Patent · US Active

Guard device

US9216490B2 · kind B2 · utility

9Cited by

18References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Cornelius Boeck · Tauberbischofsheim, DE
Joachim Schadow · Stuttgart, DE
Tobias Overbeck · Landgut Burg, DE
Rainer Vollmer · Bad Liebenzell, DE

Key dates

Filing date	Jun 24, 2013
Grant date	Dec 22, 2015
Priority date	—
Expiry date	Jul 16, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB24B23/02
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A guard device includes a fastening element defining a central opening and configured to be fastened onto a collar of a power tool, a guard portion extending from the fastening element and configured to surround at least a portion of a tool holder extending from the collar, a braking element pivotably supported on the fastening element and including a frictional engagement surface that is configured to be pivoted against the collar so as to apply a frictional braking force against the collar when the power tool is in an operating state, and an actuating element moveably supported on the fastening element and configured to pivot the braking element such that the frictional engagement surface is positioned in contact with the collar. The frictional engagement surface is configured to increase the braking force applied to the collar in response to a braking state of the power tool.

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