US PATENT SUBCLASS 29 / 888.022
.~.~.~ Scroll or peristaltic type


Current as of: June, 1999
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29 /   HD   METAL WORKING

592  DF  METHOD OF MECHANICAL MANUFACTURE {54}
888  DF  .~ Prime mover or fluid pump making {12}
888.02  DF  .~.~ Fluid pump or compressor making {5}
888.022.~.~.~ Scroll or peristaltic type


DEFINITION

Classification: 29/888.022

Scroll or peristaltic type:

(under subclass 888.02) Process wherein the manufactured fluid pump or compressor (1) employs in its operation at least one diaphragm member which is spirally wrapped, the walls of which define a closed space that serves as the working fluid chamber; (2) employs in its operation a resilient tubing that is compressed, which tubing serves as the working fluid chamber; or (3) a part especially adapted for (1) or (2) which is not elsewhere classified.

(1) Note. A method of making a scroll member or a peristaltic tubing is classified in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

888.3, for a process of making a seal or packing member.