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:
Jan. 12, 1988
Filed:
Apr. 02, 1987
Yuzuru Sugiura, Anjo, JP;
Akihiko Miwa, Toyota, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A tandem brake booster which includes a housing, front and rear movable walls positioned in the housing, a partition wall interposed between the front and rear movable walls and a valve mechanism provided in the rear movable wall for generating pressure difference between first and second constant pressure chambers and first and second variable pressure chambers. A key is inserted within a case member of the housing and serves to prevent excess movement of the case in an axial direction by blocking rotation of such case.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile