US3210449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for making a cylindrical-shaped cellular rubber strip
Assignee: Goodrich Corp
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Filing: 1963-04-08
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Granted: 1965-10-05
•
Expires: 1983-04-08
Abstract
No abstract record available.
Inventors
- 👤 Talalay Leon
- 👤 Herbert H Borsvold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:15
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/022; B29K; B29K2021/00; B29L; B29L2031/00; B29L2031/32; B29L2031/324; B29L2031/326
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
178 words
THE METHOD FOR MAKING A CYLINDRICAL-SHAPED STRIP OF GAS-EXPANDED CELLULAR RUBBER WHICH COMPRISES FORMING A CYLINDRICAL-SHAPED STRIP FROM A RUBBER COMPOSITION CONTAINING A CHEMICAL BLOWING AGENT, SUPPORTING SAID OTHERWISE UNSUPPORTED STRIP OF RUBBER COMPOSITION ON PARALLEL ROLLS BY DEPOSITING SAID STRIP OF RUBBER COMPOSITION IN THE TROUGH FORMED BETWEEN AND BY SAID ROLLS, THE SPACING BETWEEN SAID ROLLS BEING LESS THAN THE DIAMETER OF SAID STRIP OF RUBBER COMPOSITION WHEREBY THE STRIP OF RUBBER COMPOSITION IS SUPPORTED BY TANGENTIAL CONTACT WITH SAID ROLLS, HEATING THE STRIP OF RUBBER COMPOSITION WHILE REVOLVING SAID ROLLS IN THE SAME DIRECTION OF ROTATION TO CAUSE SAID BLOWING AGENT TO EVOLVE A GAS AND EXPAND THE RUBBER COMPOSITION WHILE THE STRIP OF RUBBER COMPOSITION IS CONTINUALLY REVOLVING AROUND ITS LONGITUDINAL AXIS AND IN ONLY TANGENTIAL CONTACT WITH THE SAID SUPPORTING ROLLS SO THAT SAID STRP OF RUBBER COMPOSITION CAN EXPAND ESSENTIALLY UNRESTRICTED IN ALL DIRECTIONS, AND FURTHER HEATING THE SAID EXPANDED STRIP OF RUBBER COMPOSITION WHILE CONTINUING TO REVOLVE SAID ROLLS IN THE SAME DIRECTION TO EFFECT VULCANIZATION OF THE EXPANDED RUBBER COMPOSITON.
Claim 2
Independent Claim
178 words
THE METHOD FOR MAKING A CYLINDRICAL-SHAPED STRIP OF GAS-EXPANDED CELLULAR RUBBER WHICH COMPRISES FORMING A CYLINDRICAL-SHAPED STRIP FROM A RUBBER COMPOSITION CONTAINING A CHEMICAL BLOWING AGENT, SUPPORTING SAID OTHERWISE UNSUPPORTED STRIP OF RUBBER COMPOSITION ON PARALLEL ROLLS BY DEPOSITING SAID STRIP OF RUBBER COMPOSITION IN THE TROUGH FORMED BETWEEN AND BY SAID ROLLS, THE SPACING BETWEEN SAID ROLLS BEING LESS THAN THE DIAMETER OF SAID STRIP OF RUBBER COMPOSITION WHEREBY THE STRIP OF RUBBER COMPOSITION IS SUPPORTED BY TANGENTIAL CONTACT WITH SAID ROLLS, HEATING THE STRIP OF RUBBER COMPOSITION WHILE REVOLVING SAID ROLLS IN THE SAME DIRECTION OF ROTATION TO CAUSE SAID BLOWING AGENT TO EVOLVE A GAS AND EXPAND THE RUBBER COMPOSITION WHILE THE STRIP OF RUBBER COMPOSITION IS CONTINUALLY REVOLVING AROUND ITS LONGITUDINAL AXIS AND IN ONLY TANGENTIAL CONTACT WITH THE SAID SUPPORTING ROLLS SO THAT SAID STRP OF RUBBER COMPOSITION CAN EXPAND ESSENTIALLY UNRESTRICTED IN ALL DIRECTIONS, AND FURTHER HEATING THE SAID EXPANDED STRIP OF RUBBER COMPOSITION WHILE CONTINUING TO REVOLVE SAID ROLLS IN THE SAME DIRECTION TO EFFECT VULCANIZATION OF THE EXPANDED RUBBER COMPOSITON.
Claim 3
Dependent Claim
158 words
APPARATUS FOR MAKING A CYLINDRICAL-SHAPED CELLULAR RUBBER STRIP WHICH COMPRISES A PAIR OF PARALLEL ROLLS FOR SUPPORTING AN OTHERWISE UNSUPPORTED STRIP OF RUBBER COMPOSITION HAVING A CHEMICAL BLOWING AGENT THEREIN IN THE TROUGH FORMED BETWEEN AND BY SAID ROLLS, THE SPACING BETWEEN SAID ROLLS BEING LESS THAN THE DIAMETER OF SAID STRIP OF RUBBER COMPOSITION WHEREBY THE STRIP OF RUBBER COMPOSITION HAVING A CHEMICAL BLOWING AGENT THEREIN IN ROLLS, MEANS FOR REVOLVING SAID ROLLS IN THE SAME DIRECTION WHEREBY SAID STRIP OF RUBBER COMPOSITION IS CAUSED TO REVOLVE AROUND ITS LONGITUUDINAL AXIS, MEANS FOR ADVANCING SAID PAIR OF REVOLVING ROLLS WITH SAID STRIP OF RUBBER COMPOSITION SUPPORTED THEREON THROUGH A HEATING ZONE, AND MEANS FOR HEATING SAID STRIP OF RUBBER COMPOSITION AS IT IS BEING ADVANCED THROUGH SAID HEATING ZONE AND REVOLVED BY SAID ROLLS TO CAUSE SAID BLOWING AGENT TO EVOLVE A GAS AND EXPAND THE RUBBER COMPOSITION AND TO CAUSE VULCANIZAITON OF THE EXPANDED RUBER COMPOSITION.
Claim 4
Dependent Claim
158 words
APPARATUS FOR MAKING A CYLINDRICAL-SHAPED CELLULAR RUBBER STRIP WHICH COMPRISES A PAIR OF PARALLEL ROLLS FOR SUPPORTING AN OTHERWISE UNSUPPORTED STRIP OF RUBBER COMPOSITION HAVING A CHEMICAL BLOWING AGENT THEREIN IN THE TROUGH FORMED BETWEEN AND BY SAID ROLLS, THE SPACING BETWEEN SAID ROLLS BEING LESS THAN THE DIAMETER OF SAID STRIP OF RUBBER COMPOSITION WHEREBY THE STRIP OF RUBBER COMPOSITION HAVING A CHEMICAL BLOWING AGENT THEREIN IN ROLLS, MEANS FOR REVOLVING SAID ROLLS IN THE SAME DIRECTION WHEREBY SAID STRIP OF RUBBER COMPOSITION IS CAUSED TO REVOLVE AROUND ITS LONGITUUDINAL AXIS, MEANS FOR ADVANCING SAID PAIR OF REVOLVING ROLLS WITH SAID STRIP OF RUBBER COMPOSITION SUPPORTED THEREON THROUGH A HEATING ZONE, AND MEANS FOR HEATING SAID STRIP OF RUBBER COMPOSITION AS IT IS BEING ADVANCED THROUGH SAID HEATING ZONE AND REVOLVED BY SAID ROLLS TO CAUSE SAID BLOWING AGENT TO EVOLVE A GAS AND EXPAND THE RUBBER COMPOSITION AND TO CAUSE VULCANIZAITON OF THE EXPANDED RUBER COMPOSITION.
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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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |