Electronic speed sensor

Details Electronic speed sensor Electronic speed sensor

1983-06-09

1985-07-16

Krawczewicz, Stanley T.

Electricity: measuring and testing

Electrical speed measuring

Speed comparing means

324174, G01P 356

Patent

active

045299323

ABSTRACT:
A speed sensing apparatus (10) counts a predetermined number of gear teeth (18) on a gear (16) driven by a motor (8). The duration of time required to count the predetermined number of gear teeth (18) is compared to a timing signal of preselected duration. The comparison is used to make a determination as to whether the velocity of the gear is above or below a preselected velocity.

REFERENCES:
patent: 3500375 (1970-03-01), Klimo
patent: 3599154 (1971-08-01), Carol, Jr. et al.
patent: 3757167 (1973-09-01), Yoshikawa et al.
patent: 4199719 (1980-04-01), Grob
patent: 4218879 (1980-08-01), Hagrman et al.

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