Patent US4279705A successfully refreshed from Google Patents.
US2995504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material handling plant
Assignee: Babcock International Ltd
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Filing: 1957-02-11
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Granted: 1961-08-08
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Expires: 1977-02-11
Abstract
No abstract record available.
Inventors
- 👤 Richard A Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:53
CPC Classifications
G; G21; G21C; G21C19/00; G21C19/32; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
GRAVITY CHUTE CONVEYING MEANS FOR THE SAFE TRANSPORT OF USED NUCLEAR FUEL ELEMENTS FROM AN UPPER LEVEL TO A LOWER LEVEL COMPRISING AN UPPER END OF THE CHUTE ARRANGED AT THE UPPER LEVEL, A DISCHARGE END OF THE CHUTE ARRANGED AT THE LOWER LEVEL, AN INITIAL PART OF THE CHUTE HAVING A STEEP INCLINATION IN WHICH THE FUEL ELEMENTS ARE CAPABLE OF RAPID DESCENT UNDER THE INFLUENCE OF GRAVITY, A NOZZLE ARRANGED TO DISCHARGE A JET OF WATER UPWARDLY INTO THE INITIAL PART OF THE CHUTE TOWARDS THE UPPER LEVEL IN SUCH A MANNER AS TO EFFECT BRAKING OF THE DESCENDING FUEL ELEMENTS, A TERMINAL PART OF THE CHUTE WHICH IS HORIZONTAL OR SUBSTANTIALLY HORIZONTAL AND IN WHICH THE FUEL ELEMENTS ARE SUBJECT TO FRICTIONAL BRAKING, SO THAT AT LEAST SOME OF THE FUEL ELEMENTS WOULD BE BROUGHT TO REST IN THAT TERMINAL PART, AND AT LEAST ONE NOZZLE ARRANGED TO DISCHARGE A JET OF WATER INTO THE TERMINAL PART OF THE CHUTE IN THE DIRECTION
Claim 2
Dependent Claim
166 words
GRAVITY CHUTE CONVEYING MEANS FOR THE SAFE TRANSPORT OF USED NUCLEAR FUEL ELEMENTS FROM AN UPPER LEVEL TO A LOWER LEVEL COMPRISING AN UPPER END OF THE CHUTE ARRANGED AT THE UPPER LEVEL, A DISCHARGE END OF THE CHUTE ARRANGED AT THE LOWER LEVEL, AN INITIAL PART OF THE CHUTE HAVING A STEEP INCLINATION IN WHICH THE FUEL ELEMENTS ARE CAPABLE OF RAPID DESCENT UNDER THE INFLUENCE OF GRAVITY, A NOZZLE ARRANGED TO DISCHARGE A JET OF WATER UPWARDLY INTO THE INITIAL PART OF THE CHUTE TOWARDS THE UPPER LEVEL IN SUCH A MANNER AS TO EFFECT BRAKING OF THE DESCENDING FUEL ELEMENTS, A TERMINAL PART OF THE CHUTE WHICH IS HORIZONTAL OR SUBSTANTIALLY HORIZONTAL AND IN WHICH THE FUEL ELEMENTS ARE SUBJECT TO FRICTIONAL BRAKING, SO THAT AT LEAST SOME OF THE FUEL ELEMENTS WOULD BE BROUGHT TO REST IN THAT TERMINAL PART, AND AT LEAST ONE NOZZLE ARRANGED TO DISCHARGE A JET OF WATER INTO THE TERMINAL PART OF THE CHUTE IN THE DIRECTION
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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) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |