Patent US3564915A successfully refreshed from Google Patents.
US3564915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current meter or flow meter
Assignee: Yokogawa Electric Corp
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Filing: 1968-09-18
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Granted: 1971-02-23
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Expires: 1988-09-18
Abstract
Abstract A CURRENT METER OF FLOW METER HAVING A ROD-SHAPED MEMBER HAVING BORED THERETHROUGH A TRANSVERSE BORE FOR PRODUCING THE KARMAN VORTICES WHEN IMMERSED IN A FLUID STREAM, THE PORTS OF THE TRANSVERSE BORE OPENING OUT IN THE VICINITY OF THE SEPARATION POINT OF THE BOUNDARY LAYERS OF THE FLUID FROM THE ROD-SHAPED MEMBER, AND A SENSING ELEMENT DISPOSED IN THE TRANSVERSE BORE FOR SDETECTING THE NUMBER OF DISPLACEMENTS OF THE FLUID FLOWING THROUGH THE TRANSVERSE BORE.
Inventors
- 👤 Miyaji Tomota
- 👤 Hiroo Yamasaki
- 👤 Yoshio Kurita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:35
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/32; G01F1/325
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |