US PATENT SUBCLASS 417 / 214
.~ Having means to hold or resist movement of pumping element

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

Internet Version by PATENTEC © 1999      Terms of Use


417 /   HD   PUMPS

212  DF  CONDITION RESPONSIVE CONTROL OF DRIVE TRANSMISSION OR PUMP DISPLACEMENT {7}
214.~ Having means to hold or resist movement of pumping element

DEFINITION

Classification: 417/214

(under subclass 212) Apparatus in which the control means comprises a positive lock, friction brake, fluid retarder or similar device which will act to prevent or restrict movement of the pumping member by acting directly thereon or on a part directly connected thereto.