US3237298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of casting clad
Assignee: Lukens Inc
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Filing: 1965-01-07
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Granted: 1966-03-01
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Expires: 1985-01-07
Abstract
No abstract record available.
Inventors
- 👤 James L Ma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:50
CPC Classifications
B; B22; B22C; B22C3/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49888; Y10T29/4998; Y10T29/49982; Y10T29/49984; Y10T29/49988; Y10T29/49991
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
72 words
A PARTING COMPOSITION COMPRISIING A REFRACTORY OXIDE AND A HIGH VISCOSITY BINDER WHEREIN THE RATIO OF REFRACTORY OXIDE TO BINDER IS ABOUT 1-3:1 BY WEIGHT, SAID HIGH VISCOSITY BINDER SOLUTION BEING 1-5 PERCENT BY WEIGHT NITROCELLULOSE DISSOLVED IN ETHYL ACETATE WHEREIN THE NITROCELLULOSE EMPLOYED HAS A VISCOSITY OF ABOUT 100-200 SECONDS AS MEASURED BY THE FALLING BALL METHOD IN A STANDARD SOLUTION OF 25% ETHYL ALCHOL, 55% TOLUENE, AND 20% ETHYL ACETATE.
Claim 2
Dependent Claim
72 words
A PARTING COMPOSITION COMPRISIING A REFRACTORY OXIDE AND A HIGH VISCOSITY BINDER WHEREIN THE RATIO OF REFRACTORY OXIDE TO BINDER IS ABOUT 1-3:1 BY WEIGHT, SAID HIGH VISCOSITY BINDER SOLUTION BEING 1-5 PERCENT BY WEIGHT NITROCELLULOSE DISSOLVED IN ETHYL ACETATE WHEREIN THE NITROCELLULOSE EMPLOYED HAS A VISCOSITY OF ABOUT 100-200 SECONDS AS MEASURED BY THE FALLING BALL METHOD IN A STANDARD SOLUTION OF 25% ETHYL ALCHOL, 55% TOLUENE, AND 20% ETHYL ACETATE.
Claim 3
Independent Claim
157 words
THE METHOD OF CASTING CLAD METAL WHICH COMPRISES PLACING A PRIME COAT AND A COVERING COAT OF A PARTING COMPOSITION ON THE OPPOSING SURFACES OF A PAIR OF INSERTS, COMPRISING A HIGH VISCOSITY BINDER AND A REFRACTORY OXIDE, SAID HIGH VISCOSITY BINDER BEING A 1-5% SOLUTION BY WEIGHT NITROCELLULOSE DISSOLVED IN ETHYL ACETATE WHEREIN SAID NITROCELLULOSE EMPLOYED HAS VISCOSITY OF ABOUT 100-200 SECONDS AS MEASURED BY THE FALLING BALL METHOD IN A STANDARD SOLUTION OF 25% ETHYL ALCOHOL, 55% TOLUENE AND 20% ETHYL ACETATE, SAID PRIME COAT HAVING CHROMIC OXIDE AND SAID COVERING COAT HAVING MANGANESE DIOXIDE, ASSEMBLING SAID INSERTS INTO A PACK, QUICK DIPPING SAID PACK IN A BATH OF MOLTEN STEEL TO COVER AND SEAL THE PACK, PLACING SAID PACK IN A MOLD AND CASTING THE CLAD BY POURING MOLTEN METAL INTO THE MOLD AROUND SAID PACK, REMOVING THE CAST CLAD FROM THE MOLD AND SUBJECTING SAME TO A ROLLING STEP WITH HEAT AND PRESSURE.
Claim 4
Independent Claim
157 words
THE METHOD OF CASTING CLAD METAL WHICH COMPRISES PLACING A PRIME COAT AND A COVERING COAT OF A PARTING COMPOSITION ON THE OPPOSING SURFACES OF A PAIR OF INSERTS, COMPRISING A HIGH VISCOSITY BINDER AND A REFRACTORY OXIDE, SAID HIGH VISCOSITY BINDER BEING A 1-5% SOLUTION BY WEIGHT NITROCELLULOSE DISSOLVED IN ETHYL ACETATE WHEREIN SAID NITROCELLULOSE EMPLOYED HAS VISCOSITY OF ABOUT 100-200 SECONDS AS MEASURED BY THE FALLING BALL METHOD IN A STANDARD SOLUTION OF 25% ETHYL ALCOHOL, 55% TOLUENE AND 20% ETHYL ACETATE, SAID PRIME COAT HAVING CHROMIC OXIDE AND SAID COVERING COAT HAVING MANGANESE DIOXIDE, ASSEMBLING SAID INSERTS INTO A PACK, QUICK DIPPING SAID PACK IN A BATH OF MOLTEN STEEL TO COVER AND SEAL THE PACK, PLACING SAID PACK IN A MOLD AND CASTING THE CLAD BY POURING MOLTEN METAL INTO THE MOLD AROUND SAID PACK, REMOVING THE CAST CLAD FROM THE MOLD AND SUBJECTING SAME TO A ROLLING STEP WITH HEAT AND PRESSURE.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |