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:
Nov. 22, 1983
Filed:
Feb. 05, 1981
Ernst Braun, Essen-Heisingen, DE;
Gert Braun, Essen-Heisingen, DE;
Halbach & Braun, , DE;
Abstract
A planar drive mechanism comprises a sprocket wheel for a planar chain and a drive shaft for rotating the sprocket wheel. The sprocket wheel has a secondary rim portion for driving the chain and the drive shaft has a primary rim. A clutch mechanism is connected between the primary and secondary rims which comprises a circular groove of trapazoidal cross section formed in the secondary rim which receives a plurality of friction segments connected to the primary rim. Each friction segment is carried by a coupling bolt which is slidably mounted in radially extending bores in the primary rim aligned with the circular groove. The coupling bolts and friction heads while functioning as a unit can be made of two separate materials, the coupling bolt made of material to give it strength and the friction segments made of material to give it wear resistance.