US3281516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making facing for siding
Assignee: United States Gypsum Co
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Filing: 1963-06-18
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Granted: 1966-10-25
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Expires: 1983-06-18
Abstract
No abstract record available.
Inventors
- 👤 Southwick Charles Russel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:12
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/02; B29C53/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
IN A CONTINUOUS PROCESS FOR FORMING A FLAT THERMOPLASTIC SHEET INTO A DESIRED CROSS-SECTIONAL CONFIGURATION THE STEPS COMPRISING CONTINUOUSLY MOVING SAID SHEET ALONG A PATH PARALLEL TO THE SHEET LONGITUDINAL AXIS, EMBOSSING FOLD LINES IN SAID SHEET IN THE COURSE OF MOVEMENT THEREOF PARALLEL TO THE AXIS OF MOVEMENT, SO AS TO DEFINED OPPOSED SHEET MARGINAL PORTIONS SPACED APART BY INTERVENING CONTINGUOUS SHEET PORTIONS; HEATING SAID SHEET, FORMING SAID HEATED SHEET INTO SUBSTANTIALLY SAID DESIRED CROSS-SECTIONAL CONFIGURATION BY PASSING SAID SHEET BETWEEN UNHEATED FORMING MEMBERS HAVING OPPOSED SURFACES WHICH SLIDABLY ENGAGE OPPOSED SURFACE OF SAID SHEET; PASSING SAID SHEET BETWEEN OPPOSED HEATED MEMBERS, SAID HEATED MEMBERS HAVING OPPOSED SURFACES WHICH SLIDABLY ENGAGE OPPOSED SURFACE OF SAID SHEET WITHOUT SUBSTANTIALLY ALTERING THE SHEET CROSS-SECTIONAL CONFIGURATION POSSESSED UPON EXITING FROM BETWEEN SAID UNHEATED FORMING MEMBERS; THE HEAT APPLIED TO SAID THERMOPLASTIC SHEET BY SAID HEATED MEMBERS RENDERING PERMANENT IN SAID SHEET THE CONFIGURATION SUBSTANTIALLY IMPARTED THERETO BY SAID UNHEATED FORMING MEMBERS, AND PASSING SAID SHEET INTO AN OVERBENDER AND OVERBENDING SAID SHEET MARGINAL PORTIONS INTO ANGULAR RELATIONSHIPS WITH SAID CONTIGUOUS SHEET PORTIONS WHEREBY THE ANGLES DEFINED BETWEEN SAID SHEET MARGINAL PORTIONS AND SAID CONTIGUOUS SHEET PORTIONS ARE LESS THAN THOSE PRESENT IN SAID SHEET DESIRED CROSS-SECTIONAL CONFIGURATION.
Claim 2
Dependent Claim
205 words
IN A CONTINUOUS PROCESS FOR FORMING A FLAT THERMOPLASTIC SHEET INTO A DESIRED CROSS-SECTIONAL CONFIGURATION THE STEPS COMPRISING CONTINUOUSLY MOVING SAID SHEET ALONG A PATH PARALLEL TO THE SHEET LONGITUDINAL AXIS, EMBOSSING FOLD LINES IN SAID SHEET IN THE COURSE OF MOVEMENT THEREOF PARALLEL TO THE AXIS OF MOVEMENT, SO AS TO DEFINED OPPOSED SHEET MARGINAL PORTIONS SPACED APART BY INTERVENING CONTINGUOUS SHEET PORTIONS; HEATING SAID SHEET, FORMING SAID HEATED SHEET INTO SUBSTANTIALLY SAID DESIRED CROSS-SECTIONAL CONFIGURATION BY PASSING SAID SHEET BETWEEN UNHEATED FORMING MEMBERS HAVING OPPOSED SURFACES WHICH SLIDABLY ENGAGE OPPOSED SURFACE OF SAID SHEET; PASSING SAID SHEET BETWEEN OPPOSED HEATED MEMBERS, SAID HEATED MEMBERS HAVING OPPOSED SURFACES WHICH SLIDABLY ENGAGE OPPOSED SURFACE OF SAID SHEET WITHOUT SUBSTANTIALLY ALTERING THE SHEET CROSS-SECTIONAL CONFIGURATION POSSESSED UPON EXITING FROM BETWEEN SAID UNHEATED FORMING MEMBERS; THE HEAT APPLIED TO SAID THERMOPLASTIC SHEET BY SAID HEATED MEMBERS RENDERING PERMANENT IN SAID SHEET THE CONFIGURATION SUBSTANTIALLY IMPARTED THERETO BY SAID UNHEATED FORMING MEMBERS, AND PASSING SAID SHEET INTO AN OVERBENDER AND OVERBENDING SAID SHEET MARGINAL PORTIONS INTO ANGULAR RELATIONSHIPS WITH SAID CONTIGUOUS SHEET PORTIONS WHEREBY THE ANGLES DEFINED BETWEEN SAID SHEET MARGINAL PORTIONS AND SAID CONTIGUOUS SHEET PORTIONS ARE LESS THAN THOSE PRESENT IN SAID SHEET DESIRED CROSS-SECTIONAL CONFIGURATION.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |