Patent US3654458A successfully refreshed from Google Patents.
US3654458A
Expired / Lapsed
US
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Means for detection and control of liquid level in a vessel
Assignee: Cameron Solutions Inc
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Filing: 1969-01-06
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Granted: 1972-04-04
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Expires: 1989-01-06
Abstract
Abstract A vessel has a source and detectors of radiation emplaced within containers extended through its walls so the level of a fluid within the vessel will be detected by interference of the fluid with the reception of the radiation by the detectors.
Inventors
- 👤 Bill S Burrus
- 👤 John B Rosso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:23
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/284; G01F23/288; G01F23/2885
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
187 words
A level detector system for a vessel containing fluid, including, a first container arranged to extend through a section of the vessel wall and having its interior accessible from the exterior of the vessel, a source of radiation mounted within the first container, a second container arranged to extend through a section of the vessel walls so that its external surface intersects the level of fluid within the vessel and its interior is accessible from exterior of the vessel, a detecTor of the radiation of the source mounted within the second container at a position where the radiation will be at least partially shielded by the fluid within the vessel at a predetermined level of the fluid in the vessel so that the detector responds to the radiation of the source to indicate the level of the fluid in the vessel, and the second container arranged so that its interior is exposed at each end to the ambient fluids of the environment which is external to the system to cause convection currents of said fluids through the length of the second container for cooling the radiation detector.
Claim 2
Dependent Claim
187 words
A level detector system for a vessel containing fluid, including, a first container arranged to extend through a section of the vessel wall and having its interior accessible from the exterior of the vessel, a source of radiation mounted within the first container, a second container arranged to extend through a section of the vessel walls so that its external surface intersects the level of fluid within the vessel and its interior is accessible from exterior of the vessel, a detecTor of the radiation of the source mounted within the second container at a position where the radiation will be at least partially shielded by the fluid within the vessel at a predetermined level of the fluid in the vessel so that the detector responds to the radiation of the source to indicate the level of the fluid in the vessel, and the second container arranged so that its interior is exposed at each end to the ambient fluids of the environment which is external to the system to cause convection currents of said fluids through the length of the second container for cooling the radiation detector.
Claim 3
Dependent Claim
71 words
The system of claim 1 in which, the detector of the radiation mounted within the second container consists of a plurality of detectors spaced in linear relation to one another and at a predetermined distance one from another, and in which circuits responsive to the electrical energy generated by the detectors in response to the radiation received are provided to indicate the change of the level of fluids in the vessel.
Claim 4
Dependent Claim
41 words
The system of claim 1 including, a selected protective material within the first container and disposed about the radiation source assembly as protection from the deleterious effects thereupon of the ambient fluids of the environment which is external to the system.
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |