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:
Jul. 13, 1999
Filed:
Mar. 28, 1997
Hideaki Higashimura, Itami, JP;
Takato Ohgaki, Itami, JP;
Youichi Miyawaki, Itami, JP;
Koichi Hashida, Itami, JP;
Takamitu Ishihara, Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A brake fluid pressure control device which is simple in structure and inexpensive, which has the functions as both an antilock controller and a traction controller, and which is capable of automatically increasing braking pressure with pumps while the driver is treading the brake pedal. Shutoff valves serving as fluid sources for pumps are provided in a fluid circulation type antilock control device. When the brake pedal is treaden, the shutoff valves close under the master cylinder pressure. While the shutoff valves are closed, no fluid can be supplied to the pump. But in this state, changeover valves open, so that fluid can be supplied from the master cylinder to the pumps through the changeover valves. Check valves are further provided to prevent the fluid supplied to the pumps from flowing into dumped fluid reservoirs.