Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michael Griffiths0
Date of Patent
October 7, 2008
0Patent Application Number
109634240
Date Filed
October 12, 2004
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A method of monitoring the health of a positive displacement hydraulic pump comprising the steps of:establishing a flow path having a known flow number between a high pressure outlet line of the pump (and a low pressure line of the system;progressively changing the speed of operation of the pump; and,noting the speed of operation of the pump at a parameter responsive to the output pressure of the pump changes in response to said change in rotational speed of the pump.
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