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:
Oct. 18, 1988
Filed:
Feb. 27, 1987
Aisin Seiki Kabushiki Kaisha, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A hydraulic pump assembly includes a cam shaft, a pair of high pressure plunger pumps opposed to each other on a first common axis, each of the high pressure plunger pumps having a first plunger of small diameter perpendicular to the cam shaft for reciprocation by engagement therewith, a low pressure plunger pump arranged on a second axis angularly displaced with respect to the first common axis in a circumferential direction of the cam shaft, the low pressure plunger pump having a second plunger of large diameter perpendicular to the cam shaft for reciprocation by engagement therewith, an accumulator arranged to temporarily store hydraulic fluid under pressure discharged from the low pressure plunger pump, and a relief valve arranged to release an excessive hydraulic pressure from the accumulator for maintaining the hydraulic pressure in the accumulator in a predetermined value. The high pressure plunger pumps are arranged to be supplied with the hydraulic fluid under pressure from the accumulator.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile