Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Patent
1995-11-16
1997-05-20
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Multiple contact type
335131, H01H 6702
Patent
active
056316135
ABSTRACT:
A magnet switch for an engine starter includes a yoke made of magnetic material and having a cylindrical shape with a bottom and an opening. A coil disposed in the yoke includes an insulated electric wire. A stationary core made of magnetic material closes the opening of the yoke. A sleeve made of non-magnetic metal has a cylindrical shape. The sleeve is located between the bottom of the yoke and the stationary core. A plunger made of magnetic material is at least partially located in the sleeve. The plunger is slidable relative to the sleeve in an axial direction. The coil includes a regular winding which extends around the sleeve. The coil is compressed and held between the bottom of the yoke and the stationary core.
REFERENCES:
patent: 4852417 (1989-08-01), Tanaka
patent: 5245304 (1993-09-01), Zenmei
patent: 5424700 (1995-06-01), Santarelli
Niimi Masami
Shiga Tsutomu
Donovan Lincoln
Nippondenso Co. Ltd.
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