US PATENT SUBCLASS 417 / 540
.~ Having pulsation dampening fluid receiving space

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

437  DF  EXPANSIBLE CHAMBER TYPE {40}
540.~ Having pulsation dampening fluid receiving space {3}
541  DF  .~.~> Space formed on pumping member
542  DF  .~.~> Inlet and discharge spaces
543  DF  .~.~> Direct contact with confined compressible fluid {1}

DEFINITION

Classification: 417/540

(under subclass 437) Apparatus comprising a fluid receiving or confining means positioned in open communication with the pump fluid either upstream of the means to control the flow of fluid into the chamber or downstream of the means to control the flow of fluid from the chamber to absorb pulsations initiated in said fluid incident to an operation of the pump.

SEE OR SEARCH CLASS

138, Pipes and Tubular Conduits,

26+, for pressure compensators, per se.