US PATENT SUBCLASS 137 / 544
WITH MEANS FOR SEPARATING SOLID MATERIAL FROM THE FLUID

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

544WITH MEANS FOR SEPARATING SOLID MATERIAL FROM THE FLUID {5}
545  DF  .~> Plural separating elements
546  DF  .~> Sediment chamber
547  DF  .~> Movable strainer
549  DF  .~> Hollow strainer, fluid inlet and outlet perpendicular to each other
550  DF  .~> Planar strainer normal to flow path

DEFINITION

Classification: 137/544

(under the class definition) Apparatus having means for separating one or more materials from a fluid mixture either by providing a physical barrier to the passage of particles over a given size or by providing a trap where heavier material may be deposited.

(1) Note. Means for separating solid material from fluid in pressure fluid valve actuating means or in servo-motor supply lines are excluded from this subclass. Patents which include such separating means in pressure fluid valve actuation or servo-motor operating systems are classified on the basis of those other features, for which classification has been provided, but cross referenced here when useful disclosures are present.

SEE OR SEARCH THIS CLASS, SUBCLASS:

140, for siphons with strainers, filters, separators or sediment traps.

237+, for distribution systems having positively acting cleaning means.

583+, for distribution systems with cleanout openings. SEE OR SEARCH CLASS

138, Pipes and Tubular Conduits, appropriate subclasses for screens in pipes and conduits, especially

41, for restrictors combined with screens.

210, Liquid Purification or Separation,

418+, for means to filter a liquid combined with a flow controller for the material being treated and see the search notes thereunder.

222, Dispensing,

189.06+, for dispensers combined with screens, strainers and foraminous guards.

399, Electrophotography,

237+, for liquid developer applied to a latent image within an electrophotos:graphic device.