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:
Jul. 25, 1989
Filed:
Sep. 22, 1987
Daniel Lagier, Nanterre, FR;
Jean-Pierre Auffray, Andeville, FR;
Jaeger, Levallois-Perret, FR;
Abstract
A transmission ring assembly adapted to be mounted between the steering column and the steering wheel an automobile vehicle provides an electrical connection between a control switch mounted on the steering wheel and a device controlled by the switch. It comprises a bush fixed to the steering column and a first series of conductive rings fastened to the bush. A base member is mechanically attached to the steering wheel and a second series of conductive rings fastened to the base member cooperate electrically with the rings of the first series. Each pair of contacts formed by respective rings from the first and second series is insulated from an adjacent pair of contacts. Each ring of the first or second series comprises two concentric annuli electrically and mechanically joined at at least two points on a common diameter. In this way the connection and drive/retention functions of each ring are made separate from its electrical contact function.