Reciprocating axial displacement device
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United States of America Patent
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Nov 27, 2007
Grant Date -
Mar 16, 2006
app pub date -
Sep 13, 2004
filing date -
Sep 13, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A reciprocating axial displacement mechanism is disclosed generally comprising a housing, a rotating device, a displacement device having first and second undulating surfaces disposed in the housing, and a cam connected to the rotating device and disposed between the first and second undulating surfaces. The cam either has an undulating shape or has first and second undulating surfaces such that, as the cam rotates with the rotating device, the cam slides along the first and second undulating surfaces of the displacement device to cause the displacement device to move back and forth along the longitudinal axis of the rotating device. In certain embodiments, the displacement device is a pumping device, or an actuator for a pumping device, in a compressor.
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