US4095476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single scale U-type manometer
Assignee: INDUSTRIELLE D ETUDES ET DE REALISATIONS SCIENTIFIQUES Ste
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Filing: 1977-02-23
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Granted: 1978-06-20
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Expires: 1997-02-23
Abstract
Abstract A U-type manometer particularly designed for use in measuring the height ofiquids of different densities held in containers which features a calibrated measuring tube, a reservoir of manometric liquid connected to the lower end of the calibrated measuring tube, a piston having an aperture therein defining two communicating chambers in the reservoir, the aperture in the piston being at a height substantially equal to the zero level of the manometric liquid in the calibrated measuring tube, a connection between the enclosure containing the liquid whose height is to be measured and the reservoir and means for moving the piston within the reservoir.
Inventors
- 👤 Gabriel Banon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:11
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/16; G01F23/162; G01L; G01L7/00; G01L7/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
123 words
A U-type manometer, particularly for use in measuring the height of liquids of different densities held in containers, such as ballast-tanks or storage tanks, comprising a calibrated measuring tube, a graduated scale, a reservoir of manometric liquid communicating with said measuring tube, a connection between the enclosure containing the liquid whose height is to be measured and said reservoir, a piston sealingly mounted in said reservoir so as to define two chambers therein, communicating by an aperture in the piston disposed at a height substantially equal to the zero level of the manometric liquid, and means for moving the piston horizontally within the reservoir for correcting the density of the liquid to be measured by varying the effective area of the manometric liquid.
Claim 2
Dependent Claim
123 words
A U-type manometer, particularly for use in measuring the height of liquids of different densities held in containers, such as ballast-tanks or storage tanks, comprising a calibrated measuring tube, a graduated scale, a reservoir of manometric liquid communicating with said measuring tube, a connection between the enclosure containing the liquid whose height is to be measured and said reservoir, a piston sealingly mounted in said reservoir so as to define two chambers therein, communicating by an aperture in the piston disposed at a height substantially equal to the zero level of the manometric liquid, and means for moving the piston horizontally within the reservoir for correcting the density of the liquid to be measured by varying the effective area of the manometric liquid.
Claim 3
Dependent Claim
29 words
A manometer according to claim 1, wherein the lower edge of said aperture in the piston is at a height slightly above the zero level of the manometric liquid.
Claim 4
Dependent Claim
48 words
A manometer according to claim 1, wherein said piston is integral with a rod having a threaded portion engaging with a tapped element rotatably mounted about said rod but translationally connected therewith, a knurled nut being fixed on the end of the tapped element distant from the piston.
References Cited (Backward Citations)
US2423394A
Cited
US3023622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |