Positioning sensor

Details Positioning sensor Positioning sensor

1983-06-24

1985-07-09

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Conducting fluid

310168, H02K 1924

Patent

active

045284717

ABSTRACT:
To provide association of a particular angular position of a gear, for example the starter gear of an internal combustion (IC) engine, with an inductive pick-up (10), at least one tooth (15) is made a marker tooth by relieving the end portion (15') over a portion (B1) of its width (B) for a predetermined portion (H1) of the height (H) of the tooth, leaving the remainder of the tooth at its normal height (H) so that operation of the gear is not impaired. The output signal derived from the pick-up will be distorted when the at least one tooth passes thereby, thus providing a reference pulse. The tooth (16, 18) adjacent the marker tooth (15, 17) can be likewise relieved, preferably to a lesser extent. Relief can be parallel to the end portion of the tooth, or at an angle of inclination, the relief of an adjacent tooth preferably being at an angle of inclination opposite that of the marker tooth.

REFERENCES:
patent: 1137544 (1915-04-01), Severy et al.
patent: 3602750 (1971-08-01), Boyer
patent: 3619680 (1971-11-01), Okamoto
patent: 3688306 (1972-08-01), Oishi

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