US3776034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for measuring fluid flow in units of mass
Assignee: Shell USA Inc
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Filing: 1971-04-13
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Granted: 1973-12-04
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Expires: 1991-04-13
Abstract
Abstract A method and apparatus for simultaneously measuring the volume and the density of a fluid stream and totalizing the product of the two measurements to provide the mass units of fluid delivered by the stream. The apparatus also includes means to accommodate zero suppression of the density measurements so that the final product is a numerical indication of the actual number of mass units delivered.
Inventors
- 👤 R Kolb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:32
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/76; G01F1/86; G01F1/90
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
144 words
A method for computing the total mass units of a fluid delivered by a flowing stream, said method comprising: measuring the volume of the fluid delivered and producing a first signal each time a predetermined volume is delivered; measuring the density of the fluid delivered and converting the measurement to a second signal whose duration is related to the density of the fluid delivered; determining the density of the fluid delivered that produces a zero time duration of said second signal by producing a third signal related to the density that produces a zero time duration signal; obtaining the product of the first and second signals and adding said products to obtain a numerical indication of the number of mass units delivered; and obtaining a second product of said first and third signals and combining additively said first mentioned product and said second product.
Claim 2
Independent Claim
144 words
A method for computing the total mass units of a fluid delivered by a flowing stream, said method comprising: measuring the volume of the fluid delivered and producing a first signal each time a predetermined volume is delivered; measuring the density of the fluid delivered and converting the measurement to a second signal whose duration is related to the density of the fluid delivered; determining the density of the fluid delivered that produces a zero time duration of said second signal by producing a third signal related to the density that produces a zero time duration signal; obtaining the product of the first and second signals and adding said products to obtain a numerical indication of the number of mass units delivered; and obtaining a second product of said first and third signals and combining additively said first mentioned product and said second product.
Claim 3
Dependent Claim
47 words
The method of claim 1 wherein the measured volume is converted to a series of pulses, each pulse representing the delivery of a predetermined volume of fluid, said pulses being combined with said second signal to obtain the numerical indication of the number of mass units delivered.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |