US3092883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tightening device for hot tops
Assignee: Sandvik AB
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Filing: 1962-05-21
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Granted: 1963-06-11
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Expires: 1982-05-21
Abstract
No abstract record available.
Inventors
- 👤 Ednell Daniel Fredrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:15
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/06; B22D7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A HOT TOP FOR CASTING MOLDS COMPRISING HEAT INSULATING SLABS POSITIONED ADJACENT TO THE INNER SURFACES OF THE WALL OF THE MOLD ADJACENT THE UPPER END THEREOF, SAID SLABS HAVING INWARDLY AND DOWNWARDLY SLOPING INNER SURFACES AT LEAST ADJACENT TO THE LOWER EDGES THEREOF, AND A TIGHTENING MEMBER POSITIONED HORIZONTALLY BETWEEN SAID SLABS AND RESTING WITH ITS EDGES CONTACT WITH SAID SLOPING SURFACES THEREBY URGING SAID SLABS AGAINST THE INNER SURFACES OF THE MOLD WHEN THE MOLD IS EMPTY, SAID MEMBER BEING FLOATABLE UPON THE MOLTEN METAL AND HAVING
Claim 2
Dependent Claim
89 words
A HOT TOP FOR CASTING MOLDS COMPRISING HEAT INSULATING SLABS POSITIONED ADJACENT TO THE INNER SURFACES OF THE WALL OF THE MOLD ADJACENT THE UPPER END THEREOF, SAID SLABS HAVING INWARDLY AND DOWNWARDLY SLOPING INNER SURFACES AT LEAST ADJACENT TO THE LOWER EDGES THEREOF, AND A TIGHTENING MEMBER POSITIONED HORIZONTALLY BETWEEN SAID SLABS AND RESTING WITH ITS EDGES CONTACT WITH SAID SLOPING SURFACES THEREBY URGING SAID SLABS AGAINST THE INNER SURFACES OF THE MOLD WHEN THE MOLD IS EMPTY, SAID MEMBER BEING FLOATABLE UPON THE MOLTEN METAL AND HAVING
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) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |