Shin-etsu Polymer Co., Ltd.

Sony Corporation

Hitoshi Uchiyama

Katsuhiko Kato

Hideto Taneyama

Tsunenari Saito

Tsutomu Suehiro

Takahito Inukai

A member for a push button switch that has a small thickness, high durability, and excellent click feeling and can be manufactured at low cost. The member for the push button switch includes one or more key tops, a metal sheet including at least holes that correspond to positions of the key tops, and an elastic sheet that is provided on the metal sheet so as to be positioned on the same side as or opposite side to the key tops. The elastic sheet is fitted into the holes and comes in contact with the key tops at positions of the holes. The elastic sheet includes a urethane film or polycarbonate, and a silicone rubber, which are laminated in a thickness direction of the metal sheet.

Method of manufacturing a member for a push button switch

Member for push button switch and method of manufacturing the same

To obtain a member for a push button switch having a natural metallic impression and an upscale impression; enabling a precise arrangement of the push buttons; being capable of being made thinner; and being difficult to get stained, there is provided a member for a push button switch having a configuration in which a gap between adjacent metal push buttons is filled with a transparent organic polymer material, the transparent organic polymer material including a transparent resin sheet extending from an interior surface of the gap to a ceiling surface side of the push button, and a transparent rubber-like elastic material disposed inside the transparent resin sheet.

A cathode ray tube having a tube envelope, an anti-explosion band wrapped around the tube envelope, the band having parallel upper and lower arm portions and parallel left and right arm portions, rear extension portions extending rearwardly from the upper and lower arm portions, and degaussing coils secured to the rear extension portions. The structure is such that an external magnetic shield member used in the prior art can be omitted so that the manufacturing process for the cathode ray tube is simplified and the manufacturing cost is reduced.

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Tokyo, Japan

Hitoshi Uchiyama