Patent US3225398A successfully refreshed from Google Patents.
US3225398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bottom pour furnace
Assignee: United Kingdom Atomic Energy Authority
•
Filing: 1961-12-14
•
Granted: 1965-12-28
•
Expires: 1981-12-14
Abstract
No abstract record available.
Inventors
- 👤 Davey Norman
- 👤 Aldersley Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:05
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/15; F27D3/1509; B; B22; B22D; B22D41/00; B22D41/14; B22D41/22; B22D41/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A BOTTOM POURING FURNACE, COMPRISING A CHARGE CONTAINER WITH A POURING OPENING IN ITS BASE, A SUPPORT PAD FOR THE CHARGE CONTAINER, SAID PAD HAVING A POURING OPENING, THE CHARGE CONTAINER AND THE SUPPORT PAD BEING MOVABLE RELATIVE TO EACH OTHER SO AS TO BRING THEIR POURING OPENINGS INTO AND OUT OF ALIGNMENT, SAID CHARGE CONTAINER HAVING A SMOOTH-SURFACED LOWER BASE, SAID SUPPORT PAD HAVING A CORRESPONDING SMOOTH SURFACE, WHEREBY THE WEIGHT OF MATERIAL IN SAID CHARGE CONTAINER FORCES SAID TWO SURFACES INTO SEALING ENGAGEMENT.
Claim 2
Dependent Claim
85 words
A BOTTOM POURING FURNACE, COMPRISING A CHARGE CONTAINER WITH A POURING OPENING IN ITS BASE, A SUPPORT PAD FOR THE CHARGE CONTAINER, SAID PAD HAVING A POURING OPENING, THE CHARGE CONTAINER AND THE SUPPORT PAD BEING MOVABLE RELATIVE TO EACH OTHER SO AS TO BRING THEIR POURING OPENINGS INTO AND OUT OF ALIGNMENT, SAID CHARGE CONTAINER HAVING A SMOOTH-SURFACED LOWER BASE, SAID SUPPORT PAD HAVING A CORRESPONDING SMOOTH SURFACE, WHEREBY THE WEIGHT OF MATERIAL IN SAID CHARGE CONTAINER FORCES SAID TWO SURFACES INTO SEALING ENGAGEMENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |