Patent · US Expired

Actuation device for a switch particularly for a hand machine tool

US4973807A · kind A · utility

6Cited by

8References

5Claims

0Family size

Inventors

Manfred Stabler · Echterdingen, DE
Walter Barth · Leinfelden, DE
Winfried Helm · Echterdingen, DE

Key dates

Filing date	Jun 23, 1986
Grant date	Nov 27, 1990
Priority date	—
Expiry date	Jun 23, 2006

Classification

Technology area (CPC H)Electricity
CPC primaryH01H2300/026
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An actuation device for a switch of a hand machine tool, particularly for a Totmann switch which provides for fatigue-free operation. The actuation device includes a front wall provided with a locking projection engageable in a recess formed in the wall of the switch housing. A restoring spring acts on an actuation member. Two spaced ribs with inclined surfaces are provided on the housing wall. The locking projection slides along the inclined surfaces of the spaced ribs. The locking projection may be broken away from the front wall of the actuation member whereby the end of the front wall would slide along the inclined surfaces of the ribs.

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