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:
Apr. 15, 1986
Filed:
Apr. 25, 1983
Bertel S Nelson, Naperville, IL (US);
Wedgtrac Corporation, Yorkville, IL (US);
Abstract
A speed governing mechanism is provided utilizing plano-centric gearing and centrifugal braking. An outer cylindrical member serves as a cable drum and is rotated by playing out of the cable. A central shaft is fixedly mounted for supporting the assembly. Plano-centric gearing within the outer cylindrical member turns an inner rotary member on the fixed shaft at an increased speed, while a centrifugal brake assembly is fixed on the inner member and has brake shoes that fly outwardly under centrifugal force to bear against an inner cylindrical reaction surface on the outer cylinder, and thereby to limit the speed of rotation of the outer cylinder. Guides are provided coacting with the brake shoes to cause them to move rearwardly relative to the direction of rotation, and thereby to provide a wedging action with the reaction surface.