Patent · US Active

Electric hand-held power tool with a shut-off delay device

US9093843B2 · kind B2 · utility

16Cited by

0References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Bernd Wirnitzer · Echterdingen, DE
Rainer Glauning · Echterdingen, DE

Key dates

Filing date	Oct 3, 2012
Grant date	Jul 28, 2015
Priority date	—
Expiry date	Feb 13, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric hand-held power tool includes at least one electrical drive, at least one electrical device that requires electrical energy in order to operate, a shut-off delay device for the electrical drive and/or the electrical device, at least one rechargeable battery for supplying electrical energy to the drive and the electrical device and an exhaustive-discharge safeguard device. The exhaustive-discharge safeguard device specifies the delay time (Δt) of the shut-off delay device as a function of the state of charge of the rechargeable battery it has determined.

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