Fluid-tight watchcase and improved ring gasket for the same

Details Fluid-tight watchcase and improved ring gasket for the same Fluid-tight watchcase and improved ring gasket for the same

Filed on

1973-12-14

Date issued

1977-01-25

Examiner

Miller, Jr., George H.

Other Related Categories

G04B 3708

Type

Patent

Status

active

Patent number

040044106

Description

ABSTRACT:
A waterproof watchcase having an improved tight gasket for effecting a watertight seal with a watch crystal or bezel and a watchcase. The improved gasket comprises an inner ring gasket made of elastic, deformable material for effecting a seal without adhesive and an auxiliary ring comprising an outer ring of a rigid material circumferentially of the inner ring for limiting the deformation outwardly of the inner ring. The outer ring is of lesser thickness than the inner ring. The inner ring has oppositely disposed surfaces which define the thickness dimension thereof and effect the sealing. The auxiliary ring may be a split ring in which case the elastic, deformable ring is clamped and held between the two rigid rings. The gasket rings all conform to the cross-section configuration of the watchcase and may be non-circular, rectangular or ellipsoidal and other shapes.

REFERENCES:
patent: 2708338 (1955-05-01), Pfisterer

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