Solenoid with magnetic control of armature velocity

Details Solenoid with magnetic control of armature velocity Solenoid with magnetic control of armature velocity

1994-10-17

1996-10-15

Brown, Brian W.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335247, 335261, 335262, 335271, 335277, 335279, 335281, H01F 712

Patent

active

055658326

ABSTRACT:
A low-noise solenoid has an armature with a projecting ridge receivable within a groove in a pole piece. As the ridge enters the groove, the magnetic force which opposes a return spring decreases until there is equilibrium whereat the armature remains suspended without impacting upon the pole piece.

REFERENCES:
patent: 2407963 (1946-09-01), Persons
patent: 2888233 (1959-05-01), Windsor
patent: 3168242 (1965-02-01), Diener
patent: 3805204 (1974-04-01), Petersen
patent: 4008448 (1977-02-01), Muggli
patent: 4522372 (1985-06-01), Yano et al.
patent: 4583067 (1986-04-01), Hara

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