US3084925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling the flow of molten metal
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1958-04-23
•
Granted: 1963-04-09
•
Expires: 1978-04-23
Abstract
No abstract record available.
Inventors
- 👤 William O Stauffer
- 👤 James E Dore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:49
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/15; F27D3/1509; F27D3/1536; B; B22; B22D; B22D41/00; B22D41/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
113 words
AN APPARATUS FOR RELEASING, CONTROLLING AND STOPPING THE FLOW OF MOLTEN METAL FROM A MOLTEN METAL HOLDING RECEPTACLE COMPRISING IN COMBINATION A TAPPING BLOCK PROVIDED WITH AN ORIFICE AND A FLOW CHANNEL ON THE OUTLET SIDE OF SAID ORIFICE, SAID ORIFICE HAVING A ROUNDED INLET EDGE, A ROUNDED OUTLET EDGE, AND BEING INCLINED AT AN ANGLE TO THE HORIZONTAL WITH THE OUTLET END AT A HIGHER POSITION THAN THE INLET END, THE LOWER SURFACE OF SAID FLOW CHANNEL HAVING A DOWNWARD PITCH AWAY FROM SAID ORIFICE, THE UPPER SURFACE OF SAID FLOW CHANNEL HAVING AN UPWARD PITCH AWAY FROM SAID ORIFICE, SAID UPPER SURFACE HAVING A CURVATURE SUCH THAT A TRANSVERSE CROSS-SECTION THEREOF
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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) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |