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:
Aug. 18, 1981
Filed:
Sep. 10, 1979
Edo Boer, Eersel, NL;
Sybrand W Vogt, Mierlo, NL;
Volvo Car B.V., Mc Helmond, NL;
Abstract
In known V-belt automatic variable power transmissions the change in the gear ratio as a function of angular velocity or the number of revolutions at full throttle at high loads is a compromise between the desired performance of the vehicle and fuel consumption, emission, noise nuisance considerations. The invention obolishes this compromise by making the gear ratio constant in a determined region or range of angular velocities around the original change gear ratio and number of revolutions relationship. In a preferred embodiment this is achieved by the shape of the cam surfaces of the centrifugal weights which surfaces are almost straight over a determined portion thereof.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile