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. 27, 1999
Filed:
May. 02, 1997
Gerhard Meier-Burkamp, Bergrheinfeld, DE;
Fichtel & Sachs AG, Schweinfurt, DE;
Abstract
A switchable ratchet freewheel, under load, for multiple-gear hubs on bicycles includes a bolted pawl, a drive, a switch bush, as well as a switch ring. The switch ring, which has a positive-fit connection to the pawl, can either be lifted by a bulge on the switch bush, which acts in concert with an incline on a switch nose, provided that a small or no turning moment is conveyed, or by recesses with end faces and timing edges, which act in concert with a run-up incline on the recesses, whereby the recess enters into a short positive-fit connection with the segment of the switch nose that faces radially inward, provided that higher turning moments are present. In case the pawl is not lifted immediately, by means of the bulge acting in concert with the incline, this results in the positive fit of the recess with the switch nose, which reliably disengages the pawl bond when the run-up incline acts in concert with the timing edge.