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:
Mar. 07, 1995
Filed:
Oct. 01, 1993
Yukio Hosoya, Shizuoka, JP;
Kei Fukuyo, Shizuoka, JP;
Nisshinbo Industries, Inc., Tokyo, JP;
Abstract
A hydraulic pump including a housing having a housing bore with a piston sliding in an axial direction in the bore and a pump chamber being defined in cavity adjacent one end of the piston. A piston drive mechanism is provided in a housing chamber defined in the bore adjacent the other end of the piston. Piston return springs are mounted in the pump chamber biasing the piston towards the piston drive mechanism. An inlet valve is arranged in the pump chamber opening and closing an axial bore in the piston connected to an inlet passage. An outlet valve is set on a downstream side of the pump chamber opening and closing an outlet passage. Two elastic seal members are mounted around a circumference of the piston respectively sealing an area between the pump chamber and the inlet passage and an area between the inlet passage and the housing chamber.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile