Patent · US Expired

Keyboard assembly

US4202640A · kind A · utility

4Cited by

24References

1Claims

0Family size

Assignee

Kienzle Apparate GmbH · DE

Inventors

Helmut Schmidt · Riegelsberg, DE
Walter Strobel · Unterkirnach, DE
Gunter Treude · Villingen-Schwenningen, DE
Paul Blaser · Villingen-Schwenningen, DE

Key dates

Filing date	Apr 27, 1978
Grant date	May 13, 1980
Priority date	—
Expiry date	Apr 27, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S84/07
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A keyboard assembly includes a U-shaped carrier member and a plurality of key members connected thereon by resiliently yieldable legs having detent portions which engage cooperating recesses provided in the bottom wall of the U-shaped carrier member with snap action. Each key member has an upper and a lower housing port which are snap-fastened to each other, and an actuating shaft axially movable to energize an electrical component mounted below the carrier member. A locking member is also provided to lock the shaft in a down actuating position.

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