US PATENT SUBCLASS 92 / 127
.~ Fluid pressure type

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

126  DF  WITH DIFFERENTIAL RADIAL THRUST PRODUCING MEANS FOR WORKING MEMBER {1}
127.~ Fluid pressure type

DEFINITION

Classification: 92/127

(under subclass 126) Apparatus in which said force exerting means comprises a fluid under pressure, and means are provided to direct or conduct said pressure fluid between a side wall portion of the working member and the adjacent wall of the working chamber containing said working member.