US PATENT SUBCLASS 91 / 505
.~.~.~ By varying reaction plate inclination relative to cylinder axes

Current as of: June, 1999
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91 /   HD   MOTORS: EXPANSIBLE CHAMBER TYPE

472  DF  THREE OR MORE CYLINDERS ARRANGED IN PARALLEL RADIAL OR CONICAL RELATIONSHIP WITH ROTARY TRANSMISSION AXIS {10}
499  DF  .~ Cylinders parallel to rotation axis {6}
504  DF  .~.~ Stroke control {1}
505.~.~.~ By varying reaction plate inclination relative to cylinder axes {1}
506  DF  .~.~.~.~> Motor operated

DEFINITION

Classification: 91/505

(under subclass 504) Apparatus in which the plural cylinders or pistons coact with a common drive transmission element (e.g., swashplate) for converting relative reciprocatory movement of said cylinders and pistons to or from rotary motion of said cylinders or said transmission element, said transmission element, being selectively angularly adjustable relative to said parallel cylinder axes for varying the reciprocatory stroke length between said cylinders and pistons.

SEE OR SEARCH CLASS

417, Pumps,

222.1+, for condition responsive adjustment of an axial pump operating cam wherein a cam may be tilted relative to the drive shaft axis.