US PATENT SUBCLASS 137 / 625.48
.~.~ Reciprocating valve unit

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

Internet Version by PATENTEC © 1999      Terms of Use


137 /   HD   FLUID HANDLING

561 R  DF  SYSTEMS {32}
625  DF  .~ Multi-way valve unit {12}
625.48.~.~ Reciprocating valve unit {2}
625.49  DF  .~.~.~> Combined disk or plug and gate or piston
625.5  DF  .~.~.~> Plural disk or plug

DEFINITION

Classification: 137/625.48

(under subclass 625) Devices in which the valve unit moves rectilinearly to and from seats of controlled passages and thereby controls two or more branched flow passages.