Patent · US Active

Screwdriving tool with free wheel gear

US7878091B2 · kind B2 · utility

12Cited by

15References

14Claims

0Family size

Assignee

Wera-Werk Hermann Werner GmbH & Co. KG · DE

Inventors

Michael Abel · Boulder, US
Andre Mueller · Hilzingen, DE
Oliver Pistor · Wuppertal, DE
Martin Strauch · Wuppertal, DE

Key dates

Filing date	Jul 31, 2009
Grant date	Feb 1, 2011
Priority date	—
Expiry date	Jul 31, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25G1/066
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A screwdriving tool includes a gear head and a drive arm. The gear head forms a gear housing, in which a free wheel or ratchet gear having an output rotational axis is arranged. A front side of the gear head includes an output coupling, in the shape of a polygon. The drive arm can be pivoted about a pivot axis, which is substantially transverse to the output rotational axis, from a quick-action screwdriver position, in which the drive arm is in the output rotational axis, into a power-action screwdriver position, in which the drive arm extends substantially transversely to the output rotational axis and can be fixed in both pivot positions by detents. The detents can be moved from a detent position into a release position by means of an actuating member associated with the drive arm.

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