Patent · US Expired

Driving device for mechanical timepiece movements

US3974639A · kind A · utility

7Cited by
3References
6Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 23, 1975
Grant dateAug 17, 1976
Priority date—
Expiry dateSep 23, 1995

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG04B1/16
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

This invention relates to a driving device for mechanical timepiece movements, the device comprising a barrel-drum, a barrel-bridge, an arbor coaxial with the drum and pivoting in the bridge, a toothed ratchet-wheel secured to the arbor and disposed adjacent to the bridge, and a one-piece click comprising a rigid portion rotatable about the arbor between a locking position and an unlocking position, a resilient arm, and a beak disposed at a free end of the arm, the beak being adapted for engagement in the toothing of the ratchet-wheel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.