US Patent 7163096 Double clutch drive with position maintaining function

Patent 7163096 was granted and assigned to BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT on January, 2007 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7163096

Date of Patent

January 16, 2007

Patent Application Number

10920212

Date Filed

August 18, 2004

Patent Primary Examiner

‌

Rodney H. Bonck

Patent abstract

A double clutch drive has a first and a second clutch, wherein for normal operation for the closing and opening of the first clutch a first hydraulic device governed by an electronic control is provided, and for the closing and opening of the second clutch a second hydraulic device is provided. Also, a position-holding hydraulic device is provided to which position signals are delivered corresponding to the momentary position of the first and second clutch, and which is connected via hydraulic control lines with the first and second hydraulic device, while in the event of a failure of the electronic control the position-holding hydraulic device hydraulically operates the first and the second hydraulic control such that, at least in many positions of the clutches, the clutch positions that are present immediately prior to the failure of the electronic control are sustained.