Object capped by a protective layer

Details Object capped by a protective layer Object capped by a protective layer

1990-08-27

1991-07-02

Miska, Vit W.

Horology: time measuring systems or devices

Cases

Of particular material

428632, G04B 3700, C03C 2702

Patent

active

050291491

ABSTRACT:
An object, which is particularly destined for use in horology or jewelry, includes a substrate which constitutes the framework and which is preferably formed from injected cast aluminium. A decorative and protective coating overlays the substrate, such coating consisting of a deposit of a first layer of aluminium in a substantially pure state and a second layer capping the first, said second layer being constituted of aluminium oxide formed from the first layer. The object may be a watch case or a bracelet link.

REFERENCES:
patent: Re28527 (1975-08-01), Kushida
patent: 4375391 (1983-03-01), Kushida
patent: 4419409 (1983-12-01), Kushida
patent: 4640625 (1987-02-01), Kushida
Horological Journal, No. 111, Aug. 1968, pp. 22-24.

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