US PATENT SUBCLASS 222 / 394
.~ Fluid pressure

Current as of: June, 1999
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222 /   HD   DISPENSING

251  DF  WITH DISCHARGE ASSISTANT (E.G., IMPELLER, PUMP, CONVEYER, MOVABLE TRAP CHAMBER, ETC.) {30}
394.~ Fluid pressure {9}
395  DF  .~.~> Liquid pressure
396  DF  .~.~> With pressure limiting means
397  DF  .~.~> With pressure fluid relieving means
398  DF  .~.~> Telescopic container and/or outlet
399  DF  .~.~> With gas pressure supplying reservoir
400.5  DF  .~.~> Simultaneously operative material discharge valve and pump or pulsator operating member
400.7  DF  .~.~> Unitary mounting for fluid pressure inlet and material outlet {1}
401  DF  .~.~> Container-mounted fluid pressure generating pump or pulsator {1}
402.1  DF  .~.~> Valve actuated by nozzle or through valve outlet {13}

DEFINITION

Classification: 222/394

(under subclass 251) Dispensers in which the material is caused to discharge from the container by fluids under pressure that directly contact the material to be dispensed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

3+, for gas or vapor dispensers.

51, for float level indicators.

61+, for automatic control of fluid pressure discharge type of dispenser.

64+, for material level controls.

95, for fluid pressures used to collapse the walls of receptacles. 152, for inert atmosphere providing means where the gas pressure does not operate to cause material discharge.

195, for gas agitation.

204, for siphons combined with discharge assistants.

206, for resilient wall dispensers.

258, 261, 262, and 263, where there is a second discharge assistant.

320+, where the gas pump piston rod is also the nozzle.

323+, for gas pumps located in the supply container handle.

333+, for motors including those operated by pressure fluids.

373, where fluids are applied to the material in a casing to cause discharge, the casing receiving material from a supply by gravity.

386.5, for fluid pressure operated, nonrigid followers.

389, for followers that are fluid pressure operated.

630+, for fluid flow discharge. SEE OR SEARCH CLASS

60, Power Plants,

39.48, for combustion products power plants with fluid pressure feeding of oxidizer, fuel or water.

137, Fluid Handling,

206+, for fluid handling systems having gas displacement means as gas storage over liquid in a pressure system.

141, Fluent Material Handling, With Receiver or Receiver Coacting Means,

19, for dispensers having a cutter or punch to open a gas pressure cell to deliver gas under pressure to the dispenser's container to force out the contents material.

169, Fire Extinguishers,

9, and 71+

184, Lubrication, the subclasses indented under "Fluid operated" starting with

49,. 221, Article Dispensing,

278, for article dispensing devices having fluid pressure discharge assisting means.

239, Fluid Sprinkling, Spraying, and Diffusing,

22, 364+, 372, and 373 for spraying apparatus in which the discharge of one fluid is caused at least in part by the pressure of another fluid in contact therewith.

261, Gas and Liquid Contact Apparatus, for dispensers of the gas pressure discharge assistant type claimed in combination with means to secure an intimate contact between and/or a mixing of the gaseous medium and the fluid to be dispensed.

291, Track Sanders,

3, 16, 18 for sanders operating by fluid pressure or fluid flow.

401, Coating Implements With Material Supply,

184+, wherein the implement includes a reservoir for the material and means to vary the pressure of the contained gas (usually air) so as to vary the pressure on the material to force the material into the reservoir or from the reservoir to the applying tool.

406, Conveyors: Fluid Current,

146,. 516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,

1+, for continuous gas or vapor phase colloid system (e.g., smoke, fog, aerosol, cloud, mist) or agents for such systems or making or stabilizing such systems or agents, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

604, Surgery,

140+, for material impelled by pressurized charge or gas.