US PATENT SUBCLASS 91 / 497
.~.~ Stroke control

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}
491  DF  .~ Radially disposed cylinders {6}
497.~.~ Stroke control

DEFINITION

Classification: 91/497

(under subclass 491) Apparatus in which there is provided means to selectively vary the length of the reciprocating stroke between said cylinders and their respective relatively reciprocating pistons.

SEE OR SEARCH CLASS

92, Expansible Chamber Devices,

12.1, for displacement control of plural cylinders arranged in radial relationship with a rotary transmission axis in which there is no valving of motive fluid claimed.

417, Pumps,

221+, for condition responsive adjustments of a radial pump

operating cam.