Control of a lobed rotor machine
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United States of America Patent
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-
Jan 23, 2001
Grant Date -
N/A
app pub date -
Jul 28, 1999
filing date -
Feb 5, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotary device has a first rotor having a recess and a second rotor counter-rotatable to the first rotor and having a radial lobe. A housing in which the rotors are enclosed has a first arcuate recess, an edge of the recess of the first rotor forming a sliding seal with the first arcuate recess during a portion of the rotation of the first rotor. The housing has a second arcuate recess, the lobe of the second rotor forming a sliding seal with the second arcuate recess during a portion of the rotation of the first rotor. Thus, for a portion of the rotation of the rotors, there is defined between the first and second rotors and the arcuate recesses of the housing a transient chamber of volume which progressively decreases on rotation of the rotors. The maximum volume of the transient chamber can be varied.
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