Continuous waterproof timepiece case with integral case back bla

Details Continuous waterproof timepiece case with integral case back bla Continuous waterproof timepiece case with integral case back bla

1993-07-23

1994-07-26

Miska, Vit W.

Horology: time measuring systems or devices

Cases

368294, 368309, G04B 3700

Patent

active

053331230

ABSTRACT:
A water-resistant timepiece of the type including a crystal, a timepiece dial and movement assembly, and a long-life energy cell, which comprises a continuous case of plastic having: a first outer peripheral member adapted to receive said dial and movement assembly and the long-life energy cell, and further adapted to receive the crystal to form a water-resistant seal therewith; a thin substantially flat case back wall integral with the peripheral member to form an annular edge; and a peripheral groove located in the bottom of the peripheral member. A case back blank of substantially uniform thickness, having a substantially flat central portion and an integral peripheral side wall, and preferably made of stainless steel, cooperates with the peripheral groove of the case to integrally attach the case back blank to the case to complete a thin timepiece having improved water resistance, high mechanical and structural integrity, and an aesthetic appearance.

REFERENCES:
patent: 3789605 (1984-02-01), Kisaida
patent: 4136515 (1979-01-01), Thompson et al.
patent: 4188778 (1980-02-01), Wuthrich
patent: 4291402 (1981-09-01), Nakajima et al.
patent: 4397567 (1983-08-01), Carl
patent: 4403870 (1983-09-01), Thompson et al.
patent: 4421423 (1983-12-01), Lederrey
patent: 4511260 (1985-07-01), Pasquier
patent: 4561783 (1985-12-01), Lederrey
patent: 4648722 (1987-03-01), Mock et al.
patent: 4668101 (1987-03-01), Wuthrich
patent: 5244134 (1993-09-01), Riley

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