US PATENT SUBCLASS 418 / 87
.~ Valve regulated non-working fluid

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


418 /   HD   ROTARY EXPANSIBLE CHAMBER DEVICES

83  DF  HEAT EXCHANGE OR NON-WORKING FLUID LUBRICATING OR SEALING {13}
87.~ Valve regulated non-working fluid

DEFINITION

Classification: 418/87

(under subclass 83) Apparatus in which the flow of nonworking fluid to the relatively moving surfaces may be varied by the adjustment of a movable flow restrictive means in the path of flow.