Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Retarded or delayed type
Patent
1981-11-12
1983-10-18
Gonzales, John
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Retarded or delayed type
335222, 335230, 354234, G03B 924
Patent
active
044102550
ABSTRACT:
An electromagnetic drive device of an electromagnetically operated shutter has a permanent magnet which is of a square shape and is magnetized into a multipolar state; a rotation shaft disposed in parallel relationship with magnetic flux produced by the permanent magnet; and a hexagonal coil having an electric current supplied thereto and opposed to the permanent magnet in such a way as to perpendicularly intersect the magnetic flux of the permanent magnet. The hexagonal coil part at which the current is to be supplied and which produces a force in the reverse rotating direction of the hexagonal coil, when the current is supplied, is located outside of the plane of mangetic flux.
REFERENCES:
patent: 4303326 (1981-12-01), Kiuchi et al.
patent: 4333722 (1982-06-01), Lee
patent: 4334749 (1982-06-01), Saito et al.
patent: 4338009 (1982-07-01), Lee
Canon Kabushiki Kaisha
Gonzales John
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