Patent · US Active

Backlash-compensating gear train for horological mechanism

US8042423B2 · kind B2 · utility

10Cited by

4References

9Claims

0Family size

Assignee

ROLEX SA · CH

Inventors

Sebastien Bannier · Sonvilier, CH
David Passannante · Fribourg, CH
Nicolas Bonvin · Vernier, CH

Key dates

Filing date	Apr 15, 2009
Grant date	Oct 25, 2011
Priority date	—
Expiry date	Oct 5, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19967
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

At least some of the uniformly distributed teeth of one of the antibacklash partner toothed wheel units, of this backlash-compensating gear train for a horological mechanism, have elastic parts (DR) that are flexible in the direction of the respective thicknesses of the teeth. Some of the teeth are capable of temporarily transmitting a torque considerably greater than the normal drive torque. Two adjacent teeth (D1, D2) capable of temporarily transmitting a torque considerably greater than the normal drive torque each comprise one flank (D1a, D2a) integral with a more rigid part (D12), and one flank (D1b, D2b) integral with a more flexible part (D1R, D2R), the two more rigid parts (D12) of the two teeth (D1, D2) being adjacent.

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