Electric heating – Heating devices – Resistive element: igniter type
Reexamination Certificate
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.
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patent: 6342690 (2002-01-01), O'Donnell
patent: 6346688 (2002-02-01), O'Donnell
Averill, Jr. Edgar W.
Green Kenneth L.
Robinson Daniel
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