Device for preventing radio frequency interference from spark pl

Details Device for preventing radio frequency interference from spark pl Device for preventing radio frequency interference from spark pl

1984-01-06

1984-08-14

Desmond, Eugene F.

Geometrical instruments

339DIG3, 339143S, 339 26, H01R 466

Patent

active

044653310

ABSTRACT:
A device for preventing radio frequency interference generated by spark plug of internal combustion engines. The device includes a cover member adapted to cover at least a part of the high-voltage portion of the spark plug such as high-tension cord together with the end of the plug connected to the cord. The cover member is made of a highly soft, flexible and electrically conductive rubber material (high molecular compound). The cover member is grounded through a grounding line to the body of the engine. This device is suitable for use in machines having limited space for mounting the radio frequency interference prevention device, such as chain saw having an internal combustion engine.

REFERENCES:
patent: 1940325 (1933-12-01), Rabezzana
patent: 2323399 (1943-07-01), Jacobi
patent: 2621312 (1952-12-01), Mascuch et al.
patent: 2730562 (1956-01-01), Marden
patent: 3965879 (1976-06-01), Fitzner

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