Patent · US Active

Guard anti-rotation lock

US8562395B2 · kind B2 · utility

2Cited by

17References

11Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Cornelius Boeck · Tauberbischofsheim, DE
Joachim Schadow · Stuttgart, DE
Sinisa Andrasic · Schenefeld, DE

Key dates

Filing date	Nov 9, 2007
Grant date	Oct 22, 2013
Priority date	—
Expiry date	Dec 17, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T70/5611
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A system for a hand-held power tool has a tool housing, a receiving unit fixed to the tool housing and a guard unit connected with the hand-held power tool. The guard unit includes a guard extending at least partially around a rotatable tool. A guard anti-rotation lock device includes a clamping band fixedly connected to the guard that establishes a frictional connection between the guard unit and the receiving unit. The receiving unit includes a receiving flange and a connecting element that are together surrounded by and clamped in a clamping region by the clamping band to effect the frictional connection. In a case where the rotatable tool bursts into pieces during operation, the connecting element counteracts rotational movement of the guard unit with respect to the receiving unit by changing a cross-sectional shape of the clamping region.

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