Title: Apparatus for the detection of vibration in rotating machinery

Abstract: A transducer generates a signal whose amplitude corresponds to the vibration amplitude of a machine under test. The output of the transducer is passed to a comparator which gives a logic 1 output when the transducer output signal lies outside an acceptable range, and a logic 0 output when it falls within the range. If a logic 1 output occurs, the length of time for which it persists is measured and, if it persists for greater than a preset time, an alarm is actuated.

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Inventors: Birchall, Donald Jack

Application Number: 575312
Filing Date: 1975-05-07
Publication_date: 1976-09-07
Assignee:
Primary Class(es): 340/529 73/660, 307/117, 340/683, 361/170
Other Classes:
US Patent Ref:

3201776	Aug, 1965	Morrow et al.	340/261.
3455148	Jul, 1969	Foster et al.	340/261.
3550018	Dec, 1970	James et al.	328/127.
3579220	May, 1971	Stevenso, Jr.	340/261.
3913085	Oct, 1975	Farstad	340/261.
3922663	Nov, 1975	Lubke et al.	340/261.

Other Refs:
Primary Examiner: Swann, III, Glen R.
Assistant Examiner:
Attorney: Seidel, Gonda & Goldhammer