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US Patent RE40257 Compressor pulse width modulation

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Patent abstractTimelineTable: Further ResourcesReferences
Is a
Patent
Patent

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
RE40257
Patent Inventor Names
Mark Bass2
Roy J. Doepker2
Jeffrey A. Huddleston2
James F. Fogt2
Date of Patent
April 22, 2008
Patent Application Number
10675907
Date Filed
September 29, 2003
Patent Citations Received
‌
US Patent 11965507 Compressor and valve assembly
3
‌
US Patent 11754072 Compressor having capacity modulation assembly
‌
US Patent 11879460 Compressor modulation system with multi-way valve
4
Patent Primary Examiner
‌
Charles G Freay
Patent abstract

A scroll compressor includes a capacity modulation system. The capacity modulation system has a piston that is connected to the non-orbiting scroll that disengages the non-orbiting scroll from the orbiting scroll when a pressure chamber is placed in communication with the suction chamber of the compressor. The non-orbiting scroll member moves into engagement with the orbiting scroll when the chamber is placed in communication with the discharge chamber. The engagement between the two scrolls is broken when the pressure chamber is placed in communication with fluid from the suction chamber. A solenoid valve controls the communication between the pressure chamber and the suction chamber. By operating the valve in a pulsed width modulated mode, the capacity of the compressor can be infinitely varied between zero and one hundred percent.

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