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. 16, 1991
Filed:
Mar. 30, 1990
Erkki Koivunen, Livonia, MI (US);
Other;
Abstract
An automatic change speed transmission with a multi-mode friction device which is torque sensitive to operatively hold transmission gearing for reaction in a drive direction and automatically self releases in the manner of a one way or free-wheeler clutch on torque reversals to provide inherent smooth shifting between the ratios. This clutch can also be fully locked to provide engine braking in coast operation. In the released mode, the multi-mode clutch is fully released in both drive and coast direction. With this multi-mode clutch the transmission length can be foreshortened significantly and existing transmissions can be readily and economically converted from conventional friction element shifts to free-wheeler type shifts. This multi-mode clutch can also be used to selectively couple and release two rotatable members.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile