The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 1991
Filed:
May. 23, 1989
Mizuo Otaki, Kanagawa, JP;
Atsugi Motor Parts Company, Limited, Kanagawa, JP;
Abstract
A plunger pump including a plurality of plunger chambers, each slidably accommodating a plunger associated with a rotatable cam shaft having an eccentric cam for pressurizing fluid within said plunger chamber, comprises an essentially cylindrical casing with the plunger chamber and a partition wall dividing an internal space defined within the casing into a low-pressure chamber communicaitng through a fluid passage formed in type plunger with the plunger chamber and a high-pressure for receiving the pressurized fluid from the plunger chamber. The casing and the partition wall are integrally formed. The casing has a circular opening through which the shaft is inserted into the low-pressure chamber and another circular opening which is sealingly closed by a lid having high-rigidity. The casing also has an inlet port through which fluid is introduced into the low-pressure chamber and an outlet port through which the pressurized fluid is discharged from the high-pressure chamber.