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:
Sep. 25, 1984
Filed:
Mar. 01, 1982
Atsushi Ohmi, Anjyo, JP;
Aisin Seiki Kabushiki Kaisha, Kariya City, JP;
Abstract
Brake power multiplying devices for automobile brake systems include a housing having a pressure responsive flexible diaphragm for dividing the inside chamber of the housing into a suction pressure chamber and a counter-pressure chamber. A piston made of a plastic material is attached to the diaphragm and houses an air valve and a control valve which are adapted to be actuated by a push rod operated by a driver of the automobile through a brake pedal or like operating member. A key member made of a metallic material is provided for holding the air valve on the piston. The key member includes a pair of outer holding arms having tip ends attached with rubber members so that it does not damage the plastic piston.