Patent US2635294A successfully refreshed from Google Patents.
US2635294A
Expired / Lapsed
US
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Manufacture of wax models for precision casting
Assignee: British Industrial Plastics Ltd
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Filing: 1950-03-29
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Granted: 1953-04-21
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Expires: 1970-03-29
Abstract
No abstract record available.
Inventors
- 👤 Rolaston Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:25
CPC Classifications
B; B22; B22C; B22C7/00; B22C7/02; B29; B29C; B29C33/00; Y; Y10; Y10S; Y10S425/00; Y10S425/029
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
PROCESS FOR THE MANUFACTURE OF A WAX MODEL OF A MASTER MOULD FOR PRECISION CASTING BY THE LOST WAX METHOD, CONSISTING IN FORMING THE SHAPED FACE OF THE MODEL OF LAYER PRODUCED FROM WAX WHICH HAS BEEN HEATED SO AS TO FLUID AND PARTLY SOLIDIFIED ON THE DIE SURFACE OF THE MASTER MOULD, AND FORMING THE BODY OF THE MODEL FROM SUBDIVIDED SOLID WAX BY COMPRESSING IT IN THE MOULD AGAINST SAID PARTIALLY SOLIDIFIED LAYER AND THUS WELDING THE BODY INTO A COHERENT MASS AND TO THE SAID LAYER, WHILE THE LATTER IS STILL CAPABLE OF FLOW AND IS STILL IN CONTACT WITH THE DIE SURFACE.
Claim 2
Dependent Claim
106 words
PROCESS FOR THE MANUFACTURE OF A WAX MODEL OF A MASTER MOULD FOR PRECISION CASTING BY THE LOST WAX METHOD, CONSISTING IN FORMING THE SHAPED FACE OF THE MODEL OF LAYER PRODUCED FROM WAX WHICH HAS BEEN HEATED SO AS TO FLUID AND PARTLY SOLIDIFIED ON THE DIE SURFACE OF THE MASTER MOULD, AND FORMING THE BODY OF THE MODEL FROM SUBDIVIDED SOLID WAX BY COMPRESSING IT IN THE MOULD AGAINST SAID PARTIALLY SOLIDIFIED LAYER AND THUS WELDING THE BODY INTO A COHERENT MASS AND TO THE SAID LAYER, WHILE THE LATTER IS STILL CAPABLE OF FLOW AND IS STILL IN CONTACT WITH THE DIE SURFACE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |