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Primary Examiner: Smith, Alfred E.
Assistant Examiner: Hille, Rolf
Attorney:

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Title: Device for sensing the direction of motion

Abstract: A device for sensing and indicating the direction of motion of a moving member. A discontinuity is formed on a moving member. Two sensors capable of detecting the discontinuity are spaced apart a distance less than the width of the discontinuity. Logic circuitry determines which sensor detection occurs before both sensors produce coincident detections. The sensor detection occurring before coincidence unambiguously indicates the direction of motion. A gating circuit produces an output signal for one direction of motion and a second signal for the opposite direction of motion.

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Inventors: Luteran, Frank Kenneth (Auburn, NY, US)

Application Number: 472280
Filing Date: 1974-05-22
Publication_date: 1976-03-16
Assignee:
Primary Class(es): 324/165 324/175
Other Classes:
US Patent Ref:

3264639	Aug, 1966	Lerman et al.	324/168.
3299702	Jan, 1967	Hulme	324/165.
3313945	Apr, 1967	Clinton	324/175.
3728565	Apr, 1973	O'Callaghan	324/165.
3783339	Jan, 1974	Matty	324/165.

Other Refs: Other References: J. Kumar, V. Kumar, A. Gupta, "On RPM and AF Meter," J. Inst. Eng. (India) Electron. & Telecommun. Eng. Div., Vol. 52, No. 7 (Mar. 1972).