Patent US3261415A successfully refreshed from Google Patents.
US3261415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry solids feeder
Assignee: North American Aviation Corp
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Filing: 1964-04-02
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Granted: 1966-07-19
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Expires: 1984-04-02
Abstract
No abstract record available.
Inventors
- 👤 George A Hood
- 👤 John J Vrolyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:17
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J8/0035; B01J8/08; B01J8/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
DEVICE FOR FEEDING MATERIALS COMPRISING: A FEED HOPPER HAVING A VALVE AFFIXED TO THE BOTTOM OUTLET THEREOF, A FIRST HOUSING FIXEDLY SECURED BELOW SAID FEED HOPPER, A WEIGHT HOPPER DISPOSED IN SAID HOUSING, SAID HOPPER HAVING A VALVE AT THE BOTTOM THEREOF, A DISTRIBUTION HOPPER DISPOSED BELOW SAID FIRST HOUSING, A SECOND HOUSING FIXEDLY SECURED HORIZONTALLY ADJACENT SAID FIRST HOUSING, FLEXIBLE MEANS SEPARATING SAID FIRST HOUSING FROM SAID FEED HOPPER, SAID SECOND HOUSING AND SAID DISTRIBUTION HOPPER, MENS FOR SUPPORTING SAID WIEGH HOPPER EXTENDING FROM SAID FIRST TO SAID SECOND HOUSING AND BEING RIGIDLY AFFIXED TO SAID SECOND HOUSING, MEANS FOR VIBRATING SIAD FEED AND DISTRIBUTION HOPPERS, MEANS FOR ADMITTING AN INERT GAS TO SAID SECOND HOUSING, MEANS CONNECTED TO SAID HOPPER SUPPORT MEANS FOR WEIGHING AN INCREMENT OF MATERIAL, AND MEANS FOR OPENING AND CLOSING SAID VALVES RESPONSIVE TO SAID WEIGHING MEANS.
Claim 2
Dependent Claim
143 words
DEVICE FOR FEEDING MATERIALS COMPRISING: A FEED HOPPER HAVING A VALVE AFFIXED TO THE BOTTOM OUTLET THEREOF, A FIRST HOUSING FIXEDLY SECURED BELOW SAID FEED HOPPER, A WEIGHT HOPPER DISPOSED IN SAID HOUSING, SAID HOPPER HAVING A VALVE AT THE BOTTOM THEREOF, A DISTRIBUTION HOPPER DISPOSED BELOW SAID FIRST HOUSING, A SECOND HOUSING FIXEDLY SECURED HORIZONTALLY ADJACENT SAID FIRST HOUSING, FLEXIBLE MEANS SEPARATING SAID FIRST HOUSING FROM SAID FEED HOPPER, SAID SECOND HOUSING AND SAID DISTRIBUTION HOPPER, MENS FOR SUPPORTING SAID WIEGH HOPPER EXTENDING FROM SAID FIRST TO SAID SECOND HOUSING AND BEING RIGIDLY AFFIXED TO SAID SECOND HOUSING, MEANS FOR VIBRATING SIAD FEED AND DISTRIBUTION HOPPERS, MEANS FOR ADMITTING AN INERT GAS TO SAID SECOND HOUSING, MEANS CONNECTED TO SAID HOPPER SUPPORT MEANS FOR WEIGHING AN INCREMENT OF MATERIAL, AND MEANS FOR OPENING AND CLOSING SAID VALVES RESPONSIVE TO SAID WEIGHING MEANS.
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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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |