US Patent 7527338 Hydrodynamic retarder control apparatus
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Patent Inventor Names
Bradley L. McCafferty0
Charles F. Long0
Mark A. Rader0
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Patent abstract
A hydrodynamic retarder control apparatus includes two valve spools, one, a retarder control valve, functions as a relay valve to control the on/off operation of a hydrodynamic retarder and the other, a regulator valve, functions to control the regulation of pressure at the hydrodynamic retarder. During abnormal periods of operation of the regulator valve, the retarder control valve will also function as a pressure control valve thereby limiting the maximum pressure at the hydrodynamic retarder.
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US Patent 07527338 Hydrodynamic retarder control apparatus US Patent 7527338 Hydrodynamic retarder control apparatus
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Patent Number
075273380
Patent Number
75273380
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Patent Jurisdiction
Patent Number
075273380
Date of Patent
May 5, 2009
0Patent Application Number
112189810
Date Filed
September 2, 2005
0Official Website
Patent Primary Examiner
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US Patent 07527338 Hydrodynamic retarder control apparatus
Infobox
Is a
Patent jurisdiction
Patent number
07527338
Date of patent
May 5, 2009
Patent application number
11218981
Date Filed
September 2, 2005
Patent primary examiner
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