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:
Jun. 29, 1976
Filed:
Mar. 12, 1975
Edward S Orzel, Cleveland, OH (US);
Richard G Thrush, North Olmstead, OH (US);
The Weatherhead Company, Cleveland, OH (US);
Abstract
The disclosed motor vehicle hydraulic brake system includes a master cylinder supplying fluid pressure to a front brake circuit and to a rear brake circuit. The rear brake circuit includes a proportioning valve which reduces the pressure supplied to the rear wheel brakes. The rear brake circuit also includes a control circuit. In the event of front and rear braking pressures exceeding predetermined pressure levels, the control circuit modifies the operation of the proportioning valve so that the proportional relationship of the proportioning valve closely approximates a 0.4g deceleration line until the theoretically ideal front to rear pressure relationship for the particular loading condition of the vehicle at the 0.4g deceleration rate is reached. The proportioning valve then closely approximates the theoretically ideal front to rear pressure relationship for the particular loading condition of the vehicle at all higher braking pressures and higher deceleration rates.