Patent · US Expired

Electric hand power tool with switching key

US6794593B2 · kind B2 · utility

4Cited by

2References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ernst Kraenzler · Echterdingen, DE
Peter Stierle · Rübgarten, DE
Harald Krondorfer · Aurora, US
Ralph Dammertz · Rantoul, US
Ralph Beetz · Bukit Mertajam, MY
Mario Pauli · Gundelsheim, DE

Key dates

Filing date	Sep 24, 2002
Grant date	Sep 21, 2004
Priority date	—
Expiry date	Sep 24, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH01H21/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric hand power tool has an on/off switch, an elongated switching key having a front end and a rear end and actuating the switch, a blocking lever carried by and projecting from the switching key to prevent or to allow turning on of the latter, the switching key being supported turnably, the switching key having a convex curvature starting substantially centrally and extending toward the rear end, the switching key carrying the blocking lever near the rear end, the blocking lever having an upper edge located under a tangent between the convex curvature and the rear end of the switching key.

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