Patent · US Active

Percussive mechanism with an electrodynamic linear drive

US8534377B2 · kind B2 · utility

3Cited by

18References

18Claims

0Family size

Assignee

Wacker Neuson Produktion GmbH & Co. · DE

Inventors

Rudolf Berger · Munich, DE
Otto W. Stenzel · Zöblitz, DE
Wolfgang Schmid · Regensburg, DE

Key dates

Filing date	Jun 28, 2006
Grant date	Sep 17, 2013
Priority date	—
Expiry date	Mar 15, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/375
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A percussive mechanism, which is provided in the form of an, e.g. pneumatic spring percussive mechanism, comprises an electrodynamic linear drive, a drive piston, which can be reciprocally moved inside a percussive mechanism housing by the linear drive, and a percussive piston. An additional hollow space is provided in front of and/or behind the drive piston and can be isolated at least in part from the surrounding area so that a pneumatic spring can be created in the additional hollow space. The pneumatic spring slows the drive piston at its returning points and facilitates a returning motion without loading the electrodynamic linear drive.

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