Glow plug

Details Glow plug Glow plug

2007-02-13

2007-02-13

Robinson, Daniel (Department: 3742)

Electric heating

Heating devices

Resistive element: igniter type

C123S14500A

Reexamination Certificate

active

10781279

ABSTRACT:
A glow plug having an outer body with an inner cavity having tapered sidewalls. An insulating ring having outer tapered walls is held within the body and has an inner opening also having tapered walls. A central electrode, having a tapered wall section, fits tightly in the inner opening of the insulating ring. The insulating ring and central electrode are forced under pressure in the cavity of the glow plug to provide a glow plug capable of withstanding high temperature and pressure applications without leaking.

REFERENCES:
patent: 4080944 (1978-03-01), Bhat et al.
patent: 4088105 (1978-05-01), Bhat et al.
patent: 4418661 (1983-12-01), Esper et al.
patent: 4582981 (1986-04-01), Brooks et al.
patent: 4816643 (1989-03-01), Zulauf et al.
patent: 5251589 (1993-10-01), Duba et al.
patent: 5507255 (1996-04-01), Boisvert et al.
patent: 6342690 (2002-01-01), O'Donnell
patent: 6346688 (2002-02-01), O'Donnell

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