Patent · US Expired

Simplified line switch for a telephone set

US4556763A · kind A · utility

4Cited by

4References

3Claims

0Family size

Assignee

Nortel Networks Limited · CA

Inventors

Algirdas J. Dragunevicius · London, CA
Gerd Kuhfus · London, CA
Charles R. S. Walker · London, CA

Key dates

Filing date	Apr 25, 1983
Grant date	Dec 3, 1985
Priority date	—
Expiry date	Apr 25, 2003

Classification

Technology area (CPC H)Electricity
CPC primaryH04M1/08
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A line switch assembly for a telephone switch has a unitary switch having a base within which are cantilevered contacts and a cap over the base, the cap having cam formations which actuate the contacts on reciprocal movement of the cap. An actuating member rests on the cap and has an extension with a rib which extends up into a recess in the top housing of the telephone set, the recess being one which accepts one of the handset transducers. Pressure on the rib pivots the actuating member and depresses the cap. The switch is a preassembled unit and is normally mounted on a circuit board carrying other components. A reduced number of components and quicker and easier assembly give a relatively high cost reduction.

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