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:
Jan. 18, 1994
Filed:
May. 20, 1991
Alphonse Bron, Bassecourt, CH;
ETA S.A. Fabriques d'Ebauches, Granges, CH;
Abstract
A gear mechanism for use in horology is described. The gear mechanism not only returns one of the wheels therein to its original position but also carries along with it a second wheel thereby enabling the mechanism to be made thinner and reducing the number of parts needed to carry out these two functions. The mechanism has a first wheel and a second wheel, the first wheel constituting a toothed wheel fitted on an axis on which is fixed a heart-shaped cam, the point of this cam functioning as the gear engaging means for the second wheel, the cam enabling return of the said first wheel to its starting position by means of a hammer. The invention is of particular value in chronographs.