Reduced vibration cooling device having pneumatically-driven GM type displacer
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United States of America Patent
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Jul 10, 2001
Grant Date -
N/A
app pub date -
Feb 15, 2000
filing date -
Feb 15, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A GM type displacer has an elastomer 'O' ring at the warm end to absorb impact energy when the displacer reaches the bottom of the stroke before it would hit the cylinder end cap. When the displacer reaches the top of its stroke, before the displacer would hit the internal mechanism of the expander, another elastomer 'O' ring absorbs the kinetic energy of the displacer. Both absorbers are at or near ambient temperature.
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