Clockwork movement comprising a guiding tube between a plate and

Details Clockwork movement comprising a guiding tube between a plate and Clockwork movement comprising a guiding tube between a plate and

1997-06-16

1999-03-30

Roskoski, Bernard

Horology: time measuring systems or devices

Display trains

368318, 368322, G04B 1902

Patent

active

058897380

ABSTRACT:
The invention concerns a clockwork movement comprising a lower plate (1) situated on the side of the dial (19), a bridge (2), an upper plate (3) and a rotary shaft (10) which passes through a guiding tube (15) mounted in the bridge (2) and the lower plate (1).
The tube (15) has two opposite shoulders (21, 26) which abut respectively against the bridge and the plate to maintain a determined gap between the latter. Three tubes of this type are preferably provided, corresponding to three shafts (10) which may be shafts of chronograph counter hands. At least one of the tubes (15) has an external bearing surface (22) which assures the positioning of a printed circuit board (24).
The invention applies to any type of watch, in particular to chronograph watches.

REFERENCES:
patent: 4125994 (1978-11-01), Nakagawa et al.
patent: 4378957 (1983-04-01), Malkin et al.

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