US3129587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow sensing device
Assignee: Honeywell Inc
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Filing: 1960-10-11
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Granted: 1964-04-21
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Expires: 1980-10-11
Abstract
No abstract record available.
Inventors
- 👤 Erling C Hallanger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:45
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/70; F24F11/72; F24F11/74; G; G01; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/36; G01F1/38; G01F1/386; G05; G05D; G05D7/00; G05D7/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
211 words
AN APPARATUS ADAPTED T MEASURE THE VELOCITY OF AIR MOVING IN A DUCT, AN AIR FLOW RESTRICTUIN MEANS ADAPTED TO BE PLACED INTO A DUCT WHEREBY SAID RESTRICTION MEANS PARTIALLY RESTRICTS THE FLOW OF AIR THROUGH THE DUCT TO PROVIDE A MEASURABLE PRESSURE DROP, A FIRST AND A SECOND PRESSURE SENSING MEANS, MEANS PIVOTLLY CONNECTING AND SUPPORTING ONE OF SAID SENSING MEANS ON SAID AIR FLOW RESTRICTION MEANS WHREBY SAID SENSING MEANS CAN BE MOVED TO AN ACTIVE POSITION ADJACENT SAID AIR FLOW RESTRICTION MEANS AFTER SAID RESTRICTION MEANS IS MOUNTED IN A DUCT, MEANS CONNECTING THE OTHER OF SAID SENSING MEANS ON SAID AIR FLOW RESTRICTION MEANS, SAID FIRST AND SECOND SENSING MEANS WHEN MOUNTED ON SAID RESTRICTION MEANS FORMING AN ASSEMBLY WITH SAID FIRST SENSING MEANS UPSTREAM SAID RESTRICTION MEANS AND SAID SECOND SENSING MEANS DOWNSTREAM SAID RESTRICTION MEANS, MEANS ADAPTED TO HOLD SAID ASSEMBLY IN THE DUCT, PRESSURE DIFFERENTIAL RESPONSIVE MEANS PROVIDING A SIGNAL INDICATIVE OF THE DIFFERENCE IN PRESSURE BETWEN TWO PRESSURE SOURCES, AND MEANS FOR CONNECTING SAID DIFFERENTIAL RESPONSIVE MEANS TO SAID FIRST AND SECOND SENSING MEANS WHEREBY THE DIFFERENCE BETWEEN THE UPSTREAM AND DOWNSTREAM AIRE PIRESSURES PROVIDES A SIGNAL INDICATIVE OF THE VELOCITY OF THE AIR FLOW IN SAID DUCT AND THROUGH SAID RESTRICTION MEANS.
Claim 2
Independent Claim
211 words
AN APPARATUS ADAPTED T MEASURE THE VELOCITY OF AIR MOVING IN A DUCT, AN AIR FLOW RESTRICTUIN MEANS ADAPTED TO BE PLACED INTO A DUCT WHEREBY SAID RESTRICTION MEANS PARTIALLY RESTRICTS THE FLOW OF AIR THROUGH THE DUCT TO PROVIDE A MEASURABLE PRESSURE DROP, A FIRST AND A SECOND PRESSURE SENSING MEANS, MEANS PIVOTLLY CONNECTING AND SUPPORTING ONE OF SAID SENSING MEANS ON SAID AIR FLOW RESTRICTION MEANS WHREBY SAID SENSING MEANS CAN BE MOVED TO AN ACTIVE POSITION ADJACENT SAID AIR FLOW RESTRICTION MEANS AFTER SAID RESTRICTION MEANS IS MOUNTED IN A DUCT, MEANS CONNECTING THE OTHER OF SAID SENSING MEANS ON SAID AIR FLOW RESTRICTION MEANS, SAID FIRST AND SECOND SENSING MEANS WHEN MOUNTED ON SAID RESTRICTION MEANS FORMING AN ASSEMBLY WITH SAID FIRST SENSING MEANS UPSTREAM SAID RESTRICTION MEANS AND SAID SECOND SENSING MEANS DOWNSTREAM SAID RESTRICTION MEANS, MEANS ADAPTED TO HOLD SAID ASSEMBLY IN THE DUCT, PRESSURE DIFFERENTIAL RESPONSIVE MEANS PROVIDING A SIGNAL INDICATIVE OF THE DIFFERENCE IN PRESSURE BETWEN TWO PRESSURE SOURCES, AND MEANS FOR CONNECTING SAID DIFFERENTIAL RESPONSIVE MEANS TO SAID FIRST AND SECOND SENSING MEANS WHEREBY THE DIFFERENCE BETWEEN THE UPSTREAM AND DOWNSTREAM AIRE PIRESSURES PROVIDES A SIGNAL INDICATIVE OF THE VELOCITY OF THE AIR FLOW IN SAID DUCT AND THROUGH SAID RESTRICTION MEANS.
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |