Kenneth E Elliott

US Patent:

43319246, May 25, 1982

Filed:

May 19, 1980

Appl. No.:

6/151285

Inventors:

Kenneth D. Elliott - Cincinnati OH
Peter F. Elliott - Houston TX

International Classification:

H03B 1900
H03K 500

US Classification:

328 38

Abstract:

Pulse rate multiplying circuitry is responsive to an input pulse train for generating an output pulse train having a number of pulses which is a selected multiple of the number of pulses in the input pulse train. That is, the pulse rate multiplying circuitry produces exactly a selected multiple of output pulses for each input pulse so that the frequency of the output pulse train is the selected multiple of the frequency of the input pulse train. Preferably, the pulses in the output pulse train are uniformly distributed in time. That is, the output pulses generated in response to each input pulse are equally spaced and evenly distributed over the time interval between consecutive input pulses. The pulse rate multiplying circuitry includes an up/down counter incremented by pulses in the input pulse train. The up/down counter is decremented by feedback pulses generated by a feedback circuit including a digital/analog converter, a voltage controlled oscillator controlled by a counter empty detect circuit, and a divide-by-N circuit arranged in a frequency locked loop with the up/down counter.

US Patent:

41060997, Aug 8, 1978

Filed:

Jul 8, 1977

Appl. No.:

5/814132

Inventors:

Peter F. Elliott - Cincinnati OH
Kenneth D. Elliott - Cincinnati OH

International Classification:

G01M 328
G01F 100
G06F 1546

US Classification:

364510

Abstract:

A monitor is disclosed which indicates a series of short-term losses of fluid between any two stations along a fluid flow system such as a refinery or pipeline. The series of short-term losses relates to a chain of intervals of operation of the fluid flow system. A sudden disturbance in the operation of the fluid flow system during an interval of operation is smoothed over a selectively variable number of short-term loss indications in the series rather than being reflected entirely in the short-term loss indication for the interval of operation in which the sudden disturbance occurs. On the other hand, actual changes in the operation of the fluid flow system are averaged over the selectively variable number of short-term loss indications in the series so that rapid changes as well as gradual changes in the operation of the fluid flow system result in a trend in the series of short-term loss indications. This permits personnel to reliably monitor the fluid flow system and, therefore, facilitates adjustment of the operation or repair of the fluid flow system only when it is actually needed. The monitor also provides an overall loss indication based on the total amount of fluid input to and output from the fluid flow system for a period in the operation of the fluid flow system the minimum duration of which is longer than a predetermined time delay.

US Patent:

41124944, Sep 5, 1978

Filed:

Jul 12, 1976

Appl. No.:

5/704538

Inventors:

Peter Elliott - Cincinnati OH
Kenneth Elliott - Cincinnati OH

International Classification:

G01M 328
G01F 100
G06F 1546

US Classification:

364510

Abstract:

A system is disclosed which indicates a series of intermittent losses of fluid between any two stations along a fluid flow system such as a refinery or pipeline. The series of intermittent losses relates to a chain of intervals of operation of the fluid flow system. A sudden disturbance in the operation of the fluid flow system during an interval of operation is smoothed over a selectively variable number of intermittent loss indications in the series rather than reflected entirely in the intermittent loss indication for the interval of operation in which the sudden disturbance occurs. On the other hand, actual changes in the operation of the fluid flow system are averaged over the selectively variable number of intermittent loss indications in the series so that rapid changes as well as gradual changes in the operation of the fluid flow system result in a trend in the series of intermittent losses. This permits personnel to reliably monitor the fluid flow system and, therefore, facilitates repair or adjustment of the operation of the fluid flow system only when it is needed. The system also provides an overall loss indication for a period in the operation of the fluid flow system based on the total amount of fluid input to and output from the fluid flow system.