US3347732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the manufacture of corrugated faferboard
Assignee: —
•
Filing: —
•
Granted: 1967-10-17
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Expires: 1984-10-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:46
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B31F1/28; B31F1/2845; B31F1/285
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
APPARATUS FOR PRODUCING A DOUBLE-FACE CORRUGATED BOARD WEB BY BONDING A SINGLE-FACE BOARD HAVING GLUE THEREON TO A LINER SO THAT SAID WEB HAS FIRST AND SECOND OUTER FACES SEPARATED BY A FLUTED INNER STRIP COMPRISING: A BASE, A HEATING SURFACE SUPPORTED BY SAID BSE FOR CONTACTING ONE FACE OF SAID WEB FOR APPLYING HEAT THERETO, A HOUSING SUPPORTED BY SAID BASE AND JUXTAPOSITIONED OVER SAID HEATING SURFACE TO DEFINE A PLENUM THEREWITH, SUPPLY MEANS FOR SUPPLYING GAS UNDER PRESSURE TO SAID PLENUM WHEREBY SAID GAS EXERTS A SUBSTANTIALLY UNIFORM PRESSURE ON SAID WEB TO URGE SAID ONE FACE AGAINST AID HEATING SURFACE, AND POSITIONING MEANS FOR ADJUSTING THE POSITION OF SAID HOUSING RELATIVE TO SAID WEB TO CONTROL THE RATE OF ESCAPE OF GASES FROM BETWEEN SAID HOUSING AND SAID WEB.
Claim 2
Dependent Claim
132 words
APPARATUS FOR PRODUCING A DOUBLE-FACE CORRUGATED BOARD WEB BY BONDING A SINGLE-FACE BOARD HAVING GLUE THEREON TO A LINER SO THAT SAID WEB HAS FIRST AND SECOND OUTER FACES SEPARATED BY A FLUTED INNER STRIP COMPRISING: A BASE, A HEATING SURFACE SUPPORTED BY SAID BSE FOR CONTACTING ONE FACE OF SAID WEB FOR APPLYING HEAT THERETO, A HOUSING SUPPORTED BY SAID BASE AND JUXTAPOSITIONED OVER SAID HEATING SURFACE TO DEFINE A PLENUM THEREWITH, SUPPLY MEANS FOR SUPPLYING GAS UNDER PRESSURE TO SAID PLENUM WHEREBY SAID GAS EXERTS A SUBSTANTIALLY UNIFORM PRESSURE ON SAID WEB TO URGE SAID ONE FACE AGAINST AID HEATING SURFACE, AND POSITIONING MEANS FOR ADJUSTING THE POSITION OF SAID HOUSING RELATIVE TO SAID WEB TO CONTROL THE RATE OF ESCAPE OF GASES FROM BETWEEN SAID HOUSING AND SAID WEB.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |