US3554609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic outlet for a hopper
Assignee: ACF Industries Inc
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Filing: 1968-08-26
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Granted: 1971-01-12
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Expires: 1988-08-26
Abstract
Abstract THE OUTLET OF A HOPPER HAS A ROTARY VALVE TUBE PROVIDED WITH AN ADAPTOR AT EACH END OF THE HOPPER. THE ADAPTOR HAS A BLUSHING IN WHICH TEH VALVE TUBE ROTATES, AND EACH ADAPTOR HAS AN EXTERNAL GROOVE IN WHICH AN END CLOSURE CAP MAY BE LOCKED. THE ROTARY TUBE HAS GROOVES IN WHICH THE COUPLER OF A MATERIAL DISCHARGE HOSE MAY BE LOCKED. SEALS ARE PROVIDED TO PREVENT AIR LEAKAGE WHEN EITHER THE END CAP OR THE DISCHARGE TUBE IS CONNECTED. THE COUPLER HAS HANDELS FOR ROTATING THE TUBE TO OPEN OR CLOSE THE VALVE.
Inventors
- 👤 Dallas W Rollins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:46
CPC Classifications
B; B61; B61D; B61D5/00; B61D5/002; B61D5/004; B65; B65G; B65G53/00; B65G53/34; B65G53/40; B65G53/46
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |