Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 24, 2012
Patent Application Number
12084045
Date Filed
October 19, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
A liquid pump is provided in which pulsations can be properly absorbed even if the pump is driven at a high frequency. A pulsation absorbing unit for absorbing pulsation includes a pulsation absorbing housing disposed on a pump housing member, a second diaphragm attached to the pulsation absorbing housing member and defining a pulsation absorbing chamber communicating with a liquid outlet passage of a liquid pump unit, and a disc spring for biasing the second diaphragm toward the pulsation absorbing chamber.
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