Strong quasi horseshoe magnet

Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Work or object holding type

Reexamination Certificate

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C335S302000, C335S306000

Reexamination Certificate

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07061354

ABSTRACT:
A permanent magnet assembly, for engaging a generally planar surface of a ferromagnetic object to affix items of interest thereto, includes a shell of a magnetic material. The shell has a portion of either a magic sphere or a magic cylinder and a cavity and the shell terminates in a surface that is generally planar for engaging a ferromagnetic object. The permanent magnet assembly also has an insert located in the cavity. A method of fabricating the permanent magnet assembly is also presented.

REFERENCES:
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patent: 4837542 (1989-06-01), Leupold
patent: 5216400 (1993-06-01), Leupold
patent: 5216401 (1993-06-01), Leupold
patent: 5245621 (1993-09-01), Leupold
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patent: 5428335 (1995-06-01), Leupold et al.
patent: 5438308 (1995-08-01), Leupold et al.
patent: 5666097 (1997-09-01), Leupold
patent: 5990774 (1999-11-01), Leupold

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