Magnetic lifting apparatus

Details Magnetic lifting apparatus Magnetic lifting apparatus

1998-12-18

2000-06-20

Cherry, Johnny D.

Handling: hand and hoist-line implements

Magnet

335288, 335295, B66C 104, H01F 704

Patent

active

060768738

ABSTRACT:
A magnetic lifting apparatus includes a plurality of magnetic substances, a plurality of rotor seat members, magnetic rotors, and permanent magnets alternately aligned with the plurality of magnetic substances. The apparatus includes stopping members for stopping rotation of magnetic rotors in a one way direction whereby upon lifting the operating member, the magnetic lifting apparatus either has a magnetic activity or no magnetic activity so as to attach to or release from an object, respectively.

REFERENCES:
patent: 2471067 (1949-05-01), Hitchcock
patent: 4055824 (1977-10-01), Baermann
patent: 4250478 (1981-02-01), Cardone et al.
patent: 4314219 (1982-02-01), Haraguchi
patent: 4379277 (1983-04-01), Braillon
patent: 4465993 (1984-08-01), Braillon
patent: 5166654 (1992-11-01), Doyelle
patent: 5435613 (1995-07-01), Jung

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