Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1991-02-08
1992-10-13
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
335278, 336 96, 296021, H01F 300, H01F 708
Patent
active
051554615
ABSTRACT:
A solenoid stator assembly for electronically actuated fuel injectors is disclosed as having an E-shaped stator core including a top portion and three parallel pole pieces extending orthogonally therefrom. The outer pole pieces each have an outermost side, and each of the three pole pieces has a distal end, a face being formed across the distal end. Each of the outer pole pieces has an attachment slot formed across its outermost side proximate its distal end. A coil of electric wire is disposed around an insulating spool disposed on the central pole piece, and leads from the coil are connected to terminals. A flange on one end of the spool exerts outward forces on the outer pole pieces, prestressing them to resist further flexing caused by outwardly directed forces applied by errant fuel under pressure. An insulating cover is molded around the solenoid stator assembly, enveloping it except for portions of the terminals and the faces of the pole pieces, the cover being bonded to at least the stator core. The cover is molded into the attachment slots in the outer pole pieces to enhance adherence of the cover material to the stator core and provide a barrier to any tendency of errant fuel attempting to traverse the interface between the insulating cover and outermost side of each outer pole piece.
REFERENCES:
patent: 4568021 (1986-02-01), Deckard et al.
Haines Leland
Straub Robert D.
Teerman Richard F.
Wolfsen Roger L.
Broome Harold
Diesel Technology Corporation
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