Permanent magnet type lifting device

Details Permanent magnet type lifting device Permanent magnet type lifting device

1979-09-25

1982-02-02

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Work or object holding type

335288, H01F 704, B25B 1100

Patent

active

043142192

ABSTRACT:
A permanent magnet-type lifting device for lifting heavy steel articles or the like in which a magnetic assembly of ferrite magnets stacked to form a single unit between pole pieces of a magnetically permeable material is rotatably disposed between plural magnetic member magnetically isolated from one another. In a preferred embodiment, plural rotated assemblies are provided and are mechanically linked through a common rotation mechanism. The magnetic member have an attracting surface and an inclined portion extending toward the attracting portion.

REFERENCES:
patent: 2209558 (1940-07-01), Bing et al.
patent: 3452310 (1969-06-01), Israelson

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