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, 1993
Filed:
Jun. 17, 1991
Robert Muller, Monsheim, DE;
Dr. Ing. h.c.F. Porsche AG, , DE;
Abstract
An arrangement for the operating of clutches of an all-wheel transmission line has two hydraulically operated clutches inserted in the transmission line of a motor vehicle. The first clutch is used as the separating clutch to a first vehicle axle; the second clutch is used as a locking clutch for the blocking of a lock system by which the second vehicle axle can be connected as a function of the rotational speed. The separating clutch can be closed against the force of a diaphragm spring by a first hydraulic piston with a second hydraulic piston, which is concentric with respect to the first hydraulic piston, the locking clutch can be opened against the force of a diaphragm spring.