Pushpiece mechanism for a timepiece

Details Pushpiece mechanism for a timepiece Pushpiece mechanism for a timepiece

1987-04-01

1989-04-04

Recla, Henry J.

Electricity: circuit makers and breakers

Electric switch details

Actuators

200431, 368187, 74110, H01H 312, G04C 900

Patent

active

048188301

ABSTRACT:
The pushpiece mechanism for a timepiece comprises pushpiece return means arranged so that the force applied to the pushpiece passes through a maximum at an intermediate position thereof between a rest position and the pushed-in position of the pushpiece.
To this end the return means are provided with two bearing elements arranged to cooperate with one another and comprising respectively a beak and a heel coupled by an elastic member, such bearing elements and elastic member being formed as a single piece.
The mechanism may be applied in particular to electronic timepieces including a chronograph function.

REFERENCES:
patent: 3157770 (1964-11-01), Beaulieu
patent: 3243562 (1966-03-01), O'Brien
patent: 3489874 (1970-01-01), Baumann
patent: 3628824 (1969-08-01), Leuw
patent: 4035596 (1977-07-01), Marquardt
patent: 4451719 (1984-05-01), Lauterburg

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