Patent · US Active

Rotary tool having a manual ratchet mechanism

US8397831B2 · kind B2 · utility

3Cited by

6References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Mohsein Wan · Bukit Mertajam, MY
Manfred Lutz · Schweinfurt, DE
Romli Norrofaizi · Bukit Mertajam, MY

Key dates

Filing date	Jun 22, 2009
Grant date	Mar 19, 2013
Priority date	—
Expiry date	Jul 2, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25B13/463
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A rotary power tool according to the invention includes a manual ratchet mechanism having a driveshaft driven by a motor, an output shaft, a disengageable shaft coupling element for mechanically coupling the driveshaft to the output shaft, and a disengageable ratchet element for blocking rotation of the output shaft unidirectionally. The invention provides that one of the coupling element and the ratchet element is engaged, the other one is disengaged.

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