow not immediately involved with the force transmitting fluid for the hammer head. | |
208 | ... With accumulator: |
This subclass is indented under subclass 207. Apparatus wherein a reservoir to contain the motive hydraulic or pneumatic fluid is provided. | |
209 | .. Driven by internal combustion engine: |
This subclass is indented under subclass 206. Apparatus whereinthe drive motor is powered by a gasoline or diesel piston engine in which fuel is burned within the engine proper. | |
135 | .. Motive fluid applied to striking face: |
This subclass is indented under subclass 206. Apparatus in which fluid motive material is applied to cause movement of the element, upon the surface of the element that strikes the blow. | |
136 | ... Supplied through passage in striking face: |
This subclass is indented under subclass 135. Apparatus in which the surface of the element which strikes the blow is provided with a port through which fluid motive material is supplied. | |
137 | ... Reduced area striking face: |
This subclass is indented under subclass 135. Apparatus in which the total area of the surface of the element to which fluid motive material is applied is greater than the area of the surface that strikes the blow. | |
138 | .. With means to conduct motive fluid to or from striking face: |
This subclass is indented under subclass 206. Apparatus in which a passage or port is provided to conduct
fluid motive material to or from the surface of the element that
strikes the blow, generally for the purpose of cooling, lubrication
or the removal of leakage motive fluid.
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210 | . With impact cushioning means: |
This subclass is indented under subclass 90. Apparatus including resilient or flexible structure which is external to the hammer head or drive therefor which functions to absorb a blow under some condition of operation, or is adopted to cushion against the transmission of vibrations resulting from the operation of the hammer drive. | |
211 | .. Mechanical spring: |
This subclass is indented under subclass 210. Apparatus wherein the impact cushioning means is a resilient element that recovers its shape after being stretched or compressed. | |
212 | .. Fluid spring: |
This subclass is indented under subclass 210. Apparatus wherein the impact cushioning means is a fixed
volume of compressible hydraulic or pneumatic fluid contained in
a chamber.
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140 | DRIVE GEARING ADVANCES RELATIVE TO SOURCE OR POWER: |
This subclass is indented under the class definition. Apparatus comprising a relatively fixed source of power
for driving a tool and cooperating mechanical motion converting
elements for transmitting the power from the source to the tool,
said cooperating mechanical motion converting elements advancing
with the tool and relative to the source of power.
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141 | ADVANCE CAUSING OR CONTROLLING MEANS: |
This subclass is indented under the class definition. Apparatus comprising a means to positively cause or progressively
control the forward movement of the tool into or along the work,
such movement being in addition to a cyclic forward and backward
or lateral motion of the tool.
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142 | . Operated solely by vibrations from reciprocating element in tool drive: |
This subclass is indented under subclass 141. Apparatus in which the means to cause or control forward
movement of the tool operates with no power input other than pulsations resulting
from the cyclic change of direction of movement of an element of
the tool drive means, which element moves to and fro in a substantially
rectilinear path.
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143 | .. Intermittent unidirectional rotation of advance element: |
This subclass is indented under subclass 142. Apparatus in which the movement resulting from the pulsations causes an element of the means moving the tool forward to move unidirectionally step by step about an axis. | |
144 | . Reciprocatory drive and advance originate from same mechanical element: |
This subclass is indented under subclass 141. Apparatus in which one mechanical motion converting element
transmits motion from a source of power to cause cyclic to and fro
rectilinear motion of a tool and to simultaneously cause or control
forward movement of the tool.
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145 | . Rotary drive and advance originate from same mechanical element: |
This subclass is indented under subclass 141. Apparatus in which one mechanical motion converting element
transmits movement from a source of power to drive the tool by rotating the
tool about an axis and to simultaneously cause or control forward
movement of the tool.
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146 | .. Friction clutch or torque yielding couple in connecting train: |
This subclass is indented under subclass 145. Apparatus in which the means connecting the mechanical motion converting element to the means to cause tool rotation or cause or control forward movement is provided with (1) a clutch having frictionally engaging elements or (2) a coupling which yields without breaking the drive train in response to the imposition of an excessive torque load. | |
147 | . Driven flexible member causes advance: |
This subclass is indented under subclass 141. Apparatus in which force to cause forward movement of the
tool is imparted to the tool or tool drive through an easily bendable
element which in normal operation is repeatedly curved and straightened
such as a belt, cable, chain, etc.
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148 | . Tool advances relative to drive: |
This subclass is indented under subclass 141. Apparatus in which the tool drive remains substantially axially fixed during operation while the tool axially moves forward relative thereto. | |
149 | .. Advance means engageable with tool shaft at any point: |
This subclass is indented under subclass 148. Apparatus in which the means to cause or control forward
movement of the tool includes structure adapted to engage the tool
or tool shaft at any point along the axial extent thereof, whereby
the axial extent of the forward movement of the tool or tool shaft
is not limited by the advance stroke of said advance means.
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150 | .. Advance motor working member coaxial with tool shaft: |
This subclass is indented under subclass 148. Apparatus in which the means to cause or control forward movement of the tool includes a motor having a moving power applying member which during operation is adapted to move forward upon an axis substantially coaxial with the axis upon which the tool is moving forward. | |
151 | .. Cable means controls advance: |
This subclass is indented under subclass 148. Apparatus comprising a means to coil or otherwise drive
a cable or similar flexible element which is connected to the tool
to control forward movement of the tool.
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152 | . Motor causes or controls advance: |
This subclass is indented under subclass 141. Apparatus in which the means for causing or controlling
forward movement of the tool includes a motor.
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153 | .. Drive motor exhaust is motive fluid for advance motor: |
This subclass is indented under subclass 152. Apparatus in which the motor for causing or controlling forward movement is a fluid motor and in which the tool is driven by a separate fluid motor, the motive fluid exhausted by the drive motor being utilized as motive fluid in the motor causing or controlling forward movement. | |
154 | .. Drive motor generates advance motor motive energy: |
This subclass is indented under subclass 152. Apparatus in which the tool is driven by a separate motor,
and the separate motor also operates a means (e.g., a pump or generator),
to produce a supply of motivating energy for use by the motor which
causes or controls forward movement of the tool.
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155 | .. Advance motor exhaust is motive fluid for drive motor: |
This subclass is indented under subclass 152. Apparatus in which the motor for causing or controlling forward movement is a fluid motor and in which the tool is driven by a separate fluid motor, the motive fluid exhausted by the motor causing or controlling forward movement being utilized as motive fluid in the drive motor. | |
156 | .. With lock or brake operable during advance: |
This subclass is indented under subclass 152. Apparatus combined with a lock or brake operable at least
one point between the limits of a complete forward movement stroke
to inhibit or prevent the tool from moving forward.
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157 | .. Common control element for advance and drive motors: |
This subclass is indented under subclass 152. Apparatus in which the tool is driven by a separate motor,
and a single element is provided to start and stop or regulate the
flow of motivating energy to both the drive motor and the motor for
causing or controlling forward movement of the tool.
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158 | ... With relatively movable advance motor control element: |
This subclass is indented under subclass 157. Apparatus in which an additional, separately movable means to start and stop or regulate the flow of motivating energy to the motor for causing or controlling forward movement of the tool is provided to control said motor independently of the drive motor. | |
159 | .. Common energy supply for advance and drive motors: |
This subclass is indented under subclass 152. Apparatus in which the tool is driven by a separate motor, and a supply of motivating energy flows from one source to both the drive motor and the motor for causing or controlling forward movement of the tool. | |
160 | .. Advance means includes relatively movable transmission element: |
This subclass is indented under subclass 152. Apparatus in which an element is moved relative to both
basic motor structure and the tool for transmitting motion to the
tool to cause or control forward movement of the tool.
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161 | .. Advance motor control in tool drive manipulating handle: |
This subclass is indented under subclass 152. Apparatus in which means specifically adapted to be engaged by the hand of an operator to manipulate the tool drive is provided with a relatively movable means to regulate the flow of motivating energy to the motor. | |
162.1 | INCLUDING MEANS TO VIBRATIONALLY ISOLATE A DRIVE MEANS FROM ITS HOLDER: |
This subclass is indented under the class definition. Subject matter having structure which a) is positioned between
an apparatus causing motion of a tool, i.e., tool drive means of
the apparatus, and b) functions to attenuate oscillatory or shock
motion originating in the tool drive means hindering its transfer
to the manipulating or supporting means.
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162.2 | . Handle type holder: |
This subclass is indented under subclass 162.1. Subject matter wherein the means for supporting or manipulation
the apparatus causing motion of the tool includes a part that is designed
to be grasped by a terminal appendage of an arm of a user, i.e.,
a hand.
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213 | MEANS TO DRIVE TOOL ABOUT AN AXIS: |
This subclass is indented under the class definition. Apparatus including means to impart torque to a tool and
move the tool about an axis.
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214 | . Plural tools: |
This subclass is indented under subclass 213. Apparatus wherein the drive means can power more than one tool. | |
215 | . Endless flexible drive means: |
This subclass is indented under subclass 213. Apparatus wherein a pliant, continuous line (e.g., rope, chain, etc.) powers the tool. | |
216 | . Gear drive: |
This subclass is indented under subclass 213. Apparatus wherein the drive means consists of toothed interengaging mechanical elements. | |
217 | . Electric motor: |
This subclass is indented under subclass 213. Apparatus wherein the drive means is a device which converts electrical energy to mechanical energy. | |
218 | . Fluid motor: |
This subclass is indented under subclass 213. Apparatus wherein the drive means is a pneumatically or hydraulically operated power device. | |
219 | .. Having sound attenuator: |
This subclass is indented under subclass 218. Apparatus wherein a means is provided to muffle or absorb acoustic vibration. | |
220 | .. With means to rotate reciprocating piston: |
This subclass is indented under subclass 218. Apparatus wherein a means is provided to revolve a linearly oscillating piston about its radial axis during its oscillation. | |
221 | .. With manual means to control motor: |
This subclass is indented under subclass 218. Apparatus wherein a means is provided that is directly actuable by an operator of the tool to regulate the motor. | |
222 | .. Plural motors: |
This subclass is indented under subclass 218. Apparatus having more than one motor. | |
164 | . Means to hold and relatively rotate sections of tool shaft: |
This subclass is indented under subclass 213. Apparatus comprising a means which is specifically described
as performing the dual functions of moving a tool about an axis
to cause a tool to perform work, and to prevent movement about an
axis of a section of tool shaft while moving another section of
tool shaft about an axis.
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165 | . Relatively fixed drive for an advancing tool: |
This subclass is indented under subclass 213. Apparatus in which the means to move the tool about an axis
remains fixed relative to the axis of tool advance and is adapted
to impart torque to the tool while the tool relatively advances.
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166 | .. With advance stopping means having selectively operable actuating mechanism: |
This subclass is indented under subclass 165. Apparatus combined with a means which is selectively useable to prevent relative tool advance, said means including a motor or a relatively movable operating element to actuate the means into advance preventing condition. | |
167 | .. With advance stopping means adapted to grip tool shaft at any point: |
This subclass is indented under subclass 165. Apparatus combined with a means to prevent relative tool
advance by grasping the tool or tool shaft at a plurality of positions
along the longitudinal axial extent of the shaft, which positions
do not have to be preconditioned compared with other positions on
the shaft to cooperate with the particular grasping means.
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168 | PASSAGE IN MANIPULATING HANDLE FOR DRIVE MOTOR MOTIVE FLUID: |
This subclass is indented under the class definition. Apparatus in which a means specifically adapted to be engaged by the hand of the operator to manipulate the drive is provided with internal structure to convey motive fluid to a fluid operated tool drive motor. | |
169 | . Motive fluid control valve in handle passage: |
This subclass is indented under subclass 168. Apparatus in which the internal structure of the means engaged
by the hand of the operator is further provided with a means to
permit or stop flow or adjust the rate of flow of fluid to the fluid
operated tool drive motor.
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170 | DRIVE CONTROL OPERABLE BY HAND ENGAGING MANIPULATING HANDLE: |
This subclass is indented under the class definition. Apparatus in which a tool drive means is provided with a
means specifically adapted to be engaged by the hand of an operator
to manipulate the drive and a means to control a tool drive (such
as a motor control or clutch operating means), the control being
related to the hand engaged manipulating means in such a manner
as to enable the tool drive to be controlled and manipulated by
a single hand of the operator.
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171 | MISCELLANEOUS: |
This subclass is indented under the class definition. Apparatus not provided for in other subclasses.
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FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
This subclass has no definition. | |
DIG1 | OPERABLE SUBMERGED IN LIQUID |
This subclass has no definition. | |
DIG2 | SOUND MUFFLING |
This subclass has no definition. | |
DIG3 | LUBRICATION |
This subclass has no definition. | |
DIG4 | LIQUID OPERATED |
This subclass has no definition. | |