Spark plug testing apparatus

Details Spark plug testing apparatus Spark plug testing apparatus

1993-08-31

1995-06-20

O'Shea, Sandra L.

Electricity: measuring and testing

Internal-combustion engine ignition system or device

Spark plug removed or tested in a test fixture

324397, 73116, G01M 1902

Patent

active

054263697

ABSTRACT:
A new and improved spark plug testing apparatus is in the form of an electrically conductive, metallic spring clip and includes a pair of first electrically conductive contact portions for contacting an electrically conductive externally threaded portion of a spark plug. A first resilient portion is connected to the pair of first electrically conductive contact portions for clamping the first electrically conductive contact portions onto the electrically conductive externally threaded portion of the spark plug. A pair of second resilient portions is connected to the respective first electrically conductive contact portions, and a pair of second electrically conductive contact portions is connected to the respective second resilient portions, such that the first resilient portion urges the second electrically conductive contact portions onto an electrically conductive internally threaded portion of a spark plug receiving aperture on an internal combustion engine. Inwardly bent ends are located at respective ends of the second electrically conductive portions for facilitating insertion of the second electrically conductive contact portions into the spark plug receiving aperture of the engine. A holder assembly, which includes a spark plug socket portion, may be connected to the first resilient portion of the spring clip. A handle assembly is received by the holder assembly and includes a pair of retention brackets for retaining the holder assembly when the handle portion is disconnected from the spark plug socket portion. The handle assembly may include an assembly of feeler gauges, a brush, and a magnifying lens.

REFERENCES:
patent: 1345337 (1920-07-01), Ainge
patent: 1385222 (1921-07-01), Miller
patent: 1422742 (1922-07-01), Cook
patent: 1457234 (1923-05-01), Strout
patent: 1521041 (1924-12-01), Opsahl
patent: 1663130 (1928-03-01), Houghton
patent: 1713373 (1926-02-01), Burger
patent: 4490677 (1984-12-01), Risner
patent: 4746868 (1988-05-01), Davis

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