Patent · US Expired

Electrical contact arrangement for a battery-operated instrument

US4303962A · kind A · utility

4Cited by

3References

5Claims

0Family size

Assignee

Gebruder Junghans GmbH · DE

Inventors

Robert Wolber · Lauterbach, DE
Roland Maurer · Lauterbach, DE
Peter Jesse · Schramberg, DE

Key dates

Filing date	Aug 22, 1979
Grant date	Dec 1, 1981
Priority date	—
Expiry date	Aug 22, 1999

Classification

Technology area (CPC G)Physics
CPC primaryG04C3/008
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A contact arrangement for a battery-operated instrument, especially a battery-operated clock, having a housing made of synthetic material. Two contact elements are provided for making connection between the two terminals of a battery and two respective paths of a circuit board. One of the contact elements includes a bus portion fastened to the housing, and a pair of legs. A first leg makes contact with one terminal of the battery and the second leg makes contact with a path of the circuit board. The second leg is designed in the form of a knife-edge contact, one portion thereof bearing against a wall of the housing, and another portion thereof bearing against the circuit board. The second leg thus holds the circuit board in its inserted position by mechanical force. The contact element further includes a third leg which electrically contacts as well as mechanically clamps a small bulb when the latter is inserted into the housing.

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