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. 14, 1982
Filed:
Mar. 04, 1980
Yoshihiro Hayashida, Chigasaki, JP;
Tokico Ltd., Kanagawa, JP;
Abstract
A master cylinder for a vehicular brake includes a cylinder closed at one end and open at the other end, a sleeve slidably received within the cylinder, a piston assembly including a pair of pistons integrally connected together, a stop on the cylinder for confining the piston assembly within the cylinder, and a spring disposed between the sleeve and piston assembly for normally biasing one end of the sleeve against the closed end of the cylinder and the piston assembly against the stop. One of the pistons and the closed end of the cylinder define a first pressure chamber therebetween and the pistons define a second pressure chamber therebetween. In operation, the sleeve is moved towards one of the pistons in response to a difference in the amount of remaining oil between the two pressure chambers against the force of the spring.