Title:
CONTROLLER FOR REDUCING EXCESSIVE AMPLITUDE OF OSCILLATION OF FREE PISTON
Document Type and Number:
WIPO Patent Application WO2004094860
Kind Code:
A3
Abstract:
An apparatus for detecting and reducing excessive amplitude of oscillation of a free piston slidably mounted in a housing. The housing has a vibration absorber, including a mass mounted through a spring to the housing. The mass reciprocates relative to the housing along a path in a phase relationship to the piston. A sensor is mounted near the mass for detecting the amplitude of oscillation of the mass. A controller is connected to the sensor for reducing the amplitude of oscillation of the piston when the amplitude of oscillation of the mass reaches a predetermined maximum.
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Inventors:
WOOD JAMES GARY
Application Number:
PCT/US2004/007174
Publication Date:
January 27, 2005
Filing Date:
March 10, 2004
Export Citation:
Assignee:
SUNPOWER INC (US)
International Classes:
F02B77/00; F02B77/11; F16F7/10; F16F7/116; F16F9/00; F16F13/00; F16F15/03; F16M5/00; F16F; (IPC1-7): F16F15/03
Foreign References:
| US6094912A | 2000-08-01 | |||
| US6247310B1 | 2001-06-19 | |||
| US6050092A | 2000-04-18 | |||
| US5385021A | 1995-01-31 | |||
| US5647217A | 1997-07-15 | |||
| US4400941A | 1983-08-30 |
Other References:
See also references of EP 1608889A4
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