Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1983-12-28
1986-08-19
Crosland, Donnie L.
Communications: electrical
Condition responsive indicating system
With particular system function
340506, 340507, 340511, 340562, 34082506, 53 77, 493 10, 493 30, 493 31, 493 37, G08B 2900, G05B 2302
Patent
active
046072527
ABSTRACT:
A system for monitoring the operation of an input transducer of a central control unit for machines employed in production and product packaging lines, the system having a first circuit for detecting operating defects of the input transducer including a first subcircuit for producing a change in the operating condition of the transducer to produce a corresponding change in the logic signal of the transducer, and a second subcircuit for detecting the change in the logic signal and operating a control alarm based upon the detected change in the logic signal, the system also including a second circuit for providing a signal from the transducer to the central control and monitoring unit based upon the operating condition of the transducer.
REFERENCES:
patent: 3638191 (1972-01-01), Mann
patent: 3870948 (1975-03-01), Holt et al.
patent: 4280164 (1981-07-01), Kozek
patent: 4363030 (1982-12-01), Maltby et al.
patent: 4441302 (1984-04-01), Gabbitas et al.
G.D. Societa Per Azioni, bulletin titled "Machine with Controller", 1985, 3 pages.
G.D. Societa Per Azioni, bulletin titled G.D. X1 Roll, 1985.
Fairchild Camera Corp., bulletin titled Semiconductor Circuit Application, Aug. 1978--pp. 3 and 73.
Crosland Donnie L.
G.D. Societa 'per Azioni
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