Patent · US Active

Tool holder for a rotary hammer

US8210545B2 · kind B2 · utility

14Cited by

16References

2Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Eugen Hild · Neckartenzlingen, DE
Ulrich Bohne · Dessau, DE

Key dates

Filing date	Feb 12, 2007
Grant date	Jul 3, 2012
Priority date	—
Expiry date	Jan 3, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T408/95
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A tool holder for a hand-guided drilling device, in particular for a rotary hammer, includes a receiving sleeve that is designed as a single piece in particular and that is drivable in a rotating manner for a shank part of an insertion tool. The recess is open at both end faces and limited therebetween by an inner circumferential surface of the receiving sleeve. The inner circumferential surface (62) of the receiving sleeve (34) includes at least six flat circumferential surface sections (62n through 62u; 84, 86) in the circumferential direction, with adjacent circumferential surface sections (62n, 62o; 62p, 62q; 62r 62s; 62t, 62u) forming an angle of 120 degrees.

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