Base element for a wristwatch

Details Base element for a wristwatch Base element for a wristwatch

1983-01-13

1987-04-14

Rutledge, L. Dewayne

Horology: time measuring systems or devices

Cases

With support details

368309, G04B 3700

Patent

active

046574085

ABSTRACT:
The invention relates to a base element for a wristwatch in the form of a laminate, which simultaneously serves the purpose of a movement plate or frame and a case back and which consists of two integrally joined plates, these plates being bonded together in particular by means of a foil using ultrasonic heat-sealing. Such a base element may be manufactured with high precision simply and cheaply and has good stability, especially when a circular edge is folded to the inside of one of the plates of the base element for the purpose of reinforcement.

REFERENCES:
patent: 2359719 (1944-10-01), Simpson
patent: 2468053 (1949-04-01), Fix et al.
patent: 2685164 (1954-08-01), Grillet et al.
patent: 3990227 (1976-11-01), Matsuura
patent: 4264969 (1981-04-01), Walker et al.
patent: 4421423 (1983-12-01), Lederrey
patent: 4496246 (1985-01-01), Ota et al.
patent: 4534660 (1985-08-01), Laesser
patent: 4603978 (1986-08-01), Brenk

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