Keyboard, especially for electronic payment terminals, and keypad
AssigneePreh-Werke GmbH & Co. KG
InventorsGerhard Hochgesang, Klaus Schmoeger, Dieter Weber
Life of this patent
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Abstract
A one-piece keyboard housing in a simple but compact manner is provided by using an internal gas pressure injection molding process (air mold process). With this process, the keyboard housing can be formed as a one-piece molded part with recesses and cavities. The cavity serves to reduce weight, and the process itself improves stability within the keyboard housing. The molded part is formed of a traylike first housing shell, in which a keypad can be mounted, and a second housing shell with recesses that joins the first housing shell in an n-shape.
Claims18
A keyboard comprising:
- a one-piece keyboard housing for accommodating a keypad with keys, the keyboard housing including at least two open housing shells, the second housing shell joining the first housing shell at a top region of the keyboard housing forming an n-shape,
- wherein the first housing shell has a traylike recess for accommodating and mounting the keypad and has a u-shaped border surrounding the recess, which encloses a cavity within the first housing shell.
A keypad for a keyboard having a keyboard housing, having keys and contacts associated therewith, the keypad comprising:
- a light source for generating light;
- a printed circuit board for use as a support plate;
- a translucent or transparent contact mat;
- and
- a transparent or translucent light guide as a support element for the keys,
- wherein substantially all of the light from the light source is transmitted through the transparent or translucent light guide to the keys.
Dependencies are inferred from the claim text.