Backlash-compensating toothed moving part, gear assembly and use of this gear assembly
AssigneeRolex SA
InventorJérôme Daout
Life of this patent
Estimating the term…
Abstract
The invention relates to a backlash-compensating toothed moving part, for a precision gear assembly, particularly in clock-making, in which the backlash-compensating teeth each have a section extending symmetrically to both sides of the radius of said mobile passing the tip of said teeth with an elastic connection to said mobile to give said teeth a freedom of movement in the plane of the mobile, at least one tooth in two being a backlash-compensating tooth comprising stop means (6, 7; 8a, 8b, 9a, 9b; 14; 17a; 18a; 29; 31a, 34; 31b, 35; 40) arranged to limit the freedom of movement as a function of the backlash in the gear assembly to be compensated for.
Claims9
A backlash-compensating moving part for a precision gear assembly, particularly of a timepiece, in which backlash-compensating teeth each have at least one portion which extends symmetrically on either side of the radius of said moving part passing through the tip of said teeth and which is connected elastically to said moving part so as to provide said teeth with a freedom of movement in the plane of this moving part, characterized in that at least one tooth in two is a backlash-compensating tooth, and in that these backlash-compensating teeth have stop means (6, 7;
- 8a, 8b, 9a, 9b;
- 14;
- 17a;
- 18a;
- 29;
- 31a, 34;
- 31b, 35;
- 40) arranged so as to limit the amplitude of said freedom of movement as a function of the engagement backlash to be compensated for.
A gear assembly for a precision mechanism, characterized in that the teeth (42) of one (41) of the mating moving parts of said gear assembly each have a slot (43) shaped so as to impart a substantially higher degree of elasticity to one of the contact faces (42a) of these teeth than to their other contact face.
Dependencies are inferred from the claim text.