Apparatus for detecting plural repetitive signals

Details Apparatus for detecting plural repetitive signals Apparatus for detecting plural repetitive signals

1978-03-30

1979-09-04

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

235 92FQ, 235 92SH, 307233R, 340171A, 340517, 364468, 364552, G08B 2300, G06F 704, H03K 2136

Patent

active

041670043

ABSTRACT:
Repetitive defect signals are produced, for example, by bar or rod inspection equipment whenever any one of plural roll sets in a rolling mill develops a roll crack. Defect signal repetitive rate differs for each roll's relative speed. Selective correlator electronics process the defect signals with plural repetitive rates and produce an output signal indicative of which roll set in the mill has a cracked roll.

REFERENCES:
patent: 3551889 (1970-12-01), Miller
patent: 3609683 (1971-09-01), Hoffmanet al.
patent: 3673493 (1972-06-01), Hoffman et al.
patent: 3882545 (1975-05-01), Titus
patent: 3925650 (1975-12-01), Brown
patent: 3927259 (1975-12-01), Brown
patent: 4052700 (1977-10-01), Soobik et al.
patent: 4110725 (1978-08-01), Petrosky

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