Apparatus for detecting metal parts which are movable relative t

Details Apparatus for detecting metal parts which are movable relative t Apparatus for detecting metal parts which are movable relative t

1991-05-31

1993-02-16

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Counting animate or inanimate entities

377 33, 340674, 324243, 324327, 331 65, G06M 302

Patent

active

051877236

ABSTRACT:
An apparatus for the detecting of metal parts (12) which move relative to a metal sensitive sensor arrangement has at least two part sensors which transmit an electrical pulse to an electronic evaluation circuit for a particular approach by a metal part (12). Several part sensors are connected spatially in series with one another so that a specific metal part (12) causes the part sensors to respond in sequence. The electronic evaluation circuit (13) then transmits a signal when and only when it detects the pulse sequence which arises through sequential response of the part sensors.

REFERENCES:
patent: 2893633 (1959-07-01), Van Haagan
patent: 3618819 (1971-11-01), Blackburn et al.
patent: 3943339 (1976-03-01), Koerner et al.
patent: 4768209 (1988-08-01), Yu
patent: 4866377 (1989-09-01), Macovschi
patent: 4982412 (1991-01-01), Gross
patent: 5033065 (1991-07-01), Keromnes

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