US3606481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder feeding assembly
Assignee: Sealectro Corp
•
Filing: 1969-10-22
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Granted: 1971-09-20
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Expires: 1989-10-22
Abstract
Abstract A POWDER FEED ASSEMBLY HAVING A HOUSING PROVIDED WITH A POWDER RESERVOIR AND A POWDER FLUIDIZING CHAMBER. THE RESERVOIR HAS A SUMP AT ITS LOWER END AND A CONVEYOR IN THE SUMP TO DELIVER POWDER TO THE FLUIDIZING CHAMBER. A CONDUIT DELIVERS A CARRIER GAS UNDER PRESSURE TO THE CHAMBER. ANOTHER CONDUIT CONNECTS THE CHAMBER WITH THE RESERVOIR TO EQUALIZE THE PRESSURE THEREIN AND VALVE MEANS CAN VARY THE PRESSURE. THERE IS ALSO A VALVE FOR RAPIDLY VENTING PRESSURE IN THE CHAMBER INTERMITTENTLY AND A DELIVERY CONDUIT FROM ITS CHAMBER FOR THE FLUIDIZED POWDER.
Inventors
- 👤 Mille Stand
- 👤 Albert H Streicher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:06
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B7/144; C; C23; C23C; C23C4/00; C23C4/12
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |