US PATENT SUBCLASS 124 / 56
FLUID PRESSURE

Current as of: June, 1999
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124 /   HD   MECHANICAL GUNS AND PROJECTORS

56FLUID PRESSURE {9}
57  DF  .~> Self-contained in projectile or projectile-carrying cartridge
58  DF  .~> Adapter for coverting projector force or projectile
59  DF  .~> Having common supply to plural projector barrels
60  DF  .~> Provided by surge of pressure into evacuated projector barrel
61  DF  .~> Applied to intermediate projectile-engaging member
62  DF  .~> Provided by user's mouth or lungs
63  DF  .~> Provided by movement of user-actuated, projector-mounted pressure member {2}
70  DF  .~> With check valve permitting recharge, and control valve for discharge, of fluid pressure
71  DF  .~> With control for discharge of fluid pressure {2}

DEFINITION

Classification: 124/56

(under the class definition) Apparatus wherein an object or missile is propelled or impelled by energy applied thereto, which energy is exerted by way of a force tending to compress or expand the volume of a liquid or a gaseous material.

(1) Note. As used in this and the subclasses indented hereunder (and also in those subclasses of this Classification Order which refer to this Note for a discussion of the terms), the terms "propel" and "impel", have the following meanings and connotations. Both terms have a similar meaning of causing an object to move rapidly by exerting a force thereon. However, PROPEL has the connotation of exerting a sustained force on the object, whereas IMPEL has the connotation of exerting an impulse of force thereon.

(2) Note. The pressurized fluid generated by the force described in the definition is usually a gas, such as air. The force defined may be that which compresses or tends to compress the fluid at the moment of use, or that which compresses the fluid for storage and subsequent use when the user of the apparatus causes a projectile to be launched. The source of pressurized fluid may also be a cartridge containing gas under pressure, in which instance the force is that exerted by the expansion of the gas from a punctured cartridge.

SEE OR SEARCH CLASS

89, Ordnance,

7, for guns, in which the pressure of a gas is used to expel the projectile, in which the pressure is created by the explosion of a charge of vapor or other explosive mixture.

114, Ships, 238+, for pneumatic devices for launching self-propelled marine torpedoes.

227, Elongated-Member-Driving Apparatus,

9+, for a member, e.g., stud, driving device using an explosive force.

251, Valves and Valve Actuation, appropriate subclases for specific valve structure.