Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1986-04-30
1987-10-06
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
335262, 335270, H01F 708
Patent
active
046986090
ABSTRACT:
A magnetic tripping device for an electrical wiring device includes a U-shaped magnetic yoke, a cylindrical non-magnetic coil form having two end surfaces and a periphery and being disposed in the magnetic yoke, a magnetic core disposed in the coil form, a magnetic armature movably disposed in the coil form, and a compression spring disposed in the coil form between the magnetic core and the magnetic armature, the coil form having at least two radial embossings uniformly distributed over the periphery in the vicinity of the end surfaces for fixing the magnetic core in place in the coil form and for guiding the magnetic armature in the coil form with a limited stroke and a sliding fit.
REFERENCES:
patent: 3837618 (1974-09-01), Juhel
Bruckner Werner
Goehle Rolf
Greefe Klaus
Schmitt Volker
Brown Boveri & Cie AG
Greenberg Laurence A.
Harris George
Lerner Herbert L.
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