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:
Dec. 29, 1987
Filed:
Sep. 17, 1986
Yoshiyuki Hattori, Toyoake, JP;
Kazuma Matsui, Toyohashi, JP;
Yuichi Imani, Hamamatsu, JP;
Akira Kuno, Obu, JP;
Tetsuya Nagata, Konan, JP;
Koji Nakane, Anjo, JP;
Ken Nomura, Okazaki, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A brake oil pressure control device including a main line system for a normal braking operation, and a subline system for antiskid control and acceleration slip control. The main line system connects a master cylinder to a wheel cylinder, and has a first valve which opens the main line for a normal braking operation, and closes the main line when an antiskid control or acceleration slip control is in effect. The subline system has an oil pump connected to the wheel cylinder through a subline having a second valve, which is controlled to open and close the subline for the antiskid control or acceleration slip control. Inlet and outlet ports are connected by a relief pipe having a third valve and a relief valve. The relief valve opens the relief pipe under pressure from the master cylinder when a discharge pressure from the oil pump is higher than the pressure at the master cylinder, to restrain the discharge pressure from the oil pump. The third valve opens the relief pipe for an antiskid control, and closes the relief pipe for an acceleration slip control.