Timepiece construction with a caseback removable using a credit

Details Timepiece construction with a caseback removable using a credit Timepiece construction with a caseback removable using a credit

1980-11-06

1983-08-09

Roskoski, Bernard

Horology: time measuring systems or devices

Cases

With front or back details

368292, G04B 3700

Patent

active

043975674

ABSTRACT:
A timepiece construction is disclosed in which a back cover member can be unsnapped from a case by using a credit card as a lever. Typically, the back cover member includes a slanted lip along one side and the timepiece case includes a pair of attachment lugs adjacent the lip, each lug having a first slanted wall spaced from the cover member lip to define slots to receive one end of the credit card and further each lug having a second slanted wall intersecting the first wall to define fulcrums for contacting the credit card intermediate its ends. One end of the credit card is inserted in the slots and force is applied to the other end to pivot the credit card about the fulcrums to lift the lip of the back cover member and thereby unsnap it from the case.

REFERENCES:
patent: 2830434 (1958-04-01), Trautz
patent: 2875574 (1959-03-01), Dinstman
patent: 3264820 (1966-08-01), Piquerez
patent: 3643424 (1972-02-01), Simon
patent: 3783604 (1974-01-01), Florent et al.
patent: 3940922 (1976-03-01), Miyasaka et al.

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