US3276930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire fabrication process
Assignee: EIDP Inc
•
Filing: 1965-12-30
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Granted: 1966-10-04
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Expires: 1985-12-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert Le Roy Keefe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:19
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/52; B29D30/58; B29D30/0601; B29D30/0605; B29D30/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN A TIRE FABRICATION PROCESS INCLUDING THE PRELIMINARY STEPS OF FORMING COMPOSITE ANNULAR TREAD AND CARCASS MEMBERS, THE STEPS OF: POSITIONING SAID MEMBERS IN A VULCANIZING PRESS WITH THE TREAD MEMBER SURROUNDING BUT SPACED FROM THE CARCASS MEMBER CENTRALLY THEREOF: APPLYING A FIRST LEVEL OF PRESSURE INTERIORLY OF SAID CARCASS MEMBER TO PARTIALLY SHAPE AND MOVE IT OUT WARDLY INTO SURFACE CONTACT WITH THE INTERIOR OF SAID TREAD MEMBER; APPLYING AN INCREASED LEVEL OF RADIALLY DIRECTED PRESSURES UNIFORMLY TO THE INTERIOR OF SAID CARCASS MEMBE AND TO THE OUTER PERIPHERY OF SAID TREAD MEMBER SIMULTANEOUSLY WITH THE APPLICATION OF SUFFICIENT HEAT TO UNITE SAID MEMBERS, TO FORM A TREAD PATTERN ON THE OUTER PERIPHERY OF SAID TREAD MEMBER WHILE MAINTAINING ITS ORIGINAL DIAMETER AND TO SHAPE THE TIRE; AND APPLYING A FURTHER INCREASED LEVEL OF PRESSURE INTERIORLY OF SAID TIRE WHILE MAINTAINING IT AT AN ELEVATED TEMPERATURE FOR THEDURATION OF A VULCANIZING CYCLE.
Claim 2
Dependent Claim
153 words
IN A TIRE FABRICATION PROCESS INCLUDING THE PRELIMINARY STEPS OF FORMING COMPOSITE ANNULAR TREAD AND CARCASS MEMBERS, THE STEPS OF: POSITIONING SAID MEMBERS IN A VULCANIZING PRESS WITH THE TREAD MEMBER SURROUNDING BUT SPACED FROM THE CARCASS MEMBER CENTRALLY THEREOF: APPLYING A FIRST LEVEL OF PRESSURE INTERIORLY OF SAID CARCASS MEMBER TO PARTIALLY SHAPE AND MOVE IT OUT WARDLY INTO SURFACE CONTACT WITH THE INTERIOR OF SAID TREAD MEMBER; APPLYING AN INCREASED LEVEL OF RADIALLY DIRECTED PRESSURES UNIFORMLY TO THE INTERIOR OF SAID CARCASS MEMBE AND TO THE OUTER PERIPHERY OF SAID TREAD MEMBER SIMULTANEOUSLY WITH THE APPLICATION OF SUFFICIENT HEAT TO UNITE SAID MEMBERS, TO FORM A TREAD PATTERN ON THE OUTER PERIPHERY OF SAID TREAD MEMBER WHILE MAINTAINING ITS ORIGINAL DIAMETER AND TO SHAPE THE TIRE; AND APPLYING A FURTHER INCREASED LEVEL OF PRESSURE INTERIORLY OF SAID TIRE WHILE MAINTAINING IT AT AN ELEVATED TEMPERATURE FOR THEDURATION OF A VULCANIZING CYCLE.
References Cited (Backward Citations)
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US2672914A
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US2686554A
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US2814331A
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US2948921A
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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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |