US3077014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding machine and process
Assignee: Deere and Co
•
Filing: 1960-10-25
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Granted: 1963-02-12
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Expires: 1980-10-25
Abstract
No abstract record available.
Inventors
- 👤 William R Jennings
- 👤 Raymond V Greder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:39
CPC Classifications
B; B22; B22C; B22C23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A METHOD OF PRODUCING METAL CASTINGS, THAT COMPRISES PROVIDING A PAIR OF COMPLEMENTARY BACKING MEMBERS, CLAMPING A PATTERN THEREBETWEEN, BLOWING A HEAT SETTABLE SAID MIXTURE INTO THE SPACE BETWEEN SAID PATTERN AND EACH BACKING MEMBER, APPLYING HEAT TO HEAT THE BACKING MEMBERS SO AS TO CURE SAID MIXTURE AND FORM A MOLD SHELL WITHIN EACH BACKING MEMBER, SEPARATING SAID BACKING MEMBERS AND THE MOLD SHELLS THEREIN FROM THE PATTERN, CLOSING SAID BACKING MEMBERS AGAINST ONE ANOTHER, WITH THE MOLD SHELLS RETAINED THEREIN TO FORM A MOLD CAVITY, POURING MOLTEN METAL INTO THE MOLD CAVITY BETWEEN THE MOLD SHELLS TO FORM A CASTING, AND UTILIZING THE HEAT IN THE MOLTEN METAL TO DISINTEGRATE THE MOLD SHELLS AND REHEAT THE BACKING MEMBERS.
Claim 2
Independent Claim
120 words
A METHOD OF PRODUCING METAL CASTINGS, THAT COMPRISES PROVIDING A PAIR OF COMPLEMENTARY BACKING MEMBERS, CLAMPING A PATTERN THEREBETWEEN, BLOWING A HEAT SETTABLE SAID MIXTURE INTO THE SPACE BETWEEN SAID PATTERN AND EACH BACKING MEMBER, APPLYING HEAT TO HEAT THE BACKING MEMBERS SO AS TO CURE SAID MIXTURE AND FORM A MOLD SHELL WITHIN EACH BACKING MEMBER, SEPARATING SAID BACKING MEMBERS AND THE MOLD SHELLS THEREIN FROM THE PATTERN, CLOSING SAID BACKING MEMBERS AGAINST ONE ANOTHER, WITH THE MOLD SHELLS RETAINED THEREIN TO FORM A MOLD CAVITY, POURING MOLTEN METAL INTO THE MOLD CAVITY BETWEEN THE MOLD SHELLS TO FORM A CASTING, AND UTILIZING THE HEAT IN THE MOLTEN METAL TO DISINTEGRATE THE MOLD SHELLS AND REHEAT THE BACKING MEMBERS.
References Cited (Backward Citations)
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Cited
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US2724158A
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US2791012A
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Cited
US2873493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |