US3199346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for measuring flow
Assignee: Individual
•
Filing: 1960-01-29
•
Granted: 1965-08-10
•
Expires: 1980-01-29
Abstract
No abstract record available.
Inventors
- 👤 William A Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:02
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/704
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
THE METHOD OF DETERMINING A COMPONENT OF FLUID FLOW VELOCITY OF A FLUID THAT CONTAINS TRACERS WHICH RADIATE LIGHT AND ARE OPTICALLY DISTINGUISHABLE FROM AND RESPONSIVE TO VARIATIONS IN FLUID FLOW COMPRISING: (A) POSITIONING A SENSING DEVICE ADJACENT SAID FLOW THAT IS DISPOSED TO CONTINUOUSLY DETECT THE RADIATED LIGHT OF SAID TRACERS ALONG SAID FLOW; (B) SHIELDING A PREDETERMINED PORTION OF THE RADIATED LIGHT EMITTED BY TRACERS ALONG SAID FLOW THAT IS DETECTABLE BY SAID SENSING DEVICE SO AS TO DEFINE A PREDETERMINED PATH WITHIN SAID FLOW WHEREIN SAID DEVICE MAY CONTINUOUSLY DETECT THE RADIATED LIGHT OF INDIVIDUAL TRACERS WITHIN SAID FLOW; AND (C) DETERMINING THE TIME PERIOD FOR INDIVIDUAL TRACERS TO TRAVERSE SAID PREDETERMINED PATH BY MEASURING THE TIME PERIOD WHICH SAID SENSING DEVICE DETECTS SAID INDIVIDUAL TRACER.
Claim 2
Independent Claim
129 words
THE METHOD OF DETERMINING A COMPONENT OF FLUID FLOW VELOCITY OF A FLUID THAT CONTAINS TRACERS WHICH RADIATE LIGHT AND ARE OPTICALLY DISTINGUISHABLE FROM AND RESPONSIVE TO VARIATIONS IN FLUID FLOW COMPRISING: (A) POSITIONING A SENSING DEVICE ADJACENT SAID FLOW THAT IS DISPOSED TO CONTINUOUSLY DETECT THE RADIATED LIGHT OF SAID TRACERS ALONG SAID FLOW; (B) SHIELDING A PREDETERMINED PORTION OF THE RADIATED LIGHT EMITTED BY TRACERS ALONG SAID FLOW THAT IS DETECTABLE BY SAID SENSING DEVICE SO AS TO DEFINE A PREDETERMINED PATH WITHIN SAID FLOW WHEREIN SAID DEVICE MAY CONTINUOUSLY DETECT THE RADIATED LIGHT OF INDIVIDUAL TRACERS WITHIN SAID FLOW; AND (C) DETERMINING THE TIME PERIOD FOR INDIVIDUAL TRACERS TO TRAVERSE SAID PREDETERMINED PATH BY MEASURING THE TIME PERIOD WHICH SAID SENSING DEVICE DETECTS SAID INDIVIDUAL TRACER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |