US3314733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic conveying apparatus
Assignee: Delta Southern Co
•
Filing: 1964-12-30
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Granted: 1967-04-18
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Expires: 1984-12-30
Abstract
No abstract record available.
Inventors
- 👤 James A Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:27
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/04; B65G53/06; B65G53/08; B65G45/00; B65G45/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PULVERULENT MATERIAL CONVEYING DEVICE COMPRISING A DISCHARGE BOX HAVING A PAIR OF PRESSURIZED GAS INLETS AND A DISCHARGED OUTLET, A GAS PERMEABLE DECK IN SAID BOX SEPARATING SAID BOX INTO A PRESSURE CHAMBER AND A PLENUM CHAMBER, ONE OF SAID INLETS COMMUNICATING WITH EACH OF SAID CHAMBERS, SAID DISCHARGE OUTLET COMMUNICATING WITH SAID PRESSURE CHAMBER, MEANS FOR MAINTAINING A POSITIVE PRESSURE DIFFERENTIAL ACROSS SAID DECK, FEED SCREW MEANS,
Claim 2
Dependent Claim
69 words
A PULVERULENT MATERIAL CONVEYING DEVICE COMPRISING A DISCHARGE BOX HAVING A PAIR OF PRESSURIZED GAS INLETS AND A DISCHARGED OUTLET, A GAS PERMEABLE DECK IN SAID BOX SEPARATING SAID BOX INTO A PRESSURE CHAMBER AND A PLENUM CHAMBER, ONE OF SAID INLETS COMMUNICATING WITH EACH OF SAID CHAMBERS, SAID DISCHARGE OUTLET COMMUNICATING WITH SAID PRESSURE CHAMBER, MEANS FOR MAINTAINING A POSITIVE PRESSURE DIFFERENTIAL ACROSS SAID DECK, FEED SCREW MEANS,
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |