US PATENT SUBCLASS 92 / 12.2
.~ Parallel cylinders

Current as of: June, 1999
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92 /   HD   EXPANSIBLE CHAMBER DEVICES

12.1  DF  DISPLACEMENT CONTROL OF PLURAL CYLINDERS ARRANGED IN PARALLEL, RADIAL, OR CONICAL RELATIONSHIP WITH ROTARY TRANSMISSION AXIS {10}
12.2.~ Parallel cylinders {1}
13  DF  .~.~> WITH ADJUSTABLE MEANS TO VARY STROKE OF WORKING MEMBER

DEFINITION

Classification: 92/12.2

(under subclass 12.1) Apparatus in which the longitudinal axes of said plural cylinders are parallel to and spaced from said axis of rotation.

(1) Note. This definition is not intended to include displacement control in response to a sensed condition (e.g., speed or motive fluid condition responsive).

SEE OR SEARCH CLASS

91, Motors: Expansible Chamber Type,

473, for expansible chamber type motors having three or more cylinders arranged in parallel, radial, or conical relationship with a rotary transmission axis in which means are provided for controlling the drive transmission of the motor in response to a sensed condition and subclasses 504+ for expansible chamber type motors having three or more cylinders arranged in parallel relationship with a rotary transmission axis and means for varying the relative reciprocatory stroke between the motor cylinders and pistons.

417, Pumps, 222.1+, for means for controlling an adjustable axial pump operating cam in the pump drive transmission in response to a sensed condition.