US PATENT SUBCLASS 92 / 6 D
.~ With diaphragm

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

6 R  DF  EFFECTIVE AREA OF WORKING MEMBER END FACE SELECTIVELY VARIABLE {1}
6 D.~ With diaphragm

Unofficial Alpha Subclasses: R D

DEFINITION

Classification: 92/6

(under the class definition) Apparatus in which the expansible chamber device is provided with means whereby the area of the working member end face which is acted upon by the working fluid or which acts upon the working fluid during movement of the working member may be selectively changed.