Patent · US Expired

Hand-held tool with electromagnetic hammer mechanism

US6520269B2 · kind B2 · utility

84Cited by

6References

12Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Harald Geiger · Schwanau, DE
Hubert Daxenberger · Herrsching am Ammersee, DE
Ronald Vuillemin · Zollikofen, CH
Marcel Jufer · Morges, CH
Udo Schochtert · Muzzano, CH

Key dates

Filing date	May 14, 2001
Grant date	Feb 18, 2003
Priority date	—
Expiry date	Jul 13, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D11/064
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A hand-held tool including an electromagnetic hammer mechanism (1) for applying a percussion movement to a working tool (3) and including at least one stator, at least one coil (4a), a striking piston formed as a yoke (10) supported in a magnetic flux for a limited displacement along the oscillation axis (A) and having at least one magnetomotive region (11) formed of a soft magnetic ferroelectric material, and at least one magnet (5a) associated with the stator, magnetizable along the oscillation axis (A), and arranged along and adjacent to at least one segment of the coil (4a) located at an end of the stator.

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