Patent · US Expired

Keyboard, especially for electronic payment terminals, and keypad

US7009121B2 · kind B2 · utility

0Cited by

9References

18Claims

0Family size

Assignee

Preh-Werke GmbH & Co. KG · DE

Inventors

Gerhard Hochgesang · Bad Neustadt an der Saale, DE
Klaus Schmoeger · Bad Neustadt an der Saale, DE
Dieter Weber · Leonberg, DE

Key dates

Filing date	Apr 22, 2003
Grant date	Mar 7, 2006
Priority date	—
Expiry date	Jan 4, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH01H2231/006
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.