Patent · US Active

Magnetic base

US11279019B2 · kind B2 · utility

0Cited by

11References

25Claims

0Family size

Assignee

C. & E. FEIN GMBH · DE

Inventors

Stefan Scherrenbacher · Schwäbisch Gmünd, DE
Sergej DENZEL · Hinterhochstett, DE
Gabriel Huaylinos Dolderer · Schwäbisch Gmünd, DE

Key dates

Filing date	May 18, 2020
Grant date	Mar 22, 2022
Priority date	—
Expiry date	Jul 6, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T408/554
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A magnetic base for an electric machine tool, in particular for a magnetic core drilling machine, having a body in which is accommodated at least one first permanent magnet, the magnetic force of which combines with the magnetic force of at least one second permanent magnet to form a resultant holding force, wherein the at least one second permanent magnet is supported in the body such that it can rotate about a rotation axis through an angle of rotation between a first position in which the resultant holding force of the magnetic base is maximized and a second position in which the resultant holding force of the magnetic base is minimized, and having a controller for rotating the second permanent magnet between the first position and the second position.

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