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:
Mar. 23, 1982
Filed:
Feb. 06, 1980
Junichi Takahashi, Katsuta, JP;
Takanori Shibata, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The control circuit comprises a memory circuit and a calculation circuit. The control circuit derives wheel speed from a detector, and delivers a brake release signal and a braking signal to a hydraulic brake system of a vehicle after the occurrence of a skid. A memory circuit beforehand memorizes optimum control patterns shown by the function of time and vehicle velocity corresponding to slip rate between wheel and road surfaces. A calculation circuit determines a slip rate by referring to wheel speed, and selects an optimum control pattern corresponding to the calculated slip rate from the memory circuit. Then, the calculation circuit controls the hydraulic brake system in accordance with the selected optimum pattern. When the slip rate becomes 50% after the panic braking, the calculation circuit releases the oil pressure of the hydraulic brake system and, when the slip rate becomes 20% after the panic braking, the calculation circuit outputs the braking signal to the hyraulic brake system.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile