Patent · US Active

Striking mechanism for a handheld power tool

US8011443B2 · kind B2 · utility

13Cited by

13References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Gerhard Meixner · Echterdingen, DE
Otto Baumann · Echterdingen, DE
Jan Koalick · Leinfelden, DE

Key dates

Filing date	Oct 24, 2007
Grant date	Sep 6, 2011
Priority date	—
Expiry date	Mar 4, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/371
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention is a striking mechanism for a handheld power tools in particular electric hammer. A piston is arranged in an axially bidirectionally movable manner in a guide tube. A striker is provided which acts on a striking pin and which is held in a movable manner in the guide tube. A compression space is delimited by the piston and the striker such that an air cushion is enclosed therein. It is proposed that at least one spring element is provided between the striker and the striking pin.

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