Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1986-06-27
1988-05-17
Burr, Edgar S.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
335261, 400212, H01F 708
Patent
active
047453869
ABSTRACT:
An improved solenoid wherein the volume of a secondary air gap is increased during the plunger stroke, in order to reduce the increased plunger force that would otherwise occur during the plunger stroke.
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patent: 4600322 (1986-07-01), Vermet-Gaud et al.
patent: 4619536 (1986-10-01), Takemoto
IBM Tech. Disc. Bulletin, "Performance Stabilization of Magnetic Actuator", Mitts et al., vol. 15, No. 8, Jan. 1973, p. 2356.
IBM Tech. Disc. Bulletin, "Impression Control for a Typewriter", Simpson, vol. 24, No. 12, May 1982, pp. 6528-6529.
Burr Edgar S.
Greb Kenneth W.
McDaniel James R.
Smith Corona Corporation
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