EP 0240778 B1 19891129 - PUSH BUTTON MECHANISM FOR A TIME PIECE
Title (en)
PUSH BUTTON MECHANISM FOR A TIME PIECE
Publication
Application
Priority
CH 138986 A 19860409
Abstract (en)
[origin: US4818830A] 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.
IPC 1-7
IPC 8 full level
G04G 21/00 (2010.01); G04B 3/04 (2006.01); G04B 27/00 (2006.01); G04C 3/00 (2006.01); G04C 9/08 (2006.01); G04G 99/00 (2010.01); H01H 5/04 (2006.01)
CPC (source: EP US)
G04B 3/048 (2013.01 - EP US); G04C 3/001 (2013.01 - EP US); H01H 5/04 (2013.01 - EP US); H01H 2300/016 (2013.01 - EP US); Y10T 74/18992 (2015.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0240778 A1 19871014; EP 0240778 B1 19891129; CH 664863G A3 19880415; DE 3761062 D1 19900104; HK 2095 A 19950113; JP H0636039 B2 19940511; JP S62245181 A 19871026; US 4818830 A 19890404
DOCDB simple family (application)
EP 87103803 A 19870316; CH 138986 A 19860409; DE 3761062 T 19870316; HK 2095 A 19950105; JP 8312187 A 19870406; US 3280287 A 19870401