US PATENT SUBCLASS 418 / 55.5
.~.~ With biasing means, e.g., axial or radial

Current as of: June, 1999
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418 /   HD   ROTARY EXPANSIBLE CHAMBER DEVICES

54  DF  WORKING MEMBER HAS PLANETARY OR PLANETATING MOVEMENT {6}
55.1  DF  .~ Helical working member, e.g., scroll {5}
55.5.~.~ With biasing means, e.g., axial or radial

DEFINITION

Classification: 418/55.5

With biasing means, e.g., axial or radial:

(under subclass 55.1) Apparatus in which a means is provided to keep the scrolls in sealing engagement.