US PATENT SUBCLASS 188 / 283.1
.~.~ Vortex flow passages


Current as of: June, 1999
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188 /   HD   BRAKES

266  DF  INTERNAL-RESISTANCE MOTION RETARDER {29}
283  DF  .~ Piston having a restrictable opening (e.g., apertured plate) in a fixed volume chamber {1}
283.1.~.~ Vortex flow passages


DEFINITION

Classification: 188/283.1

Vortex flow passages:

(under subclass 283) Piston restrictable opening in which the element is designed to create an outward rotating effect to damp.