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. 15, 1987
Filed:
Apr. 23, 1986
Pierre Grunberg, Paris, FR;
Valeo, Paris, FR;
Abstract
In a method of automatically operating a clutch release bearing to re-engage a friction clutch adapted to transmit between first and second shafts a torque conditioned by the action of the release bearing on a clutch release device associated with the clutch, the clutch release bearing has a predetermined total travel. This extends between a clutch released position in which no torque is transmitted between the shafts and a clutch engaged position in which the shafts are coupled together in rotation. The clutch release bearing is moved according to speed modes selected from a plurality of predetermined speed modes according to the rotation speeds of the first and second shafts or the gear ratio. During a first phase the clutch release bearing is moved in accordance with a first or fast speed modes over at least a predetermined approach travel. Beyond this the changing difference between the rotation speeds of the two shafts is monitored. When a decrease in this difference is detected, a second or slow speed mode is substituted for the first speed mode.