Patent US3613449A successfully refreshed from Google Patents.
US3613449A
Expired / Lapsed
US
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Impact flow meter for powdery and granular materials
Assignee: Individual
•
Filing: 1968-08-28
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Granted: 1971-10-19
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Expires: 1988-08-28
Abstract
Abstract AN IMPACT FLOW METER FOR POWDERY AND GRANULAR MATERIALS COMPRISING AN IMPACT-RECEPTIVE DETECTING PLATE FOR RECEIVING A POWDERY OR GRANULAR MATERIAL DROPPED FROM A PREDETERMINED HEIGHT AND A WIPER FOR KEEPING THE PLATE CLEAN AND PREVENTING DEPOSITION OF THE DROPPING MATERIAL, SAID DETECTING PLATE AND SAID WIPER BEING ARRANGED CLOSE TO EACH OTHER AND MADE SYMMETRICALLY OPERABLE WITH RESPECT TO EACH OTHER.
Inventors
- 👤 Tamihiko Soejima
- 👤 Hiroshi Kajiura
- 👤 Kinnosuke Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:30
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/28; G01F1/30
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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |