US3308513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for coring bolt holes
Assignee: MCC Holdings Inc
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Filing: 1965-06-01
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Granted: 1967-03-14
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Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 Milton E Rowland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:50
CPC Classifications
B; B22; B22C; B22C9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN APPARATUS FOR CORING BOLT HOLES IN A STEEL CASTING DURING THE CASTING OPERATION COMPRISING, A MOLD HAVING CAVITIES THEREIN CONFORMING TO THE SHAPE OF THE STEEL ARTICLE, INCLUDING A CAVITY CONFORMING TO THE SHAPE OF A FLANGE ON THE ARTICLE; SAID MOLD HAVING ANOTHER CAVITY THEREIN ADJACENT AND PARALLEL TO THE CAVITY CONFORMING TO THE SHAPE OF THE FLANGE ON THE ARTICLE, A BOLT HOLE CORE FITTING INTO THE LAST NAMED CAVITY, SAID BOLT HOLE CORE INCLUDING A CORE PIN PROJECTING INTO THE CAVITY CONFORMING TO THE SHAPE OF A FLANGE ON THE ARTICLE, A PROTRUDING SPOT FACE BASE ON THE INNER END OF THE BOLT HOLE CORE.
Claim 2
Independent Claim
109 words
AN APPARATUS FOR CORING BOLT HOLES IN A STEEL CASTING DURING THE CASTING OPERATION COMPRISING, A MOLD HAVING CAVITIES THEREIN CONFORMING TO THE SHAPE OF THE STEEL ARTICLE, INCLUDING A CAVITY CONFORMING TO THE SHAPE OF A FLANGE ON THE ARTICLE; SAID MOLD HAVING ANOTHER CAVITY THEREIN ADJACENT AND PARALLEL TO THE CAVITY CONFORMING TO THE SHAPE OF THE FLANGE ON THE ARTICLE, A BOLT HOLE CORE FITTING INTO THE LAST NAMED CAVITY, SAID BOLT HOLE CORE INCLUDING A CORE PIN PROJECTING INTO THE CAVITY CONFORMING TO THE SHAPE OF A FLANGE ON THE ARTICLE, A PROTRUDING SPOT FACE BASE ON THE INNER END OF THE BOLT HOLE CORE.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |