Patent US3217070A successfully refreshed from Google Patents.
US3217070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of laminated board structures
Assignee: Beazer East Inc
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Filing: 1963-06-19
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Granted: 1965-11-09
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Expires: 1983-06-19
Abstract
No abstract record available.
Inventors
- 👤 Warren A Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:03
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C44/00; B29C44/20; B29C44/32; B29C44/326
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
157 words
A METHOD FOR THE MANUFACTURE OF A CONTINUOUS LAMINATE HAVING A CORE OF AN EXPANDABLE PASTIC BETWEEN OPPOSED LINER SURFACES COMPRISING THE STEPS OF: (A) MOVING A PLURALITY OF SPACED FLEXIBLE LINERS THROUGH A HEATING ZONE COMPRISED OF FIXABLE HEATED ABUTMENTS HAVING OPPOSED SPACED APART FLAT SURFACE; (B) DISTRIBUTING EXPANDABLE PLASTIC MATERIAL BETWEEN THE OUTER ONES OF SAID OF LINERS TO FORM A LAMINATE MOVING THROUGH SAID HEATING ZONE; (C) MAINTAINING SAID LAMINATE IN SAID HEATING ZONE FOR A LENGTH OF TIME SUFFICIENT TO CAUSE SAID PLASTIC TO EXPAND AND URGE SAID OUTER LINERS TOWRD SAID ABUTMENTS, SAID PLASTIC COALESCING INTO AN INTERGRAL CELLULAR STRUCTURE BONDED TO SAID LINERS; (D) CONTROLLABLY MAINTAINING A FILM OF A GAS BETWEEN THE OUTER SURFACES OF THE OUTER LINERS AND THE IMMEDIATELY ADJACENT SURFACES OF THE ABUTMENTS WHEREBY THE FRICTION AT THE INTERFACE BETWEEN THE OUTER LINERS AND THE ADJACENT ABUTMENTS IS SUBSTANTIALLY REDUCED; AND (E) COOLING THE LAMINATE SO FORMED.
Claim 2
Independent Claim
157 words
A METHOD FOR THE MANUFACTURE OF A CONTINUOUS LAMINATE HAVING A CORE OF AN EXPANDABLE PASTIC BETWEEN OPPOSED LINER SURFACES COMPRISING THE STEPS OF: (A) MOVING A PLURALITY OF SPACED FLEXIBLE LINERS THROUGH A HEATING ZONE COMPRISED OF FIXABLE HEATED ABUTMENTS HAVING OPPOSED SPACED APART FLAT SURFACE; (B) DISTRIBUTING EXPANDABLE PLASTIC MATERIAL BETWEEN THE OUTER ONES OF SAID OF LINERS TO FORM A LAMINATE MOVING THROUGH SAID HEATING ZONE; (C) MAINTAINING SAID LAMINATE IN SAID HEATING ZONE FOR A LENGTH OF TIME SUFFICIENT TO CAUSE SAID PLASTIC TO EXPAND AND URGE SAID OUTER LINERS TOWRD SAID ABUTMENTS, SAID PLASTIC COALESCING INTO AN INTERGRAL CELLULAR STRUCTURE BONDED TO SAID LINERS; (D) CONTROLLABLY MAINTAINING A FILM OF A GAS BETWEEN THE OUTER SURFACES OF THE OUTER LINERS AND THE IMMEDIATELY ADJACENT SURFACES OF THE ABUTMENTS WHEREBY THE FRICTION AT THE INTERFACE BETWEEN THE OUTER LINERS AND THE ADJACENT ABUTMENTS IS SUBSTANTIALLY REDUCED; AND (E) COOLING THE LAMINATE SO FORMED.
Claim 3
Dependent Claim
162 words
IN A MECHANISM FOR THE MANUFACTURE OF A CONTINOUS LAMINATE HAVING A CORE OF EXPANDABLE PLASTIC MATERIAL, THE COMBINATION COMPRISING: (A) A PLURALITY OF FIXABLE FLAT HEATING SURFACES DISPOSED IN SPACED APART RELATION; (B) MEANS FOR CONTINUOUSLY PULLING A PLURALITY OF LINER SURFACES BETWEEN SAID HEATING SURFACE; (C) MEANS FOR DISTRIBUTING SAID EXPANDABLE PLASTIC BETWEEN SAID LINER SURFACES AS A CORE AND FORMING BETWEEN SAID LINER SURFACES AS A CORE AND FORMING SAID LAMINATE; (D) MEANS FOR INTERPOSING A THIN LAYER OF AIR AT THE INTERFACE BETWEEN THE OUTER SURFACES OF SAID LAMINATE AND THE JUXTAPOSED HEATING SURFACES; (E) MEANS FOR SUPPLYING AIR UNDER PRESSURE TO SAID INTERPOSING MEANS WHEREBY, AS THE PLASTIC MATERIAL EXPANDS WHEN EXPOSED TO HEAT AND FORMS A INTEGRAL CELLULAR STRUCTURE AND SAID OUTER LINERS ARE URGED TOWARD SAID JUXTAPOSED HEATING SURFACES, THE FRICTIONAL FORCE AT THE INTERFACE BETWEEN SAID, OUTER LINER AND SID HEATING SURFACE IS SUBSTANTIALLY REDUCED, AND (F) MEANS FOR COOLING THE LAMINATE SO FORMED.
Claim 4
Dependent Claim
162 words
IN A MECHANISM FOR THE MANUFACTURE OF A CONTINOUS LAMINATE HAVING A CORE OF EXPANDABLE PLASTIC MATERIAL, THE COMBINATION COMPRISING: (A) A PLURALITY OF FIXABLE FLAT HEATING SURFACES DISPOSED IN SPACED APART RELATION; (B) MEANS FOR CONTINUOUSLY PULLING A PLURALITY OF LINER SURFACES BETWEEN SAID HEATING SURFACE; (C) MEANS FOR DISTRIBUTING SAID EXPANDABLE PLASTIC BETWEEN SAID LINER SURFACES AS A CORE AND FORMING BETWEEN SAID LINER SURFACES AS A CORE AND FORMING SAID LAMINATE; (D) MEANS FOR INTERPOSING A THIN LAYER OF AIR AT THE INTERFACE BETWEEN THE OUTER SURFACES OF SAID LAMINATE AND THE JUXTAPOSED HEATING SURFACES; (E) MEANS FOR SUPPLYING AIR UNDER PRESSURE TO SAID INTERPOSING MEANS WHEREBY, AS THE PLASTIC MATERIAL EXPANDS WHEN EXPOSED TO HEAT AND FORMS A INTEGRAL CELLULAR STRUCTURE AND SAID OUTER LINERS ARE URGED TOWARD SAID JUXTAPOSED HEATING SURFACES, THE FRICTIONAL FORCE AT THE INTERFACE BETWEEN SAID, OUTER LINER AND SID HEATING SURFACE IS SUBSTANTIALLY REDUCED, AND (F) MEANS FOR COOLING THE LAMINATE SO FORMED.
References Cited (Backward Citations)
FR1136263A
Cited
US2909804A
Cited
US2962407A
Cited
US3037897A
Cited
US2998501A
Cited
FR1262090A
Cited
US2983962A
Cited
US3111709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |