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Classification Resources
 

 [Search a list of Patent Appplications for class 441]   CLASS 441,BUOYS, RAFTS, AND AQUATIC DEVICES
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SECTION I - CLASS DEFINITION

This class includes structure and attachments peculiar to mooring buoys, marker buoys, container buoys and other buoys; structure and attachment peculiar to rafts, and from analogy, to rafting and guiding of floating logs and similar material; water rescue apparatus; and other aquatic devices.

Water rescue apparatus include devices maneuvered on or over the water surface by one person in order to rescue another person, passenger enclosing devices which are not buoys, rafts or boats and garment or other type of buoyant members, commonly known as personal flotation devices which support a user in the water.

Aquatic devices include swimming aids to cause faster or farther propulsion through the water by the user"s own swimming strokes, buoyant or nonbuoyant devices which support a user and which are caused by external means to roll, skim, glide over or through the water, buoyant underwater viewing devices, and other miscellaneous buoyant support devices.

SECTION II - LINES WITH OTHER CLASSES AND WITHIN THIS CLASS

See Class 440, Marine Propulsion, for buoys or other aquatic devices comprising a motor propulsion means, or animal or human powered propulsion means other than swimming aids as defined in Class 441, subclass 55.

Lifeboats including those which enclose the passenger are classifiable in Class 114, Ships.

A buoyant device made to simulate an animal, fish, fowl, etc., or any part thereof, where such simulation is claimed, is proper for Class 472. However, where such simulation is disclosed but not claimed, classification of the buoyant device is proper for Class 441. See the (2) Note under subclass 129 of Class 441 for a statement of this line.

Class 441, subclass 65 takes all the skimming devices (skis, sleds, toboggans, etc.) which by claim or by disclosure may be used on water, even though also useable on snow or ice. Class 280, Land Vehicles, takes those skimming devices which are useable only on snow or ice.

SUBCLASSES

[List of Patents for class 441 subclass 1]    1BUOY:
 This subclass is indented under the class definition.  Device comprising a distinctly shaped, anchored device, such as cans, spars, nun, etc., especially adapted to float in water for the purpose of indicating a navigable channel, anchorage, some impediment or hazard to navigation, some object below the surface of the water, to provide a mooring or a support for some object, or to perform some other water related function.
  
[List of Patents for class 441 subclass 2]    2With means to call buoy to surface:
 This subclass is indented under subclass 1.  Buoy normally lying submerged under a body of water and including means to cause the buoy to surface in response to a transmitted signal.
  
[List of Patents for class 441 subclass 3]    3For mooring a vessel:
 This subclass is indented under subclass 1.  Buoy normally anchored to the seabed and having means for securing a marine vessel thereto.

SEE OR SEARCH CLASS:

114Ships,   subclasses 230.1+ for a mooring device for a ship, per se, in the absence of a mooring buoy.
  
[List of Patents for class 441 subclass 4]    4Having liquid cargo transfer means:
 This subclass is indented under subclass 3.  Mooring buoy including a fluid cargo conduit for transferring liquid cargo to a marine vessel.

SEE OR SEARCH CLASS:

137Fluid Handling,   subclass 236.1 for whole system combinations for offshore fluid handling; and subclass 615 for fluid handling systems not involving buoys having two or more sections joined for relative movement to assume various delivery or nonuse positions.
141Fluent Material Handling, With Receiver or Receiver Coacting Means,   subclass 279 for specific structure of the connection between the filling head and the receiver.
  
[List of Patents for class 441 subclass 5]    5Having swivel coupling for cargo conduit
 This subclass is indented under subclass 4.  Having swivel coupling for cargo conduit: Mooring buoy wherein a cargo conduit has a pipe fitting permitting a swinging movement of the marine vessel relative to the buoy.
  
[List of Patents for class 441 subclass 6]    6Marker buoy:
 This subclass is indented under subclass 1.  Buoy adapted to be anchored to a vessel or location on or under the waters surface to draw attention to the vessel or location.

SEE OR SEARCH CLASS:

116Signals and Indicators,   subclass 107 for audible signalling devices which can be placed on a buoy.
  
[List of Patents for class 441 subclass 7]    7Having means to release buoy upon submergence:
 This subclass is indented under subclass 6.  Buoy secured to a body or vessel by means which upon the sinking of the body or vessel is released to permit the buoy to surface and mark its location.

SEE OR SEARCH CLASS:

114Ships,   subclasses 326+ for submersible devices which have buoys that can be released.
  
[List of Patents for class 441 subclass 8]    8Water soluble or water weakened member:
 This subclass is indented under subclass 7.  Buoy wherein the buoy is attached to a body or vessel by securing means soluble in, dissolved in, or weakened by water such that upon contact with water the securing means is disabled thereby releasing the buoy.
  
[List of Patents for class 441 subclass 9]    9Gas assisted:
 This subclass is indented under subclass 7.  Buoy wherein the release of the buoy is assisted by a gas and wherein the release or generation of the gas is initiated by sinking of the body or vessel.
  
[List of Patents for class 441 subclass 10]    10Responsive to hydrostatic pressure:
 This subclass is indented under subclass 7.  Buoy wherein the securing means is activated by a device which is sensitive to changes in liquid pressure.
  
[List of Patents for class 441 subclass 11]    11With signalling device:
 This subclass is indented under subclass 6.  Buoy wherein means to draw attention to the buoy and its location is affixed thereon.

SEE OR SEARCH CLASS:

116Signals and Indicators,   signalling devices, per se.
  
[List of Patents for class 441 subclass 12]    12Audible:
 This subclass is indented under subclass 11.  Buoy wherein the attention drawing means is an audible signal, e.g., bell, whistle, etc.
  
[List of Patents for class 441 subclass 13]    13Illuminating:
 This subclass is indented under subclass 11.  Buoy wherein the attention drawing means produces light, e.g., lamps, torches, etc.
  
[List of Patents for class 441 subclass 14]    14By combustion of fluid:
 This subclass is indented under subclass 13.  Buoy wherein the light is produced by burning of a liquid or gas.
  
[List of Patents for class 441 subclass 15]    15Fluid produced by chemical reaction with water:
 This subclass is indented under subclass 14.  Buoy wherein the combustible liquid or gas is generated by the reaction of a chemical substance with water.

SEE OR SEARCH CLASS:

48Gas: Heating and Illuminating,   subclasses 1+ for acetylene generators using chemical reactions not adapted specifically to a marine environment.
  
[List of Patents for class 441 subclass 16]    16Electric light:
 This subclass is indented under subclass 13.  Buoy wherein the light is produced by an electric lamp.
  
[List of Patents for class 441 subclass 17]    17Having water activated switch:
 This subclass is indented under subclass 16.  Buoy wherein the electric lamp is controlled by a mechanical means which makes or breaks a circuit upon its submergence.
  
[List of Patents for class 441 subclass 18]    18Having water activated battery:
 This subclass is indented under subclass 16.  Buoy wherein the electric lamp is powered by an electrochemical battery activated by the water in which the buoy is located.
  
[List of Patents for class 441 subclass 19]    19Smoke producing:
 This subclass is indented under subclass 11.  Buoy wherein the attention directing means generates a smoke signal.
  
[List of Patents for class 441 subclass 20]    20Reflecting means:
 This subclass is indented under subclass 11.  Buoy wherein the attention directing device includes a surface capable of reflecting a light or a radar beam.
  
[List of Patents for class 441 subclass 21]    21Having means to control attitude or position:
 This subclass is indented under subclass 1.  Buoy provided with means to control vertical, horizontal, or rotational movement of the buoy.

SEE OR SEARCH CLASS:

114Ships,   subclasses 330+ for submersible devices having means for attitude control.
  
[List of Patents for class 441 subclass 22]    22Fluid reaction surface:
 This subclass is indented under subclass 21.  Buoy wherein a surface is provided which reacts with a fluid to produce a force for controlling the attitude or position of the buoy.
  
[List of Patents for class 441 subclass 23]    23Tether:
 This subclass is indented under subclass 21.  Buoy wherein a pliant fastening line is used to place the buoy at a predetermined location.
  
[List of Patents for class 441 subclass 24]    24Having playout means:
 This subclass is indented under subclass 23.  Buoy wherein means are provided for storing and feeding out the pliant line.
  
[List of Patents for class 441 subclass 25]    25Having means to control playout:
 This subclass is indented under subclass 24.  Buoy wherein the playout means includes means for regulating the amount of line played out, the rate of playout, or the tension on the line after it has played out.
  
[List of Patents for class 441 subclass 26]    26Reel for tether:
 This subclass is indented under subclass 24.  Buoy wherein the line is wound on a spool from which it is played out.
  
[List of Patents for class 441 subclass 27]    27Having seat for buoy:
 This subclass is indented under subclass 24.  Buoy wherein means is provided on a marine body or a vessel which conforms to a portion of the buoy and upon or within which the buoy rests.
  
[List of Patents for class 441 subclass 28]    28Having ballast means:
 This subclass is indented under subclass 21.  Buoy wherein the means to control the vertical, horizontal, or rotational movement includes a heavy material intended to alter the draft or stability of the buoy.
  
[List of Patents for class 441 subclass 29]    29Variable ballast:
 This subclass is indented under subclass 28.  Buoy wherein the ratio of heavy material to buoyancy producing agent may be varied.
  
[List of Patents for class 441 subclass 30]    30Inflatable:
 This subclass is indented under subclass 1.  Buoy wherein the body of the buoy is expanded from a collapsed position by a gaseous medium.
  
[List of Patents for class 441 subclass 31]    31Having chemical reactor to produce gas:
 This subclass is indented under subclass 30.  Buoy wherein the pressurized gas is generated on site by the chemical interaction of a plurality of substances.
  
[List of Patents for class 441 subclass 32]    32Container type:
 This subclass is indented under subclass 1.  Buoy provided with a space therein for storage of materials.
  
[List of Patents for class 441 subclass 33]    33With means to release transponder, sensor, etc.:
 This subclass is indented under subclass 32.  Buoy wherein a transponder, hydrophone, sensor, or other related instrument is contained within the storage space and means for selectively releasing such instruments from the storage space is provided.
  
[List of Patents for class 441 subclass 34]    34Storm oil distributor:
 This subclass is indented under subclass 32.  Buoy wherein oil for distribution on the surface of a body of water to calm wave activity is contained in the storage space and a means for distributing the oil is provided.
  
[List of Patents for class 441 subclass 35]    35RAFT:
 This subclass is indented under the class definition.  Buoyant device which is free floating, of shallow draft and little free board, and has a platform or floor for supporting a user.

SEE OR SEARCH CLASS:

5Beds,   subclasses 706+ for those devices commonly known as air mattresses, per se.
  
[List of Patents for class 441 subclass 36]    36With signal device:
 This subclass is indented under subclass 35.  Device including an attention getting device in the form of a flag, light, etc.
  
[List of Patents for class 441 subclass 37]    37Having water reactant stabilizing means:
 This subclass is indented under subclass 35.  Device including means to maintain a raft by limiting the effects of wave action on the raft.
  
[List of Patents for class 441 subclass 38]    38With shelter:
 This subclass is indented under subclass 35.  Device including a structure mounted on the floor or platform of a raft to protect an occupant from the elements.
  
[List of Patents for class 441 subclass 39]    39Having boarding aid:
 This subclass is indented under subclass 35.  Device including means for assisting a person floating in the water in climbing aboard the raft, i.e., ladders.
  
[List of Patents for class 441 subclass 40]    40Inflatable:
 This subclass is indented under subclass 35.  Device including a structural member used in forming the raft which is capable of being expanded by the introduction into the member of a fluent medium, e.g., gas.

SEE OR SEARCH THIS CLASS, SUBCLASS:

30,for inflatable buoys.
66,for inflatable water skimming or walking devices.
90+,for nonoral expanding means for personal flotation devices worn by the user.

SEE OR SEARCH CLASS:

114Ships,   subclass 345 for inflatable boats.
  
[List of Patents for class 441 subclass 41]    41Having inflation valve means:
 This subclass is indented under subclass 40.  Device including means to control the flow of the fluent medium into the structural member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

99,and 100, for valves used in nonoral expanding means for personal flotation device worn by user.

SEE OR SEARCH CLASS:

137Fluid Handling,   for fluid handling devices not specifically adapted for marine use.
251Valves and Valve Actuation,   for valve structure, per se.
  
[List of Patents for class 441 subclass 42]    42Having storage container for raft:
 This subclass is indented under subclass 40.  Device including a receptacle for holding the raft in a deflated condition.
  
[List of Patents for class 441 subclass 43]    43Having centrally located suspended basket
 This subclass is indented under subclass 35.  Having centrally located suspended basket: Device wherein the platform or floor of the raft is in the form of an open cage hanging in the center of the raft below the level of a surrounding buoyancy means.
  
[List of Patents for class 441 subclass 44]    44Columnar flotation member:
 This subclass is indented under subclass 35.  Device wherein the raft has an elongated buoyancy providing member having a cross-section with a periphery of a shape similar to a circle, or multiple sided geometric figure.
  
[List of Patents for class 441 subclass 45]    45Hollow:
 This subclass is indented under subclass 44.  Device wherein the buoyancy providing member contains a void.
  
[List of Patents for class 441 subclass 46]    46Barrel or drum:
 This subclass is indented under subclass 45.  Device wherein the buoyancy providing means is a cylinder of flat or slightly bulging sides having flat parallel ends and a ratio between the height and the diameter somewhat greater than one.
  
[List of Patents for class 441 subclass 47]    47Formed from log or other product:
 This subclass is indented under subclass 35.  Device in which logs or other similar raw material are formed into a raft in order to transport the same material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

134,for a float used to give a log additional buoyancy.

SEE OR SEARCH CLASS:

405Hydraulic and Earth Engineering,   subclass 60.5 for devices which guide floating logs around bends in a river or into holding areas along a river.
  
[List of Patents for class 441 subclass 48]    48Booming:
 This subclass is indented under subclass 47.  Device wherein logs are joined end to end so as to form a closed loop within which logs or similar material are placed to form a raft.
  
[List of Patents for class 441 subclass 49]    49Cribbing:
 This subclass is indented under subclass 47.  Device wherein a rigid framework of logs is provided into which other logs are placed to form a raft.
  
[List of Patents for class 441 subclass 50]    50Coupling means:
 This subclass is indented under subclass 47.  Device having means which joins and holds logs or similar material together.
  
[List of Patents for class 441 subclass 51]    51Dog:
 This subclass is indented under subclass 50.  Device wherein the joining means is a spike or wedgelike device driven into a log to couple one to another.
  
[List of Patents for class 441 subclass 52]    52Clamp:
 This subclass is indented under subclass 50.  Device wherein the joining means has opposite facing saws which may be adjusted to contain one or more logs between them.
  
[List of Patents for class 441 subclass 53]    53Transverse rigid member:
 This subclass is indented under subclass 50.  Device wherein the joining means is a bar, rod, or similar rigid member which is oriented transversely to and affixed to a log for the purpose of joining them together.
  
[List of Patents for class 441 subclass 54]    54Encircling flexible member:
 This subclass is indented under subclass 50.  Device wherein the joining means is a pliant member such as a rope or chain and which is passed around a log to join it with other logs.
  
[List of Patents for class 441 subclass 55]    55SWIMMING AID TO INCREASE STROKE EFFICIENCY:
 This subclass is indented under the class definition.  Device secured to or held by a swimmer which increases the effective surface used to propel the swimmer through the water, thereby providing for faster or farther propulsion through the liquid by the user"s swimming strokes.
  
[List of Patents for class 441 subclass 56]    56Hand attached, held, or worn:
 This subclass is indented under subclass 55.  Device which is secured to, grasped by, or borne on the hand of a swimmer.
  
[List of Patents for class 441 subclass 57]    57Having finger stalls (e.g., gloves):
 This subclass is indented under subclass 56.  Device having a chamber into which a finger or the entire hand of the user may be inserted in the manner of a glove or mitt.
  
[List of Patents for class 441 subclass 58]    58Secured to hand by strap:
 This subclass is indented under subclass 56.  Device including bands for securing the device on the user"s hands.
  
[List of Patents for class 441 subclass 59]    59Arm attached:
 This subclass is indented under subclass 55.  Device which is secured to the arm of the swimmer.
  
[List of Patents for class 441 subclass 60]    60Leg attached:
 This subclass is indented under subclass 55.  Devices which is secured to the leg of a swimmer.
  
[List of Patents for class 441 subclass 61]    61Foot attached:
 This subclass is indented under subclass 55.  Device which is secured to the foot of a swimmer.
  
[List of Patents for class 441 subclass 62]    62Repositioned by biasing means:
 This subclass is indented under subclass 61.  Device having means to urge the water-contacting surface to a selected position.
(1) Note. These biasing means keep the surface in an operating position or at selected operating angles.
  
[List of Patents for class 441 subclass 63]    63With lock or latch:
 This subclass is indented under subclass 61.  Device having means to hold or secure the water-contacting surface in a predetermined position.
  
[List of Patents for class 441 subclass 64]    64Flipper:
 This subclass is indented under subclass 61.  Device including a flexible water-contacting surface resembling webbed feet in appearance and operation.
  
[List of Patents for class 441 subclass 65]    65WATER SKIMMING OR WALKING DEVICES:
 This subclass is indented under the class definition.  Device constructed so as to permit walking, gliding, or planing on the surface of a body of water while sustaining a user substantially out of contact with the water.
(1) Note. Movement usually occurs by action of the user or of an external agent.

SEE OR SEARCH CLASS:

114Ships,   subclasses 242+ for devices used in towing vessels for use in water.
  
[List of Patents for class 441 subclass 66]    66Inflatable:
 This subclass is indented under subclass 65.  Device which are expandable when filled with pressurized gas.

SEE OR SEARCH THIS CLASS, SUBCLASS:

30,for an inflatable buoy.
40,for an inflatable raft.

SEE OR SEARCH CLASS:

114Ships,   subclass 345 for inflatable boats.
  
[List of Patents for class 441 subclass 67]    67Circular:
 This subclass is indented under subclass 65.  Device which has a periphery in the shape of a circle.
  
[List of Patents for class 441 subclass 68]    68Water ski:
 This subclass is indented under subclass 65.  Device comprising an elongated boardlike member having a width somewhat greater than a user"s foot and a normally upturned leading edge adapted to support the user while planing across the water surface while under tow.
  
[List of Patents for class 441 subclass 69]    69Ski tow handle:
 This subclass is indented under subclass 68.  Device which is a handle secured to a towing device.
(1) Note. The ski tow handle is usually attached to an elongated flexible member and is adapted to be grasped by the skier.

SEE OR SEARCH CLASS:

114Ships,   subclasses 253+ for towing with a cable.
  
[List of Patents for class 441 subclass 70]    70Ski binding:
 This subclass is indented under subclass 68.  Device including means to secure a ski to the foot of a skier.
  
[List of Patents for class 441 subclass 71]    71With rooster tail producing means:
 This subclass is indented under subclass 68.  Device including an attachment at the rear of a ski to project a stream of water in an arc above the water surface and behind the ski for visual effects.
(1) Note. An example of such a device is a funnel like pipe whose outlet is oriented upwardly.
  
[List of Patents for class 441 subclass 72]    72With seat:
 This subclass is indented under subclass 68.  Devices including means upon which a skier may sit while being towed.
  
[List of Patents for class 441 subclass 73]    73Having connecting means:
 This subclass is indented under subclass 68.  Device wherein means are provided to link together at least two skis.
  
[List of Patents for class 441 subclass 74]    74Surfboard:
 This subclass is indented under subclass 65.  Device comprising an elongated member of a width comparable to the shoulder width of a user adapted to be propelled by a wave and capable of supporting the user.
  
[List of Patents for class 441 subclass 75]    75With lashing:
 This subclass is indented under subclass 74.  Device including a ropelike or cordlike member attached to the surfboard which can also be attached to the user.
  
[List of Patents for class 441 subclass 76]    76Water walking device (e.g., water shoes):
 This subclass is indented under subclass 65.  Device including a buoyant member supporting the user in a standing position and enabling the user to move across the water surface in a walking manner.
  
[List of Patents for class 441 subclass 77]    77Having pivoted traction flap:
 This subclass is indented under subclass 76.  Device wherein an element is provided having a fulcrum point which allows the element to move in and out of a working position in order to increase the traction of the buoyant member.
  
[List of Patents for class 441 subclass 78]    78Spheroid or wheel-like device encircling walker:
 This subclass is indented under subclass 76.  Device wherein the buoyant member is a globe or disclike means which supports, circumscribes, and rotates about the user as it moves across the water surface.
  
[List of Patents for class 441 subclass 79]    79Having stabilizing surface:
 This subclass is indented under subclass 65.  Device including a means, such as a keel, fin, etc. which tend to steady the water skimming or walking device.
  
[List of Patents for class 441 subclass 80]    80WATER RESCUE OR LIFE PROTECTING APPARATUS:
 This subclass is indented under the class definition.  Device adapted to remove a person from the water from a position remote from said person, to protect a person from the elements or hostile marine life, or to sustain a person above the water for an extended time period.
  
[List of Patents for class 441 subclass 81]    81Tossable apertured member (e.g., ring):
 This subclass is indented under subclass 80.  Device comprising a buoyant flotation device adapted to be thrown to a person in the water.
(1) Note. The device is usually secured to a rope.
  
[List of Patents for class 441 subclass 82]    82For use over ice:
 This subclass is indented under subclass 80.  Device specifically adapted for rescuing a person who has fallen through broken ice.
  
[List of Patents for class 441 subclass 83]    83Air-sea rescue device:
 This subclass is indented under subclass 80.  Device wherein means to assist a person in the water is carried by and is capable of being dropped from an aircraft to the person.
  
[List of Patents for class 441 subclass 84]    84Lifeline:
 This subclass is indented under subclass 80.  Device comprising a buoyant elongated pliant member used to rescue a person floating in a body of water.
  
[List of Patents for class 441 subclass 85]    85Having line propelling means:
 This subclass is indented under subclass 84.  Device including apparatus for delivering the elongated buoyant member from a remote location to a person in need of rescue.
  
[List of Patents for class 441 subclass 86]    86Buoyant shark screen encircling user:
 This subclass is indented under subclass 80.  Device wherein a buoyancy means to float the user is combined with a means to surround and hide the user from a shark.
  
[List of Patents for class 441 subclass 87]    87Passenger enclosing buoyancy device:
 This subclass is indented under subclass 80.  Device comprising an apparatus for protecting a user who has been stranded or shipwrecked in the water from the elements until he is rescued, by enclosing him and having sufficient buoyancy to support the user on the water surface.

SEE OR SEARCH THIS CLASS, SUBCLASS:

38,for rafts having a shelter.

SEE OR SEARCH CLASS:

114Ships,   subclass 349 for life boats enclosing passengers.
  
[List of Patents for class 441 subclass 88]    88Personal flotation device:
 This subclass is indented under subclass 80.  Device worn by a user and including buoyancy means to sustain the user floating in a body of water.
(1) Note. Buoyancy compensation vests for divers are classifiable elsewhere. See Search note below.

SEE OR SEARCH CLASS:

405Hydraulic and Earth Engineering,   subclass 186 for buoyancy compensation vests.
  
[List of Patents for class 441 subclass 89]    89With signal means:
 This subclass is indented under subclass 88.  Device including means secured to the personal flotation device for attracting attention.
  
[List of Patents for class 441 subclass 90]    90With mechanical inflation means:
 This subclass is indented under subclass 88.  Device having a chamber adapted to be expanded or enlarged for use from a collapsed state, together with means for causing the expansion.
(1) Note. The means for causing expansion does not include oral expanding means.
  
[List of Patents for class 441 subclass 91]    91By pump:
 This subclass is indented under subclass 90.  Device wherein the means for causing the expansion is a pump.
  
[List of Patents for class 441 subclass 92]    92By compressed gas means:
 This subclass is indented under subclass 90.  Device including a self-contained source of pressurized gas for expanding the chamber.
  
[List of Patents for class 441 subclass 93]    93With puncturing means:
 This subclass is indented under subclass 92.  Device including means for piercing a seal on the pressurized gas source in order to allow the gas to flow into the chamber.
  
[List of Patents for class 441 subclass 94]    94Lever actuated:
 This subclass is indented under subclass 93.  Device including a pivoting bar for actuating the piercing means.
  
[List of Patents for class 441 subclass 95]    95Actuated by water softened or soluble member:
 This subclass is indented under subclass 93.  Device wherein the piercing means is restrained by a water soluble element or an element weakened by contact with water such that upon contact with water the piercing means is released.
  
[List of Patents for class 441 subclass 96]    96With control valve:
 This subclass is indented under subclass 92.  Device including a means located in a flow line communicating the gas source with the chamber to regulate the flow of the pressurized gas from the source.
  
[List of Patents for class 441 subclass 97]    97Actuated by water softened or soluble member:
 This subclass is indented under subclass 96.  Device wherein the regulating means is restrained by a water soluble element or an element weakened by contact with water such that upon contact with water the regulating means can be used.
  
[List of Patents for class 441 subclass 98]    98By gas generation from chemical reaction:
 This subclass is indented under subclass 90.  Device wherein a gas is generated by the reaction of reagents to fill the expandable chamber.
  
[List of Patents for class 441 subclass 99]    99With manually operated valve:
 This subclass is indented under subclass 98.  Device wherein a hand operated valve means is used to adjust or control the flow of at least one of the reactants or of the evolved gas.
  
[List of Patents for class 441 subclass 100]    100With soluble or deformable element:
 This subclass is indented under subclass 98.  Device provided with a means which can be mutilated, destroyed, distorted, or dissolved to initiate or terminate flow of the reactants or the evolved gas.
  
[List of Patents for class 441 subclass 101]    101With cutting, punching, or striking means:
 This subclass is indented under subclass 100.  Device provided with a means to bore or cut a hole in a wall of the deformable means, or to impinge against the wall with a view to plastically deforming the wall, to permit mixing of the reactants.
  
[List of Patents for class 441 subclass 102]    102Body suit:
 This subclass is indented under subclass 88.  Device wherein the buoyancy means is secured to a garment which encloses more than the torso of the user and includes arm, leg, and neck openings.

SEE OR SEARCH CLASS:

2Apparel,   appropriate subclasses for normal articles of wear which do not increase the buoyancy of the user; especially, subclasses 2.15+ for suits worn by divers, per se..
  
[List of Patents for class 441 subclass 103]    103Full length:
 This subclass is indented under subclass 102.  Device wherein the garment covers the arms, legs, and torso of the user.
  
[List of Patents for class 441 subclass 104]    104With hood:
 This subclass is indented under subclass 103.  Device provided with means to substantially cover the user"s head.
  
[List of Patents for class 441 subclass 105]    105With mask:
 This subclass is indented under subclass 104.  Device having in addition means to cover the user"s face.

SEE OR SEARCH CLASS:

128Surgery,   subclasses 200.24+ for respiratory methods and devices not associated with a personal flotation device.
  
[List of Patents for class 441 subclass 106]    106For torso:
 This subclass is indented under subclass 88.  Device worn by the user and which covers a portion of the trunk of the human body.
  
[List of Patents for class 441 subclass 107]    107With sleeve:
 This subclass is indented under subclass 106.  Device wherein the trunk covering means includes a sleeve.
  
[List of Patents for class 441 subclass 108]    108With buoyancy means substantially encircling the torso:
 This subclass is indented under subclass 106.  Device wherein the trunk covering means includes buoyancy means which substantially circumscribes the torso.
  
[List of Patents for class 441 subclass 109]    109And attached hip boot:
 This subclass is indented under subclass 108.  Device including boots secured to the trunk covering means in the vicinity of the user"s hips.
  
[List of Patents for class 441 subclass 110]    110And leg or foot strap:
 This subclass is indented under subclass 108.  Device including a leg or foot strap securing the trunk covering means to a leg or foot.
  
[List of Patents for class 441 subclass 111]    111And support passing over the shoulder:
 This subclass is indented under subclass 108.  Device including means passing over the shoulders for supporting the buoyancy means.
  
[List of Patents for class 441 subclass 112]    112Having buoyancy means:
 This subclass is indented under subclass 111.  Device wherein the supporting means passing over the shoulders include buoyancy means.
  
[List of Patents for class 441 subclass 113]    113Buoyancy means is a continuous member:
 This subclass is indented under subclass 108.  Device wherein the buoyancy means is an uninterrupted member.
  
[List of Patents for class 441 subclass 114]    114With buoyancy means on the back:
 This subclass is indented under subclass 106.  Device wherein the trunk covering means includes buoyancy means for placement on the back of the torso.
  
[List of Patents for class 441 subclass 115]    115And front:
 This subclass is indented under subclass 114.  Device including buoyancy means for placement on the thorax or abdomen of the torso.
  
[List of Patents for class 441 subclass 116]    116And shoulder:
 This subclass is indented under subclass 115.  Device further including buoyancy means for placement over a shoulder of the torso.
  
[List of Patents for class 441 subclass 117]    117With buoyancy means on the front:
 This subclass is indented under subclass 106.  Device wherein the trunk covering means includes buoyancy means for placement on the thorax or abdomen of the torso.
  
[List of Patents for class 441 subclass 118]    118And shoulder:
 This subclass is indented under subclass 117.  Device including buoyancy means for placement over the shoulder of the torso.
  
[List of Patents for class 441 subclass 119]    119With buoyancy means on the side:
 This subclass is indented under subclass 106.  Device wherein the trunk covering means includes buoyancy means for placement on the sides of the torso.
  
[List of Patents for class 441 subclass 120]    120Trunks or shorts:
 This subclass is indented under subclass 88.  Device wherein the personal flotation device is in the form of bathing trunks or shorts.
  
[List of Patents for class 441 subclass 121]    121Suspender:
 This subclass is indented under subclass 88.  Device wherein the buoyancy means are incorporated on over the shoulder pants supports.
  
[List of Patents for class 441 subclass 122]    122Arm encircling means:
 This subclass is indented under subclass 88.  Device wherein the buoyancy means are adapted to be secured to and encircle an arm.
  
[List of Patents for class 441 subclass 123]    123Neck encircling means:
 This subclass is indented under subclass 88.  Device wherein the buoyancy means are adapted to be secured to and encircle the neck.
  
[List of Patents for class 441 subclass 124]    124Head gear:
 This subclass is indented under subclass 88.  Device wherein the buoyancy means are adapted to be worn on the head.
  
[List of Patents for class 441 subclass 125]    125Convertible use article:
 This subclass is indented under subclass 80.  Device wherein the device is designed to perform an entirely different function in normal usage but readily converts to a means for personal flotation.

SEE OR SEARCH CLASS:

190Trunks and Hand-Carried Luggage,   subclass 1 , for an article of luggage convertible to or from a flotation device.
383Flexible Bags,   subclass 3 , for an inflatable flexible bag.
  
[List of Patents for class 441 subclass 126]    126Seating means:
 This subclass is indented under subclass 125.  Device wherein the primary use of the device is for the purpose of sitting.

SEE OR SEARCH CLASS:

297Chairs and Seats,   subclass 4 , 118+, 423.1+, 468+ for seats not particularly adapted to a marine environment.
  
[List of Patents for class 441 subclass 127]    127Cushion:
 This subclass is indented under subclass 126.  Device wherein the sitting device is a soft pad.
  
[List of Patents for class 441 subclass 128]    128Berth:
 This subclass is indented under subclass 125.  Device wherein the primary use of the device is as a bed or mattress.

SEE OR SEARCH CLASS:

5Beds,   subclass 9.1 for berths, per se.
  
[List of Patents for class 441 subclass 129]    129BODY SUPPORTING BUOYANT DEVICE:
 This subclass is indented under the class definition.  Device including buoyancy means and size sufficient for normally supporting only one user on the water surface and subject to either little movement or slow movement across the water surface.
(1) Note. These devices are normally recreational devices.
(2) Note. Devices which comprise buoyant structures and are made to simulate animals, fish, fowl, etc., or any part thereof, are excluded from Class 441 if claimed to recite such simulating features, and will be found in Class 472, Amusement Devices, particularly subclasses 128+. If the buoyant structure only is claimed, classification in Class 441 is proper.
  
[List of Patents for class 441 subclass 130]    130With seat:
 This subclass is indented under subclass 129.  Device provided with an element on which the user may sit.
  
[List of Patents for class 441 subclass 131]    131Annular buoyant member:
 This subclass is indented under subclass 130.  Device wherein the buoyancy means is in the form of a ring.
  
[List of Patents for class 441 subclass 132]    132U-shaped buoyant member:
 This subclass is indented under subclass 130.  Device wherein the buoyancy means is horseshoe shaped.
  
[List of Patents for class 441 subclass 133]    133BUOYANCY PROVIDING ATTACHMENT FOR PIPE, LOG, OR LINE:
 This subclass is indented under the class definition.  Element attached to a conduit, cable, line, or log and providing the same with added buoyancy when in a body of water.
  
[List of Patents for class 441 subclass 134]    134Float or log:
 This subclass is indented under subclass 133.  Device which is fastened to a log so as to increase its buoyancy.
  
[List of Patents for class 441 subclass 135]    135BUOYANT UNDERWATER VIEWING DEVICE:
 This subclass is indented under the class definition.  Device facilitating below the surface observations usually including a buoyant platform and a window located on the platform and below the water surface.
  
[List of Patents for class 441 subclass 136]    136MISCELLANEOUS:
 This subclass is indented under the class definition.  Buoys, rafts, and aquatic devices not specifically provided for elsewhere in the schedule.