US PATENT SUBCLASS 60 / 632
ONE SHOT EXPLOSION ACTUATED EXPANSIBLE CHAMBER TYPE MOTOR

Current as of: June, 1999
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60 /   HD   POWER PLANTS

632ONE SHOT EXPLOSION ACTUATED EXPANSIBLE CHAMBER TYPE MOTOR {6}
633  DF  .~> Having means for feeding fluid fuel
634  DF  .~> Having plural charge holding means
635  DF  .~> Having mechanical means securing working member in fired position
636  DF  .~> Having latch, rupture or safety means resisting movement of working member or firing means from unfired position
637  DF  .~> Having orifice or conduit restricting flow of combustion products from combustion zone to motor chamber
638  DF  .~> Having shock absorbing, damping or slow down means for working member

DEFINITION

Classification: 60/632

(under the class definition) Noncyclic motor in which pressure fluid resulting from an explosion of a fuel charge within or in direct communication with the working chamber of an expansible chamber type motor during the explosion produces a single power stroke of the output member of the motor.

(1) Note. To be considered a motor under this definition, the member moved by the explosion produced pressure fluid must, at least by disclosure, remain after being so moved, as a part of the motor. Devices in which the member moved by the pressure fluid is ejected or projected from the rest of the device, so as to become detached therefrom are not

included as motors under this definition. (See such classes as Class 42, Firearms, and Class 89, Ordnance).

(2) Note. To be considered in direct communication with the motor working chamber, the explosion must occur within an enclosed space or chamber having, at the instant of explosion, an open fluid flow path to the motor working chamber so that the explosion produced pressure fluid may act immediately on the motor working member. The fluid flow path between explosion chamber and motor working chamber may include a transfer valve, providing such valve is opened at the instant of explosion or prior thereto.

(3) Note. Motors under this definition are limited to motors of the type specified, alone, or in combination with their pressure fluid producing means, which are incapable of causing a repetition of the pressure fluid producing explosion, or cyclic operation of the motor, without an intervening operation of some part of the motor or some part of the pressure fluid producing means by a nonperiodic force which is neither produced nor controlled by the explosion or by operation of the motor. Such motors or combinations may include means for holding plural fuel charges and/or means to place the motor and/or fluid producing means in condition for a subsequent operation.

(4) Note. Power plants of more comprehensive nature than specified in (3) Note above, and which include as a subcombination thereof a motor of the type included under this definition, will be classified in other appropriate subclasses of this class on the basis of the features of the more comprehensive power plant.

(5) Note. Combinations in which explosive actuated motors of the type included under this definition act as the power means for operating particular art devices are classified with the various art devices, if any significant features of the art device are claimed. Generally, a load device for the motor, claimed by name only, will not exclude a patent from classification under this definition. SEE OR SEARCH THIS CLASS, SUBCLASS:

253, for a reaction motor driven by a charge of solid propellant, subclass 39.47, for a motor using combustion products from a solid charge or motive fluid; and subclass 415, for a pressure accumulator energized by a gas pump or external gas supply.

SEE OR SEARCH CLASS

29, Metal Working,

254+, for explosion operated pullers or pushers in assembling or disassembling apparatus.

42, Firearms, appropriate subclass for a device in which the

member moved by the pressure fluid is projected so as to become detached therefrom.

89, Ordnance,

1.51+, for a device for discharging a bomb, plane, or signal device from an aircraft; and subclass 1.818, for a rocket launcher using an auxiliary rocket launching charge.

102, Ammunition and Explosives,

530+, for blank cartridges for generating a gas.

123, Internal-Combustion Engines, 24, for a cycling engine using an explosive solid substance; and subclass 183, for a starting device for an internal combustion engine in which gases resulting from a gum powder explosion act upon the working piston of the apparatus to provide a starting force for the engine.

149, Explosive and Thermic Compositions or Charges, appropriate subclass for explosive compositions, per se.

166, Wells,

63, and the search there noted for explosive devices in wells.

175, Boring or Penetrating the Earth,

2+, for devices or methods of boring by below ground explosions and including a device for firing a bullet or exploding a shaped charge in an inaccessible bore to penetrate the earth formation or to perforate or cut a tubular casing or other wall member in the bore.

227, Elongated-Member-Driving Apparatus,

8, and 9+, for apparatus for driving a member, e.g., stud, by fluid pressure generated by an explosion.