Manual of U.S. Patent Classification
as of June 30, 2000

Class
171
UNEARTHING PLANTS OR BURIED OBJECTS

Class definitions may be accessed by clicking on the class title, above.
Subclass definitions may be accessed by clicking on the subclass number, below.

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Subclass		Title
ClassTitle		===> UNEARTHING PLANTS OR BURIED OBJECTS
1		METHODS OF RECOVERING BURIED OBJECTS
2		PLURAL ALTERNATELY USABLE UNEARTHING UNITS
3		STABILIZING COLTER OR FIN
4		WITH ADDITIONAL EARTH OR PLANT ROLLING IMPLEMENT
5		WITH VERTICAL CUTTER FOR VEGETATION
6		WITH EARTH MARKER OR TRAILING EARTH CONDITIONER
7		PERIODIC DUMPING IN PILES
8		DRIVE TRIGGERED BY DESIRED OBJECT
9		SUPPORT OVERLOAD RELEASE AND RESET; DRIVE OVERLOAD RELIEF; OR AUTOMATIC CONTROL
10		WITH PRELIMINARY REMOVAL OR UNDESIRED EARTH MATERIAL
11		REMOVABLE OR ALTERNATE COLLECTION RECEPTACLES
12		WITH APPARATUS CLEANER IN NONRECOVERY ZONE OF UNEARTHING UNIT
13		WITH TOOTHED MOVING STRIPPER OR PICK-OFF FOR UNDESIRED OBJECT
14		RECOVERED OBJECT PASSES THROUGH SEPARATOR INTERSTICES
15		. Assorting by size
16		RAILROAD BALLAST REMOVAL AND ASSORTING OR SEPARATING
17		SEPARATION OR ORIENTATION BY FLUID CURRENT OR SUSPENSION
18		SEPARATION BY PHYSICAL CHARACTERISTICS
19		WITH RAKE OR LATERAL DEFLECTOR FOR GROUND CONTACTING RECOVERED OBJECTS
20		WITH MANUAL OPERATION STATION (E.G., TOPPING, SEPARATION INSPECTION)
21		HOLDING AND SEVERING PLANT PORTION IN SITU
22		. Plural level cutters
23		WITH SELECTIVE DELIVERY TO ALTERNATE LOCATIONS (E.G., BY-PASS)
24		WITH COMMINUTING OR MULTIPLE CUTTING OF RECOVERED PLANT PART
25		WITH CLEANING OF RECOVERED OBJECT BY BRUSHING OR WIPING
26		WITH ABOVE-GROUND MEANS FOR DETACHMENT OF PLANT PART
27		. Detachment by pulling, beating, shaking or crushing
28		. . By opposed rotary gripping elements
29		. Separate successive topping stations
30		. By non-driven rotatable cutter (e.g., rolling)
31		. Conveyer feed to or from cutter
32		. . Cutter positioned by gauge
33		. . With driven gauge
34		. . With gauge
35		. . . Moved into transverse horizontal position for cutting
36		. . Held by conveyer during cutting
37		. . . With lateral disposal of cuttings
38		. . . Opposed belt conveyers
39		. . . Wheel-like conveyer
40		. With deflector or conveyer for detached plant part
41		. Moving topping cutter
42		. . Rotary or endless
43		COMBINED OR CONVERTIBLE
44		POWER MEANS TO SHIFT UNEARTHING UNIT PART
45		TRACTOR POWERED TRAILING UNEARTHING UNIT
46		UNEARTHING UNIT DETACHABLE FROM VEHICLE CHASSIS
47		UNEARTHING UNIT LATERALLY SHIFTABLE ON SUPPORT
48		SEPARATE DRAFT CONNECTIONS TO UNEARTHING UNIT AND UNEARTHING UNIT SUPPORT
49		MOVED OBJECT VOID FILLING OR EARTH HOLD DOWN
50		EXTRACTOR
51		. With agitator for extractor or extractor-carried object
52		. With movable stripper
53		. Plant impaling or snagging (e.g., roots or tops)
54		. . Retractible to strip
55		. Opposed plant engagers
56		. . Jaw means relatively movably mounted on carrier means
57		. . Screw
58		. . Disc or roller
59		. . Claw type
60		. . One a belt or belt carrier member
61		. . . Opposed belts or belt carried members
62		. With digger or root cutter
63		STONE GATHERING AND/OR UNEARTHING BY IMPELLING ABOVE-GROUND PLANT OR OBJECT PORTION
64		. With underground stalk or root severing
65		. Impeller inclined to line of draft
66		GROUND ENGAGING CHAIN SEPARATORS
67		WITH PRELIMINARY DEFLECTOR FOR SURFACE MATERIAL
68		. Driven deflector
69		. Moving deflector
70		TRANSVERSELY MOVING SINGLE TINE ROW
71		PLOW OR BLADE CONTINGUOUS TO VIBRATING SEPARATOR
72		. With resilient support or drive connection
73		. Transversely curved or inclined separator
74		. With side walls or guides
75		. Plural separator sets of with articulated elements
76		. . Relatively moving interdigitated sets
77		. Non-circular rolling support for a separator
78		. Ground supported trailing separator
79		. Supported on longitudinally spaced links
80		. Swinging about longitudinal or inclined axis
81		. Shifting laterally
82		UNEARTHING UNIT ROCKING OR FULCRUMED ON GROUND
83		LEADING PLOW OR CUTTER WITH CONTIGUOUS, FIXED INCLINED SEPARATOR
84		SEPARATING DIGGER (E.G., VERTICAL COLLECTING TINES)
85		. Moving impeller with cooperating circular arcuate guide
86		. Movable on supporting frame (e.g., pivoted)
87		. . With ejector on digger or digger carrier
88		. . Plural cooperating moving diggers
89		. . Moving diggers with intercepting moving stripper or conveyer
90		. . Moving digger with intercepting stripper or chute
91		. . Moving digger carrier with relatively moving digger
92		. . Separator or collector within annular or endless digger
93		. . Rolling or coaxial with traction wheel
94		. . Carried by endless flexible member
95		. . Rotary
96		. . . Conical digger portion
97		. . . Horizontal axis (e.g., longitudinal axis)
98		. . . . Transverse axis
99		. . Cyclic
100		. . Pivoted about ground wheel axle
101		. Separating digger intercepted by moving conveyer or impeller
102		. Laterally deflecting diggers
103		. Spaced, inclined shares or guides (pairs)
104		. Inclined lifting surfaces
105		. . Tines (e.g., forks)
106		. . Vertically stepped transverse elements
107		. Tooth or tine arrangements or details
108		TRACTION WHEEL DRIVE DETAILS FOR UNEARTHING UNIT PART
109		UNEARTHING UNIT OR VEHICULAR BREAK-FRAME
110		DIGGER AND MOVING CONVEYER UNIT ADJUSTABLE RELATIVE TO CHASSIS
111		EARTH REMOVAL AND SEPARATION
112		. Rolling screen or sieve (e.g., wheel or belt)
113		. Spiral conveyer for excavator or separator
114		. With impeller or clod breaker for excavator or separator
115		. . Transversely moving rotary member
116		. . Rotary
117		. . Endless belt type impeller or breaker
118		. . . Opposed endless members
119		. . . Excavator or separator within confines of endless impeller or breakers
120		. . . Endless impeller or breaker above excavator or separator
121		. . Impeller or breaker driven through cyclic path
122		. Clod pulverizer outside separating zone
123		. Conveyer disposed below separator
124		. Moving conveyer, digger or separator
125		. . Rolling nonseparating elevator or conveyer
126		. . Moving open separator or separating conveyer
127		. . . Compound motion (e.g., with agitator)
128		. . . Rotary cylinder with radially extending separating elements
129		. . . Rotary drum type
130		. . . Plural, successive, endless belt type
131		. . . Plural successive separators, one a belt
132		. . . Moving screen or grate (e.g., shaker)
133		. . . Relatively moving separator elements (e.g., rollers)
134		. . Moving digger and separate separator
135		. Separator formed in collector receptacle
136		. Digger and fixedly interconnected contiguous separator
137		WITH PROTECTIVE GUARD OR CASING
138		WITH MATERIAL REDIRECTING CONVEYER OR CHUTE
139		UNEARTHING UNIT FIXED ON VERTICALLY SHIFTABLE VEHICLE FRAME
140		UNEARTHING UNIT WITH GAUGE RUNNER OR WHEEL
141		LIFTING OR TILTING MEANS FOR UNEARTHING APPARATUS
142		DRIVE DETAILS (E.G., CLUTCH OR GEARING)
143		FRAMES AND/OR WHEELED CHASSIS
144		MISCELLANEOUS (E.G., HOPPER OR COLLECTOR)
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		DIGEST
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DIG 1		Peanut digger

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Last Modified: 6 October 2000