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:
Nov. 06, 2001
Filed:
Sep. 30, 1999
Applicant:
Inventors:
Kaoru Tsubouchi, Toyota, JP;
Akihiko Miwa, Anjo, JP;
Assignee:
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T 1/362 ;
U.S. Cl.
CPC ...
B60T 1/362 ;
Abstract
A vacuum servo unit or booster for a vehicle brake system includes a housing, movable walls disposed in the housing, a power piston, an input member, an atmospheric pressure valve seat, a negative pressure valve seat, a control valve having an atmospheric pressure seal portion and a negative pressure seal portion, an output rod, a reaction disc, and an actuator. The vacuum servo booster is designed so that the force produced from the output rod varies with the driving force of the actuator upon activation of the actuator.