US PATENT SUBCLASS 418 / 49
NUTATING WORKING MEMBER

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

49NUTATING WORKING MEMBER {3}
50  DF  .~> Non-metallic working member or working chamber portion
51  DF  .~> With mechanical sealing
52  DF  .~> Working member common to plural working chambers {1}

DEFINITION

Classification: 418/49

(under the class definition) Apparatus in which the working member includes a working chamber forming surface having cyclic wobbling or undulating motion and having progressively moving line contact with a complementary working chamber forming surface of another member to thereby produce a rotating working chamber, the central axis of the working member describing a cone whose apex is the point about which the working member wobbles.