Magnetic anchoring apparatus

Details Magnetic anchoring apparatus Magnetic anchoring apparatus

1975-10-14

1978-05-16

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Work or object holding type

335291, H01F 720

Patent

active

040901629

ABSTRACT:
Magnetic apparatus for securing ferromagnetic pieces to lifting equipment, conveying devices and machine tools. The apparatus comprises a first nonreversible magnetopermanent core; a second reversible magnetopermanent core coacting with the former on a same magnetic yoke defining part of the work securing surface, and a solenoid wound about said reversible core and supplied with direct current in either direction for a period of time sufficient to cause said reversible core to follow a portion of the hysterisis loop thereof to generate an electromagnetic field for inverting the polarization of said core, thus enabling respective activation or deactivation of the work securing surface.

REFERENCES:
patent: 3089064 (1963-05-01), De Bennetot
patent: 3316514 (1967-04-01), Radus et al.
patent: 3428867 (1969-02-01), Becker
patent: 3978441 (1976-08-01), Sobottka et al.

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