US PATENT SUBCLASS 92 / 88
SEALED OPENING IN LONGITUDINAL WALL OF CHAMBER FOR RECEIVING WORKING MEMBER PORTION


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

88SEALED OPENING IN LONGITUDINAL WALL OF CHAMBER FOR RECEIVING WORKING MEMBER PORTION


DEFINITION

Classification: 92/88

(under the class definition) Apparatus comprising an elongated chamber for receiving a reciprocating working member, the longitudinal wall of said chamber being provided with an elongated opening extending between the ends of the chamber through which a portion of the working member is adapted to protrude and means cooperating with said chamber wall adjacent the opening to seal the opening adjacent said protruding portion.