Water-tight fitting of a glass in a watch case
AssigneeS.B.B.M. Burdet S.A.
InventorFerjeux Jean Pierre Monnet
Life of this patent
Estimating the term…
Abstract
A watch case includes a middle-bezel having a non-circular upper opening receiving a glass of corresponding non-circular shape. The glass has an outwardly-directed peripheral flange able to pass with a slight play through the upper opening in the middle-bezel, and the middle-bezel has an inwardly-directed collar defining its upper opening. A packing seal is disposed with a part under the collar and a part resting on the flange. A screw-fitted circular back applies pressure to the glass to compress the seal between the collar and flange and thereby hold the glass in the upper opening.
Claims6
A watch case, comprising;
- A middle-bezel having, as an integral part thereof, an inwardly-directed collar defining a non-circular upper opening, the collar having a generally flat lower collar face;
- a watch glass receivable in the non-circular upper opening, being of a corresponding non-circular shape, and having an outwardly-directed peripheral glass flange dimensioned to pass with slight play through the non-circular upper opening in the middle-bezel;
- a packing seal having an outer part disposed under the collar and an inner part on and coextensive with the glass flange;
- and
- means for applying pressure to the glass to compress the seal between the collar and the glass flange,
- whereby the glass can be inserted in the middle-bezel through the upper opening, and can be held in the upper opening by the compressing of the seal.
A watch case, comprising;
- a middle-bezel having, as an integral part thereof, an inwardly-directed collar defining a non-circular upper opening, the collar having a generally flat lower collar face, and the middle-bezel also having smaller, circular, lower opening;
- a watch glass receivable in the non-circular upper opening;
- being of a corresponding non-circular shape, and having an outwardly-directed peripheral glass flange dimensioned to pass with slight play through the non-circular upper opening in the middle-bezel, the flange having a generally flat upper flange face and the glass also having, upwardly extending from the upper flange face, a bevelled, upwardly converging outer glass face;
- a packing seal having an outer part disposed under the collar and an inner part coextensively disposed on the glass flange and having a bevelled, upwardly converging inner face generally conforming to the bevelled, outer glass face;
- and
- means for applying pressure to the glass to upwardly-outwardly compress the seal between the collar and the glass flange and outer glass face,
- whereby the glass can be inserted in the middle-bezel through the upper opening, and can be held in the upper opening by the upward-outward compressing of the seal.
Dependencies are inferred from the claim text.