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. 26, 2002
Filed:
Dec. 20, 1999
Applicant:
Inventors:
Isao Matsuno, Nagano, JP;
Joichi Nakano, Nagano, JP;
Assignee:
Nissin Kogyo Co., Ltd., Nagano, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60T 8/44 ;
U.S. Cl.
CPC ...
B60T 8/44 ;
Abstract
A hydraulic brake booster includes a primary master cylinder M , a hydraulic power source , a fluid tank and proportional booster valves Vf, Vr for boosting an output hydraulic pressure from the primary master cylinder M proportionally so as to supply the hydraulic pressure so boosted to wheel brakes Bfa, Bfb, Bra, Brb, the proportional booster valves being constructed as a spool type proportional booster valve.