Patent · US Expired

Pneumatic spring percussion mechanism with an electro-dynamically actuated driving piston

US7025183B2 · kind B2 · utility

18Cited by

6References

13Claims

0Family size

Assignee

Wacker Construction Equipment AG · DE

Inventors

Michael Steffen · Stockdorf, DE
Rudolf Berger · Munich, DE
Wolfgang Schmid · Regensburg, DE

Key dates

Filing date	Jan 20, 2003
Grant date	Apr 11, 2006
Priority date	—
Expiry date	Jan 20, 2023

Classification

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

Abstract

The invention relates to a pneumatic spring percussion mechanism comprising a driving piston moving back and forth in a housing of the percussion mechanism and a percussion piston, wherein a pneumatic spring is configured between the driving piston and the percussion piston. The movement of the driving piston can be transmitted to a percussion piston by means of said pneumatic spring. The driving piston can be driven by an electric linear motor and is connected to an aromatic of the linear motor, forming a single piece therewith. This arrangement makes it possible to eliminate the use of a conventional rotary motor and a crank mechanism to drive the driving piston.

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