Boots – shoes – and leggings
Patent
1977-07-08
1978-08-08
Wise, Edward J.
Boots, shoes, and leggings
73 405R, 235 92PD, 235 92FL, 364500, G01M 328, G01F 100, G06F 1546
Patent
active
041060997
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. The monitor can determine the end of the overall loss indication period by detecting when the status of operation of the fluid flow system returns to the status which existed at the start of the predetermined time delay.
REFERENCES:
patent: 3505513 (1968-05-01), Fowler et al.
patent: 3690150 (1972-09-01), Mullen
patent: 3723987 (1973-03-01), Barone, Jr. et al.
patent: 3909596 (1975-09-01), Sullivan
patent: 3952759 (1976-04-01), Ottenstein
patent: 3987662 (1976-10-01), Hara et al.
Elliott Kenneth D.
Elliott Peter F.
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