Plastic watch case
AssigneeCitizen Watch Co., Ltd.
InventorsKoichi Nakajima, Hidetaka Tsuchiya
Life of this patent
Estimating the term…
Abstract
A glass mounting structure for watches comprises a watch case made of plastic having an opening for the glass. A flange member made of metal plate is embedded in the watch case surrounding the opening. The flange has an inside flange portion which laterally extends into the opening for supporting the glass.
Claims6
A glass mounting structure for watches comprising a watch case made of plastic, said watch case having an opening, a flange member made of metal plate embedded in a portion of said watch case surrounding said opening, said flange member comprising an axially extending annular wall portion embedded in said watch case along an inside wall of said opening and an inside flange portion which is laterally projected into said opening, a packing engaged in the inside wall of said opening and a glass engaged on an inner side of said packing and supported by said flange portion.
A plastic watch case comprising:
- a plastic back member including outwardly projecting side walls defining a cavity adapted to receive a watch module, said side walls terminating to define a continuous shoulder portion;
- a plastic case member including an enlarged open portion and a plurality of additional openings, said plastic case member being adapted to mate with said shoulder portion of said plastic back member to provide a closure thereto;
- a flange member made of metal plate being embedded in a portion of said plastic case member surrounding said enlarged open portion, said flange member comprising an axially extending annular wall portion embedded in said case member along an inside wall of said enlarged open portion and an inside flange portion laterally projecting into said opening;
- a packing engaged in the inside wall of said enlarged open portion;
- and
- a glass member engaged on an inner side of said packing and being supported by said flange portion.
Dependencies are inferred from the claim text.