Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1986-04-04
1987-04-14
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
335279, 25112915, H01F 300
Patent
active
046582312
ABSTRACT:
An actuating magnet comprises a magnet body (10), an exciting winding (15) rranged in the said magnet body (10) and a radially movable armature (17) having a pre-determined first radial cross-sectional surface. One end of the armature (17) having a second radial cross-sectional surface (19) substantially larger than the said first cross-sectional surface (20) forms a pole piece (18). Between the said pole piece (18) and a wall (11) of the said magnet body (10) which covers in the radial direction at least part of one end face of the said exciting winding (15) there is provided an air gap (20).
In order to increase the actuating force of the magnet without changing its outer dimensions and to provide a closed system, the wall (11) covers the said end face of the exciting winding (15) and shields it magnetically, the pole piece (18) is arranged opposite to the inside of the said wall (11) and the air gap (20) extends in the radial direction (FIGS. 1a+b).
REFERENCES:
patent: 2992304 (1961-07-01), Andrews
patent: 3007493 (1961-11-01), Viale et al.
patent: 3281741 (1966-10-01), Beliveau
patent: 4272747 (1981-06-01), Bauer
Cohanciuc Victor
Schwenzer Reinhard
GAS Gesellschaft fur Antriebs-und Steuerungs-technik mbH & Co. K
Harris George
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