US PATENT SUBCLASS 92 / 13.8
.~ Adjustment means includes external axially extending threaded piston stem

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}
13.8.~ Adjustment means includes external axially extending threaded piston stem

DEFINITION

Classification: 92/13.8

(under subclass 13) Apparatus in which there is provided an element carried by piston type working member which extends axially therefrom to a location exterior of the working chamber (e.g., piston rod), the portion of said element exterior of said working chamber being provided with screw threads for threadably engaging the means which is positionable or moved and held for changing the extent of working member movement.