Electromagnetic fuel injection valve

Valves and valve actuation – Electrically actuated valve – Including solenoid

Reexamination Certificate

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Details

C239S585100, C335S299000

Reexamination Certificate

active

11235551

ABSTRACT:
An electromagnetic fuel injection valve includes a coil assembly housed in a solenoid housing having a cylindrical magnetic metal coil case which integrally has, at one end side, a ring-shaped end wall portion and a press-fit cylindrical portion integrally connected to an inner periphery of the end wall portion so that the magnetic cylindrical body is press-fitted to the press-fit cylindrical portion and the press-fit cylindrical portion is welded to the magnetic cylindrical body, and a flange portion which is provided at a rear end of a fixed core. Wherein at least the solenoid housing is covered with a resin molded part and integrally has a power receiving coupler, the coil case being formed by a burring process to a central portion of a closed end of a bottomed cylindrical material having a circular opening with a smaller diameter than an outer diameter of the press-fit cylindrical portion.

REFERENCES:
patent: 5178362 (1993-01-01), Vogt et al.
patent: 5236174 (1993-08-01), Vogt et al.
patent: 5255855 (1993-10-01), Maier et al.
patent: 6317978 (2001-11-01), Reiter
patent: 55-144759 (1980-11-01), None
patent: 08-232813 (1996-09-01), None
patent: 11-247739 (1999-09-01), None
patent: 2000-249030 (2000-09-01), None
patent: 2002-021678 (2002-01-01), None
patent: 2002-081356 (2002-03-01), None
patent: 2002-089399 (2002-03-01), None
patent: 2002-276504 (2002-09-01), None
patent: 2003-120466 (2003-04-01), None
patent: 2004-76700 (2004-03-01), None

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