Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1993-05-27
1995-04-11
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
25112909, H01F 708
Patent
active
054062411
ABSTRACT:
An apparatus for driving valve by electromagnetic force, for an engine capable of being installed in a narrower space due to the interfering object or narrow arrangement pitch of a supply/exhaust valve, comprises: a fixed magnetic pole which is wound with the primary coils and which is opposingly disposed embracing the secondary coils in the perpendicular direction to the reciprocating direction of the secondary coils; an air gap adjacent with a tip end of the fixed magnetic pole and provided in the middle of a magnetic flux path generated from the primary coil; a movable element adapted to be made of magnetic substance, to move freely reciprocating in the air gap, to form part of the magnetic flux path, and to contain the secondary coils.
REFERENCES:
patent: 4614170 (1986-09-01), Pischinger et al.
patent: 4708317 (1987-11-01), Hiyama
patent: 4829947 (1989-05-01), Lequesne
patent: 5009202 (1991-04-01), Kawamura
patent: 5095856 (1992-03-01), Kawamura
patent: 5124598 (1992-06-01), Kawamura
Donovan Lincoln
Isuza Ceramics Research Institute Company, Inc.
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