US3582430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for bonding foam plastic to a backing
Assignee: SAM R BENIGNO
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Filing: 1965-10-21
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Granted: 1971-06-01
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Expires: 1985-10-21
Abstract
Abstract A PAIR OF ROLLS ARE ROTATABLE IN HORIZONTAL, PRESSURE NIP, RELATIONSHIP. A BACKING WEB AND A FOAM PLASTIC WEB ARE INTRODUCED UPWARDLY INTO THE NIP BUT SPACED APART JUST BELOW, AND IN ADVANCE OF THE NIP TO FORM AN UPWARDLY CONVERGENT THROAT. A HEATER, MOUNTED BELOW THE NIP WITHIN THE THROAT, DIRECTS HEAT UPWARDLY AGAINST THE SURFACE OF THE FOAM SO THAT IT WILL BE BONDED TO THE BACKING IN THE NIP. THE HEATER CAN BE SWUNG TO ALSO PRE-HEAT THE BACKING WEB. SUCTION IS APPLIED TO THE THROAT TO REMOVE THE GASES OF COMBUSTION.
Inventors
- 👤 Sam R Benigno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:43
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/245; B29; B29C; B29C44/00; B29C44/20; B29C44/30; B29C67/00; B29C67/20; B32B37/00; B32B37/04; B32B37/10; B32B37/14; B32B37/16; B32B37/20; B32B38/00; B32B38/0036; B32B5/18; B32B2305/00; B32B2305/02; B32B2305/022; B32B2305/10; B32B2305/18; B32B2310/00; B32B2310/04; B32B2310/0445; B32B2310/08; B32B2310/0806; B32B2310/0825
Claims Analysis
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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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |