Faulty window construction detecting apparatus

Details Faulty window construction detecting apparatus Faulty window construction detecting apparatus

1977-08-25

1979-01-30

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

83911, 93 61AC, G08B 1900

Patent

active

041375289

ABSTRACT:
A tri-level output sensor senses faulty window construction in a web of continuous business forms of stationery, for controlling visual and audible indicators, including a display of the relative position of the faulty sensed window construction, within a continually fanfolding end stack. Pulsing circuitry drives tri-level-to-digital processing circuitry, conjointly providing referencing information to process the sensor output and timing information to sample the processing circuitry, and drives a pair of counters for fanfold position indication and consecutive-fault-occurrence determination, dependent on the processing output.

REFERENCES:
patent: 3420149 (1969-01-01), Middleditch et al.
patent: 3553041 (1971-01-01), VON Hofe
patent: 3683757 (1972-08-01), Lenk
patent: 3752026 (1973-08-01), O'Neill
patent: 3833816 (1974-09-01), Emura et al.
patent: 3869965 (1975-03-01), Howatt
patent: 3890221 (1975-06-01), Muehlethaler
patent: 3917142 (1975-11-01), Guarderas
patent: 3982472 (1976-09-01), Howatt

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