Patent · US Active

Hand-held hammer drill

US7578358B2 · kind B2 · utility

2Cited by

12References

6Claims

0Family size

Assignee

AEG Electric Tools GmbH · DE

Inventors

Achim Hess · Korb, DE
Stefan Pohl · Wenden, DE
Markus Wörner · Winnenden, DE
Hans Klöpfer · Waiblingen, DE

Key dates

Filing date	Jan 10, 2008
Grant date	Aug 25, 2009
Priority date	—
Expiry date	Mar 2, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/335
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A hand-held hammer drill has a housing, a tool spindle rotatingly driving a tool, a hammer action percussion-driving the tool, a swash plate drive driving the hammer action, and a countershaft driving as needed the tool spindle and the hammer action. A first bearing and an axial bearing are provided. The hub is rotatably supported in a cantilevered arrangement by the first bearing in the housing and coaxially surrounds the countershaft. The hub has a free cantilevered end and the axial bearing is disposed on the free cantilevered end, wherein the axial bearing axially supports the countershaft and has radial play relative to the countershaft.

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