US2736077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making shell mold
Assignee: —
•
Filing: —
•
Granted: 1956-02-28
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Expires: 1973-02-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:25
CPC Classifications
B; B22; B22C; B22C7/00; B22C7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN THE METHOD OF MAKING MOLD COMPONENTS IN WHICH A PATTERN MATERIAL IS COATED WITH PARTICLES OF A REFRACTORY MATERIAL BONDED TOGETHER WITH A THERMOSETTING BINDER, THE STEPS WHICH COMPRISE PROVIDING A PATTERN OF A MATERIAL HAVING A MELTING POINT BETWEEN THE BONDING TEMPERATURE AND THE SETTING TEMPERATURE OF SAID THERMOSETTING BINDER, COATING SAID PATTERN WITH A DRY MIXTURE OF SAID REFRACTORY MATERIAL PARTICLES AND THERMOSETTING BINDER, HEATING THE COATED PATTERN FOR A TIME SUFFICIENT TO BUILD UP A COATING OF SAID MIXTURE ON THE SURFACE OF SAID PATTERN, AND REMOVING THE PATTERN IN LIQUID FORM FROM THE BUILT UP COATING.
Claim 2
Dependent Claim
101 words
IN THE METHOD OF MAKING MOLD COMPONENTS IN WHICH A PATTERN MATERIAL IS COATED WITH PARTICLES OF A REFRACTORY MATERIAL BONDED TOGETHER WITH A THERMOSETTING BINDER, THE STEPS WHICH COMPRISE PROVIDING A PATTERN OF A MATERIAL HAVING A MELTING POINT BETWEEN THE BONDING TEMPERATURE AND THE SETTING TEMPERATURE OF SAID THERMOSETTING BINDER, COATING SAID PATTERN WITH A DRY MIXTURE OF SAID REFRACTORY MATERIAL PARTICLES AND THERMOSETTING BINDER, HEATING THE COATED PATTERN FOR A TIME SUFFICIENT TO BUILD UP A COATING OF SAID MIXTURE ON THE SURFACE OF SAID PATTERN, AND REMOVING THE PATTERN IN LIQUID FORM FROM THE BUILT UP COATING.
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) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |