Shuntable magnetic mask support apparatus

Details Shuntable magnetic mask support apparatus Shuntable magnetic mask support apparatus

1997-01-23

2000-07-04

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Blade sharpening or conditioning type magnets

269 8, H01F 720

Patent

active

060844949

ABSTRACT:
A mask support device including two communicating elements, a first element having ferromagnetic shunts, and a second element containing permanent magnets, and wherein the elements are rotatable about a central axis and assume fixed positions in the rotation. The mask support device in one position attracts a ferromagnetic metal mask. In a second position, owing to the shunt redirecting the magnetic field, releases the metal mask.

REFERENCES:
patent: 5147828 (1992-09-01), Ebbing et al.
patent: 5266914 (1993-11-01), Dickson et al.
patent: 5474614 (1995-12-01), Robbins

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