US PATENT SUBCLASS 188 / 322.22
.~ Thrust member or piston structure

Current as of: June, 1999
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188 /   HD   BRAKES

266  DF  INTERNAL-RESISTANCE MOTION RETARDER {29}
322.22.~ Thrust member or piston structure

DEFINITION

Classification: 188/322.22

Thrust member structure:

(under subclass 266) Device wherein significance is attributed to a design or construction feature of a first member that is moved in or through the fluid contained by the device.

(1) Note. The thrust member is not limited to a certain configuration, it may be, for example, either a piston or a movable diaphragm.