US PATENT SUBCLASS 123 / 48 R
ADJUSTABLE COMBUSTION CHAMBER

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

48 RADJUSTABLE COMBUSTION CHAMBER {5}
48 A  DF  .~> Piston in head adjusted manually or mechanically
48 AA  DF  .~> Piston in head adjusted
48 B  DF  .~> Piston varied by means in crankshaft, connecting rod or piston
48 C  DF  .~> Cylinder or sleeve-moved
48 D  DF  .~> Auxiliary chamber

Unofficial Alpha Subclasses: R A AA B C D

DEFINITION

Classification: 123/48

Internal-combustion engines having a cylinder and a working piston reciprocating therein, but irrespective of other structural features, cycle, or mode of operation, in which means are provided whereby the volume of the clearance-space or combustion-chamber may be varied or adjusted either manually or automatically as by a suitable governing device, to thereby insure a proper degree of compression of the combustible charge before ignition thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

311+, for internal-combustion engines in which the volume of the clearance-space is varied in unison with the exhaust-stroke, such action being a definite step in each cycle of operation of the engine.