Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1983-11-23
1985-12-10
Duggan, Donovan F.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
335260, 335278, 310 30, H01F 708
Patent
active
045582939
ABSTRACT:
A solenoid assembly comprising a magnetic plunger, an electric coil for generating a magnetic flux in a direction along an axis of the magnetic plunger, a main yoke composed of at least two separate members for defining a magnetic flux passage around the electric coil, and a pair of yoke end members held in engagement respectively with opposite ends of the main yoke, an outer casing. The yoke end members have recesses extending substantially normally to the axis of the magnetic plunger, and the main yoke has projections fitted respectively in the recesses to maintain the main yoke and the yoke end members in engaging relationship. The outer casing has an inner wall keeping the main yoke held in engagement with the yoke end members. A leaf spring acts on the main yoke to hold the latter securely in place in the outer casing. The yoke end members have cylindrical projections supporting thereon the electric coil between the projections of the main yoke. Magnetic cores are firmly held against a permanent magnet by resilient members fitted in slots defined in outer peripheral surface of a plunger shaft.
REFERENCES:
patent: 3331042 (1967-07-01), Erickson et al.
patent: 3504315 (1970-03-01), Stanwell
patent: 3727160 (1973-04-01), Churchill
patent: 4236131 (1980-11-01), Grandclement
patent: 4290039 (1981-09-01), Tochizawa
patent: 4363980 (1981-08-01), Petersen
patent: 4479162 (1984-10-01), Offutt et al.
Haneda Hideo
Yamanaka Minoru
Aisin Seiki Kabushiki Kaisha
Duggan Donovan F.
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