US PATENT SUBCLASS 210 / 418
.~ With flow controller for material being treated

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

Internet Version by PATENTEC © 1999      Terms of Use


210 /   HD   LIQUID PURIFICATION OR SEPARATION

348  DF  FILTER {25}
418.~ With flow controller for material being treated {5}
419  DF  .~.~> Attached to or within portable prefilt receiver
420  DF  .~.~> Selective directive flow relative to filter {4}
428  DF  .~.~> Combining or dividing flow passages with filter in combined passage
429  DF  .~.~> Filter coaxial with valve seat or valve stem {2}
432  DF  .~.~> Filter in valve body recess

DEFINITION

Classification: 210/418

(under subclass 348) Apparatus with a variable flow controller for the material being treated, or a constituent thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

97+, for flow, fluid pressure or material level responsive means.

138+, for a separator with time control means.

141+, for a separator with a program actuator.

143+, for automatic control of a separator.

302, for a filter and a constituent trap with a flow line valve. 313, for a filter, a constituent trap and valve controlled sediment discharge means.

340, for parallel similar filters with flow control means.

371, for a variable flow controller for residue in a centrifugal extractor.

390, for a movable medium mounted on a movable valve element.

SEE OR SEARCH CLASS

137, Fluid Handling,

544+, for a flow controller combined with a gas separator.

138, Pipes and Tubular Conduits,

41, for a restrictor and a screen.

166, Wells,

205, for a well screen with a valve or changeable restrictor.