Patent US3273375A successfully refreshed from Google Patents.
US3273375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow meter calibrating barrel
Assignee: HALMOR IND Inc
•
Filing: 1964-11-24
•
Granted: 1966-09-20
•
Expires: 1984-11-24
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Howe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:40
CPC Classifications
G; G01; G01F; G01F25/00; G01F25/10; G01F25/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A CALIBRATING BARREL COMPRISING: AN OUTER TUBULAR HOUSING CLOSED AT EACH END; A REDUCED DIAMETER AND LENGTH INNER TUBULAR BARREL SUPPORTED WITHIN THE HOUSING PROVIDING AN ANNULUS BETWEEN THE EXTERIOR OF THE BARREL AND THE INTERIOR OF THE HOUSING; A WALL PARTITIONING THE ANNULUS INTO TWO LONGITUDINAL PORTIONS, THE HOUSING HAVING FLUID PORTS THEREIN COMMUNICATING WITH EACH ANNULUS PORTION WHEREIN FLUID FLOWING INTO ONE PORT FLOWS WITHIN ONE ANNULUS PORTION, THROUGH THE BARREL, THROUGH THE OTHER ANNULUS PORTION AND OUT THE OTHER PORT; A FREE PORTION IN THE BARREL; AND
Claim 2
Dependent Claim
90 words
A CALIBRATING BARREL COMPRISING: AN OUTER TUBULAR HOUSING CLOSED AT EACH END; A REDUCED DIAMETER AND LENGTH INNER TUBULAR BARREL SUPPORTED WITHIN THE HOUSING PROVIDING AN ANNULUS BETWEEN THE EXTERIOR OF THE BARREL AND THE INTERIOR OF THE HOUSING; A WALL PARTITIONING THE ANNULUS INTO TWO LONGITUDINAL PORTIONS, THE HOUSING HAVING FLUID PORTS THEREIN COMMUNICATING WITH EACH ANNULUS PORTION WHEREIN FLUID FLOWING INTO ONE PORT FLOWS WITHIN ONE ANNULUS PORTION, THROUGH THE BARREL, THROUGH THE OTHER ANNULUS PORTION AND OUT THE OTHER PORT; A FREE PORTION IN THE BARREL; AND
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |