Electronic ignition timing coil replacement method

Details Electronic ignition timing coil replacement method Electronic ignition timing coil replacement method

1986-05-09

1988-04-05

Echols, P. W.

Metal working

Method of mechanical manufacture

With testing or indicating

29271, B23Q 700

Patent

active

047349700

ABSTRACT:
An inexpensive and reliable tool accurately orients pick-up core assembly and checks the bushing runout in an electronic ignition unit for automobile. The tool includes a T-shaped member having a precisely formed centering and locating shaft of a precise length in combination with an integral core locating plate radially projecting from the locating shaft. The length of the pin or shaft is selected to precisely locate the core locating plate. The electronic ignition unit includes a magnetic trigger unit having a trigger coil mounted within a distributor. An annular magnetic core has pyramidal trigger elements and the rotor has closely spaced opposed pyramidal trigger elements. Accurate, precise location of the pyramidal elements and the sharp opposed edges are critical to proper ignition. The tool has the shaft located within the rotor bushing and precisely locates the locating plate, which precisely locates the core in precise concentric aligned orientation to the rotor axis. The tool may be formed for one ignition module unit with the locating plate formed having a precisely formed annular face which is precisely parallel and concentrix with the periphery of the locating pin. Alternatively, the locating plate is formed with a chamfered edge face, with the chamfer precisely located and constructed to provide alternate annular surfaces for different ignition module units.

REFERENCES:
patent: 1941022 (1933-12-01), Shelley
patent: 1976156 (1935-01-01), Nelson
patent: 2067442 (1937-01-01), Frisz
patent: 3069762 (1962-12-01), Sonnier
patent: 3254247 (1966-05-01), Falge
patent: 3685126 (1972-08-01), Kane
patent: 4129107 (1978-12-01), Boyer

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