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:
Feb. 03, 2004
Filed:
Aug. 03, 2000
Edmond Capt, Le Brassus, CH;
Alain Zaugg, Le Brassus, CH;
Frederic Piguet S.A., Le Brassus, CH;
Abstract
The present invention concerns a power reserve indicator device ( ) for a manually or automatically wound timepiece, said timepiece including a barrel, a mainspring housed in the barrel and time display elements mechanically coupled to said barrel, said indictor device ( ) including a differential gear ( ) a first input ( ) of which is driven by a winding gear train ( ) which meshes with a first driving gear formed by the barrel core, the output ( ) of said differential gear ( ) driving a display gear train ( ) for indicating the reserve of power assured by the number of winding turns of the mainspring, characterised in that the second input ( ) of the differential gear ( ) is driven by a letting down gear train ( ) which meshes with a second driving gear formed by the outer toothing of said barrel or by a wheel and pinion driven by said barrel.