US3252187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molten metal dispensing apparatus
Assignee: Dow Chemical Co
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Filing: 1963-05-29
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Granted: 1966-05-24
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Expires: 1983-05-29
Abstract
No abstract record available.
Inventors
- 👤 Francis L Burkett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:18
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/20; B22D17/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
AN APPARATUS FOR THE DELIVERY OF MOLTEN METAL TO A UTILIZATION DEVICE WHICH COMPRISES A SUBMERSIBLE INTEGRATED PUMP-VALVE UNIT HAVING A PUMP ASSEMBLY PORTION, SAID PUMP ASSEMBLY PORTIONINCLUDING A DRIVE SHAFT HAVING AN UPPER END AND A LOWER END, AN IMPELLER, SAID IMPELLER HAVING THE SAME LONGITUDINAL AZIS AS SAID DRIVE SHAFT AND BEING COUPLED TO SAID DRIVE SHAFT, A PUMP CASING HAVING A TOP SECTION, BOTTOM SECTION, AND SIDE WALLS, SAID CASING SURROUNDING SAID IMPELLER AND HAVING SUFFICIENT DEPTH TO PERMIT SUBSTANTIAL VERTICAL MOVEMENT OF THE IMPELLER IN CONJUNCTION IWHT THE DRIVE SHAFT, SAID CASING HAVING AN INLET BORE MEANS IN SAID TOP SECTION, SAID DRIVE SHAFT EXTENDING THROUGH SAID INLET BORE, AND AN OUTLET BORE EXTENDING THROUGH SAID SIDE WALL, A VALVE ASSEMBLY PART, SAID VALVE ASSEMBLY PART INCLUDING A VALVE SEAT DISPOSED IN SAID INLET BORE AND A VALVE HEAD, SAID VALVE HEAD SURROUNDING AND BEING RIGIDLY COUPLED TO SAID DRIVE SHAFT; SUPPORTING MEANS TO SUSPEND THE APARATUS IN THE MOLTEN METAL TO BE DIPENSED; POWERING MEANS TO PROVIDE ROTARY POWER FOR THE PUMP PORTION; CTUATING MEANS FOR RAISING AND LOWERING SAID DRIVE SHAFT WHEREBY SAID VALVE ASSEMBLY PORTION IS OPENED AND CLOSED; AND A DELIVERY PIPE ATTACHED TO THE PUMP CASING AT SAID OUTLET BORE.
Claim 2
Independent Claim
209 words
AN APPARATUS FOR THE DELIVERY OF MOLTEN METAL TO A UTILIZATION DEVICE WHICH COMPRISES A SUBMERSIBLE INTEGRATED PUMP-VALVE UNIT HAVING A PUMP ASSEMBLY PORTION, SAID PUMP ASSEMBLY PORTIONINCLUDING A DRIVE SHAFT HAVING AN UPPER END AND A LOWER END, AN IMPELLER, SAID IMPELLER HAVING THE SAME LONGITUDINAL AZIS AS SAID DRIVE SHAFT AND BEING COUPLED TO SAID DRIVE SHAFT, A PUMP CASING HAVING A TOP SECTION, BOTTOM SECTION, AND SIDE WALLS, SAID CASING SURROUNDING SAID IMPELLER AND HAVING SUFFICIENT DEPTH TO PERMIT SUBSTANTIAL VERTICAL MOVEMENT OF THE IMPELLER IN CONJUNCTION IWHT THE DRIVE SHAFT, SAID CASING HAVING AN INLET BORE MEANS IN SAID TOP SECTION, SAID DRIVE SHAFT EXTENDING THROUGH SAID INLET BORE, AND AN OUTLET BORE EXTENDING THROUGH SAID SIDE WALL, A VALVE ASSEMBLY PART, SAID VALVE ASSEMBLY PART INCLUDING A VALVE SEAT DISPOSED IN SAID INLET BORE AND A VALVE HEAD, SAID VALVE HEAD SURROUNDING AND BEING RIGIDLY COUPLED TO SAID DRIVE SHAFT; SUPPORTING MEANS TO SUSPEND THE APARATUS IN THE MOLTEN METAL TO BE DIPENSED; POWERING MEANS TO PROVIDE ROTARY POWER FOR THE PUMP PORTION; CTUATING MEANS FOR RAISING AND LOWERING SAID DRIVE SHAFT WHEREBY SAID VALVE ASSEMBLY PORTION IS OPENED AND CLOSED; AND A DELIVERY PIPE ATTACHED TO THE PUMP CASING AT SAID OUTLET BORE.
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) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |