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. 03, 1985
Filed:
Nov. 25, 1983
Bertel S Nelson, Naperville, IL (US);
Wedgtrac Corporation, Yorkville, IL (US);
Abstract
A roller-type drive is provided having three rollers, one of which is a wedging roller which produces a tighter wedging action for all three rollers in response to increasing torque. A cross-pin is provided in the stud or axle about which the wedging roller turns, and this cross-pin is biased by a spring-pressed axial pin having a tapered nose received in a tapered notch in the cross-pin such that the cross-pin initially urges the wedging roller into wedging position. The cross-pin subsequently follows the wedging roller as it moves further into wedging position, but eventually is stopped by the axial pin, and thereafter limits further movement of the wedging roller into wedging position, thereby limiting the torque that can be transmitted by the roller-type drive.