Patent US3072960A successfully refreshed from Google Patents.
US3072960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for curing vinyl resin foam
Assignee: Union Carbide Corp
•
Filing: 1957-12-04
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Granted: 1963-01-15
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Expires: 1977-12-04
Abstract
No abstract record available.
Inventors
- 👤 William J Smythe
- 👤 Egon M Muller
- 👤 Robert W Weeden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:12
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/60; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29K; B29K2105/00; B29K2105/24; Y; Y10; Y10S; Y10S264/00; Y10S264/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
APPARATUS FOR CURING PLASTICIZED VINYL RESIN FOAM, COMPRISING TWO SPACED ELECTRODES, ONE OF SAID ELECTRODES BEING CONNECTED TO A SOURCE OF RADIO FREQUENCY ELECTRIC CURRENT, AND THE OTHER BEING GROUNDED, A CONVEYOR BELT MOUNTED TO MOVE BETWEEN SAID ELECTRODES, MEANS IS DEPOSITE UNGELLED FOAM ON SAID CONVEYOR BEFORE IT ENTERS THE SPACE BETWEEN SAID ELECTRODES, AND SEPARATE, ADDITIONAL MEANS FOR CONTROLLING THE AMBIENT TEMPERATURES SURROUNDING THE FOAM WHILE IT MOVES BETWEEN SAID ELECTRODES TO CAUSE SAID AMBIENT TEMPERATURES TO INCREASE PROGRESSIVELY FROM THE POINT WHERE THE FORM FIRST ENTERS THE SPACE BETWEEN THE ELECTRODES TO AT LEAST THE POINT WHERE THE FOAM IS GELLED.
Claim 2
Dependent Claim
104 words
APPARATUS FOR CURING PLASTICIZED VINYL RESIN FOAM, COMPRISING TWO SPACED ELECTRODES, ONE OF SAID ELECTRODES BEING CONNECTED TO A SOURCE OF RADIO FREQUENCY ELECTRIC CURRENT, AND THE OTHER BEING GROUNDED, A CONVEYOR BELT MOUNTED TO MOVE BETWEEN SAID ELECTRODES, MEANS IS DEPOSITE UNGELLED FOAM ON SAID CONVEYOR BEFORE IT ENTERS THE SPACE BETWEEN SAID ELECTRODES, AND SEPARATE, ADDITIONAL MEANS FOR CONTROLLING THE AMBIENT TEMPERATURES SURROUNDING THE FOAM WHILE IT MOVES BETWEEN SAID ELECTRODES TO CAUSE SAID AMBIENT TEMPERATURES TO INCREASE PROGRESSIVELY FROM THE POINT WHERE THE FORM FIRST ENTERS THE SPACE BETWEEN THE ELECTRODES TO AT LEAST THE POINT WHERE THE FOAM IS GELLED.
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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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |