US3103119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass flowmeter
Assignee: NAT INSTR LAB Inc
•
Filing: 1959-03-24
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Granted: 1963-09-10
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Expires: 1979-03-24
Abstract
No abstract record available.
Inventors
- 👤 Dale I Steele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:12
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/76; G01F1/86; G01F1/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
AN INSTRUMENT FOR MEASURING MASS FLOW THROUGH A CLOSED CONDUIT WHICH COMPRISES: A PLATE MEMBER DISPOSED TRANSVERSELY ACROSS THE FLOW PATH, SAID PLATE MEMBER HAVING AN OPENING THEREIN THROUGH WHICH THE FLOWING FLUID PASSES; A SHAPED PLUG DISPOSED CENTRALLY OF THE OPENING TO FORM AN ANNULAR ORIFICE BETWEEN THE PLATE OPENING AND THE PLUG, SAID PLUG EXTENDING DOWNSTREAM FROM A TERMINATION POINT LOCATED IN THE REGION OF SAID OPENING AND BEING MOUNTED DOWNSTREAM OF SAID OPENING; A CLOSED FLUID FILLED PRESSURE AND TEMPERATURE RESPONSIVE DOUBLE BELLOWS MEMBER ANNULARLY DISPOSED AROUND THE PLUG MEMBER AND SECURED TO ONE OF THE NAMED MEMBERS FORMING SAID ANNULAR ORIFICE TO CAUSE MOVEMENT THEREOF RELATIVE TO THE
Claim 2
Dependent Claim
112 words
AN INSTRUMENT FOR MEASURING MASS FLOW THROUGH A CLOSED CONDUIT WHICH COMPRISES: A PLATE MEMBER DISPOSED TRANSVERSELY ACROSS THE FLOW PATH, SAID PLATE MEMBER HAVING AN OPENING THEREIN THROUGH WHICH THE FLOWING FLUID PASSES; A SHAPED PLUG DISPOSED CENTRALLY OF THE OPENING TO FORM AN ANNULAR ORIFICE BETWEEN THE PLATE OPENING AND THE PLUG, SAID PLUG EXTENDING DOWNSTREAM FROM A TERMINATION POINT LOCATED IN THE REGION OF SAID OPENING AND BEING MOUNTED DOWNSTREAM OF SAID OPENING; A CLOSED FLUID FILLED PRESSURE AND TEMPERATURE RESPONSIVE DOUBLE BELLOWS MEMBER ANNULARLY DISPOSED AROUND THE PLUG MEMBER AND SECURED TO ONE OF THE NAMED MEMBERS FORMING SAID ANNULAR ORIFICE TO CAUSE MOVEMENT THEREOF RELATIVE TO THE
References Cited (Backward Citations)
US1416220A
Cited
US1635040A
Cited
US2675020A
Cited
US2858700A
Cited
US2780938A
Cited
US2816441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |