Internal-combustion engines – Igniters – Sparkers
Patent
1979-11-16
1981-08-25
Myhre, Charles J.
Internal-combustion engines
Igniters
Sparkers
403356, 74440, F02P 306
Patent
active
042853052
ABSTRACT:
An ignition timing method and apparatus is disclosed for presetting the ignition timing of an internal combustion engine having an engine driven shaft and a wheel supported on that shaft carrying a portion of the ignition system with another portion of that ignition system supported by the engine in a relatively fixed position adjacent the wheel. A slot is provided in the shaft surface extending generally in the direction of the axis of rotation of the shaft and a further slot is provided along an inner hub of the wheel. A selected one of several different keys including spacer keys of a generally frustoconical configuration having an outer protuberance for engaging a keyway in the wheel hub and an inner protuberance for engaging a keyway in the shaft is selected and positioned intermediate the shaft and hub to fix the relative angular orientation between the shaft and hub with those keys of the frustoconical sleeve configuration compensating for the dissimilarity in the size between the hub and shaft. The spacing between the inner and outer protuberances on the frustoconical sleeve determines a selected one of the different possible angular orientations while a non-spacing key having a selected offset determines the particular angular orientation between the wheel hub and a mating shaft.
REFERENCES:
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patent: 3830577 (1974-08-01), Rampe et al.
patent: 3862808 (1975-01-01), Perini
Kaufman Vernon R.
Nelson Eugene L.
Jeffers Albert L.
Myhre Charles J.
Nelli R. A.
Rickert Roger M.
Tecumseh Products Company
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