Patent · US Active

Protective device at least for protecting a user in the event of an uncontrolled blockage of a portable power tool

US10682747B2 · kind B2 · utility

0Cited by

13References

16Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Axel Kuhnle · Freiberg, DE
Lars Schmid · Atzlenbach, DE
Carsten Diem · Ludwigsburg, DE

Key dates

Filing date	Mar 28, 2016
Grant date	Jun 16, 2020
Priority date	—
Expiry date	Jul 19, 2038

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/371
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A protective device at least for protecting a user in the event of an uncontrolled blockage of a portable power tool includes at least one rotationally drivable shaft and at least one wrap-spring-free overload clutch unit which is arranged on the shaft and is configured at least to interrupt transmission of a drive force if a torque limit is exceeded. The protective device further including at least one wrap-spring clutch unit configured to brake the shaft.

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