Ignition plug for use in internal combustion engines

Details Ignition plug for use in internal combustion engines Ignition plug for use in internal combustion engines

1974-05-22

1976-06-22

Rolinec, R. V.

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

313140, H01T 1320

Patent

active

039653846

ABSTRACT:
An internal combustion engine spark plug including an outer metal shell, a central electrode and a side electrode extending from the shell toward the central electrode to form a spark gap is provided with an open element formed of rigid metal wire resistant to the spark plug ambient use conditions, the member surrounding the spark gap and being spaced from the spark gap a distance at least equal to the width of the spark gap. Among the forms of the wire member are a pair of U-shaped wire members each having at least one leg secured to the shell and a horizontal linear cross leg parallel to and coplanar with the side electrode, two pair of such members arranged in quadrative with the cross legs forward of the side electrode, the members may have thinner wire wrapped about its legs, and an element including a pair of laterally spaced L-shaped wire members with the vertical legs connected to the shell and an intermediate L-shaped member formed of twisted wire with a horizontal leg underlying the side electrode. The wire forming the element is thinner than the electrodes and is formed of Cr, Mo, W, Ni, Ir, Pt, Au, Co or Al or alloys thereof.

REFERENCES:
patent: 1384818 (1921-07-01), Bathurst
patent: 2833265 (1958-05-01), Hindle et al.
patent: 3171396 (1965-03-01), Vidal

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