US PATENT SUBCLASS 210 / 494.1
.~.~ Convolute

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}
483  DF  .~ Supported, shaped or superimposed formed mediums {11}
494.1.~.~ Convolute {2}
494.2  DF  .~.~.~> Metal
494.3  DF  .~.~.~> With edge spacer

DEFINITION

Classification: 210/494.1

Convolute:

(under subclass 483) Apparatus in which the filter medium is arranged so that it is coiled upon itself and recedes or approaches a center axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:

493.4, and 497.1, for pleated spirally formed and helically wound filters, respectively.