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. 30, 1990
Filed:
Sep. 28, 1988
Takashi Nagashima, Koda, JP;
Eiji Miura, Kariya, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A proportioning valve is interposed between a master cylinder and rear wheel cylinders and includes a housing within which are accommodated a piston with a valve head, an opposed valve seat thereby and a spring urging the piston to thereby remove the valve head from the valve seat. The valve head and the valve seat cooperate to open and close the fluid circuit between the master cylinder and the rear wheel cylinder to reduce the hydraulic pressure when the hydraulic pressure delivered from the master cylinder exceeds a set value. In order to supply hydraulic pressure from the master cylinder to the rear wheel cylinders when fluid leakage or the like occurs at the front wheel side, a sleeve enclosing the spring in the housing is brought into engagement with the piston to prevent engagement of the valve head and the valve seat.