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. 06, 1988
Filed:
Sep. 24, 1987
David K Mienko, Clawson, MI (US);
John G Vander Poorte, St. Clair Shores, MI (US);
Keith V Leigh-Monstevens, Troy, MI (US);
Automotive Products, plc, Warwickshire, GB;
Abstract
A hydraulic apparatus for remotely controlling the operative mode selector of a motor vehicle automatic transmission. The apparatus comprises a master cylinder having an input member operatively connected to the transmission operative mode selection or shift lever placed at the disposal of the motor vehicle operator, and a slave cylinder mounted on or proximate the transmission casing and having an output member connected to the transmission operative mode selector, the master cylinder and the slave cylinder being placed in fluid communication through flexible conduits such that each displacement of the master cylinder piston as a result of displacement of the master cylinder input member causes a corresponding displacement of the slave cylinder piston coupled to the slave cylinder output member. The master cylinder is provided with a built-in reservoir of hydraulic fluid connected to the working chambers, one on each side of the master cylinder piston, by valved passageways permitting flow of fluid from the reservoir to the low pressure chamber and closing the high pressure chamber from the reservoir so as to compensate for slow changes in hydraulic fluid volume due to expansion and contraction. The master cylinder and the slave cylinder are pivotably and adjustably mounted to a stationary support bracket by a ball and socket arrangement having an eccentric mounting aperture.