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. 20, 1981
Filed:
Oct. 10, 1978
Hiroyuki Kondo, Anjo, JP;
Hiroshi Takeshita, Chiryu, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A fluid brake pressure control system having a hydraulic pressure control valve device controlling the wheel cylinder hydraulic pressure by the inertia in response to the vehicle deceleration with such device being located in a circuit between a master cylinder and wheel cylinders. The device includes a housing member provided thereon with an inlet port to be connected with the master cylinder and an outlet port to be connected with the wheel cylinders, the housing member being provided therein with a first chamber to be directly connected with the inlet port and a second chamber to be directly connected with the outlet port, an inertia member located in the second chamber, the inertia member being operable by inertia in response to vehicle deceleration, a cut off valve mechanism located in the first chamber, the cut off valve mechanism cutting off the hydraulic brake pressure by the inertia member, a piston member having a small diameter portion opposing the inertia member and a large diameter portion receiving the master cylinder brake pressure, the piston member being moveable to contact with the inertia member by the differential effective pressure between the small diameter portion and the large diameter portion so as to keep open the cut off valve mechanism when the hydraulic brake pressure from the master cylinder exceeds a predetermined value.