Antitripping device for watch-escapement

Details Antitripping device for watch-escapement Antitripping device for watch-escapement

2006-07-04

2006-07-04

Miska, Vit W. (Department: 2841)

Horology: time measuring systems or devices

Escapements

With oscillating or reciprocating means

C368S175000

Reexamination Certificate

active

07070321

ABSTRACT:
The anti-trip device is for a detent escapement mounted on a wristwatch. It includes a finger fixed to the arm of the balance, two columns between which the finger can pass, said columns being secured to the balance bridge, and a locking arm fixed to the outer coil of the balance spring, said locking arm being able to be inserted between said columns and said finger to prevent the balance from rotating beyond an angle exceeding its normal operating angle. The locking arm is a clamp hooked onto the outer coil of the balance spring.

REFERENCES:
patent: 361850 (1887-04-01), Van Strait
patent: 3934403 (1976-01-01), Tilse
patent: 3943701 (1976-03-01), Poix
patent: 3958410 (1976-05-01), Bell
patent: 5907524 (1999-05-01), Marmy et al.
patent: 6431746 (2002-08-01), Jujo et al.
patent: 225 624 (1963-01-01), None
patent: 1 206 811 (1965-12-01), None
European Search Report issued in corresponding European Patent Application No. 04 02 3667 completed May 18, 2005.

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