Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michio Kitahara0
Paul Patterson0
Date of Patent
August 3, 2010
Patent Application Number
10510417
Date Filed
April 8, 2003
Patent Primary Examiner
Patent abstract
To provide an efficient piston pump having a small number of parts and simple assembly steps, and consuming less current in achieving a relatively low ultimate pressure. The piston pump comprises: a suction port (28) through which gas sucked by varying the volume of a pump chamber (22) defined by a cylinder (12) and a piston (14) fitted in the cylinder (12) passes as the piston (14) is reciprocated, an exhaust port (20) through which the gas discharged by varying the volume of the pump chamber (22) passes, a suction valve (26) installed in the suction port (28) disposed on a piston top, and an exhaust valve (18) installed in the exhaust port (20) disposed on a top of the cylinder (12).
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