Patent US2756458A successfully refreshed from Google Patents.
US2756458A
Expired / Lapsed
US
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Method of manufacturing continuous tubing and apparatus therefor
Assignee: Goodrich Corp
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Filing: 1952-10-03
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Granted: 1956-07-31
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Expires: 1972-10-03
Abstract
No abstract record available.
Inventors
- 👤 Carroll P Krupp
- 👤 Stephen C Sabo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:07
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/36; B29C53/38; B29C53/48; B29C53/50; B29C37/00; B29C37/0003; B29C37/0017; B29C53/382; B29C35/00; B29C35/16; B29C2035/1658; B29K; B29K2021/00; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0809; B29K2105/24; B29L; B29L2009/00; B29L2023/00; B29L2023/005; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/1013
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
288 words
THE METHOD OF MANUFACTURING A CONTINUOUS LENGTH OF TUBING OF VULCANIZABLE RUBBERY MATERIAL, WHICH METHOD COMPRISES THE STEPS OF FORMING A CONTINUOUS STRIP OF UNCURED RUBBERY SHEET MATERIAL PROGRESSIVELY INTO A CONTINUOUS LENGTH OF UNCURED TUBING HAVING A PLURALITY OF DETERMINE LENGTHS THEREOF IN SUCCESSION, PROVIDING AN ELONGATED TUBULAR MOLDING MEMBER OF A LENGTH SUBSTANTIALLY EQUAL TO THAT OF A DETERMINE LENGTH OF UNCURED TUBING, ADVANCING THE DETERMINATE LENGTHS OF UNCURED TUBING THROUGH SAID MOLDING MEMBER BY A STEP-BY-STEP MOVEMENT, CURING EACH DETERMINATE LENGTH OF UNCURED TUBING DURING ITS INTERVAL OF REST IN THE MOLDING MEMBER BY PRESSING THE WALL OF THE UNCURED TUBING RADIALLY OUTWARD INTO CONTACTING HEAT-TRANSFERRING RELATION WITH THE ADJACENT WALL OF THE MOLDING MEMBER AND AT THE SAME TIME MAINTAINING THE INTERIOR SPACE OF THE UNCURED TUBING IN COMMUNICATION WITH THE OUTER ATMOSPHERE THROUGH THE END OF THE UNCURED TUBING AT THE ENTRANT END OF THE MOLDING MEMBER AND BY HEATING SAID ADJACENT WALL OF THE MOLDING MEMBER A DETERMINATE PERIOD OF TIME TO CURE THE TUBING THEREIN, SEALING OPPOSITE END PORTIONS OF THE WALL OF THE CURED TUBING IN SAID MOLDING MEMBER RELATIVE TO SAID WALL OF SUCH MEMBER AT ITS ENTRANT AND DELIVERY ENDS WHILE SUCH WALLS CONTACT ONE ANOTHER THEREBETWEEN, AND MOVING THE WALL OF THE CURED TUBING IN THE MOLDING MEMBER RADIALLY INWARD AWAY FROM CONTACT AGAINST SAID ADJACENT WALL OF SUCH MEMBER WHILE SAID END PORTIONS OF THE CURED TUBING ARE SEALED BY SUBJECTING THE EXTERIOR OF SAID WALL OF SAID CURED TUBING INTERMEDIATE ITS SEALED END PORTIONS TO FLUID UNDER PRESSURE TO COMPEL SEPARATION OF THE CONTACTING WALLS OF THE CURED TUBING AND THE MOLDING MEMBER TO FACILITATE ADVANCING THE SUCCEEDING LENGTH OF UNCURED TUBING INTO THE MEMBER.
Claim 2
Independent Claim
288 words
THE METHOD OF MANUFACTURING A CONTINUOUS LENGTH OF TUBING OF VULCANIZABLE RUBBERY MATERIAL, WHICH METHOD COMPRISES THE STEPS OF FORMING A CONTINUOUS STRIP OF UNCURED RUBBERY SHEET MATERIAL PROGRESSIVELY INTO A CONTINUOUS LENGTH OF UNCURED TUBING HAVING A PLURALITY OF DETERMINE LENGTHS THEREOF IN SUCCESSION, PROVIDING AN ELONGATED TUBULAR MOLDING MEMBER OF A LENGTH SUBSTANTIALLY EQUAL TO THAT OF A DETERMINE LENGTH OF UNCURED TUBING, ADVANCING THE DETERMINATE LENGTHS OF UNCURED TUBING THROUGH SAID MOLDING MEMBER BY A STEP-BY-STEP MOVEMENT, CURING EACH DETERMINATE LENGTH OF UNCURED TUBING DURING ITS INTERVAL OF REST IN THE MOLDING MEMBER BY PRESSING THE WALL OF THE UNCURED TUBING RADIALLY OUTWARD INTO CONTACTING HEAT-TRANSFERRING RELATION WITH THE ADJACENT WALL OF THE MOLDING MEMBER AND AT THE SAME TIME MAINTAINING THE INTERIOR SPACE OF THE UNCURED TUBING IN COMMUNICATION WITH THE OUTER ATMOSPHERE THROUGH THE END OF THE UNCURED TUBING AT THE ENTRANT END OF THE MOLDING MEMBER AND BY HEATING SAID ADJACENT WALL OF THE MOLDING MEMBER A DETERMINATE PERIOD OF TIME TO CURE THE TUBING THEREIN, SEALING OPPOSITE END PORTIONS OF THE WALL OF THE CURED TUBING IN SAID MOLDING MEMBER RELATIVE TO SAID WALL OF SUCH MEMBER AT ITS ENTRANT AND DELIVERY ENDS WHILE SUCH WALLS CONTACT ONE ANOTHER THEREBETWEEN, AND MOVING THE WALL OF THE CURED TUBING IN THE MOLDING MEMBER RADIALLY INWARD AWAY FROM CONTACT AGAINST SAID ADJACENT WALL OF SUCH MEMBER WHILE SAID END PORTIONS OF THE CURED TUBING ARE SEALED BY SUBJECTING THE EXTERIOR OF SAID WALL OF SAID CURED TUBING INTERMEDIATE ITS SEALED END PORTIONS TO FLUID UNDER PRESSURE TO COMPEL SEPARATION OF THE CONTACTING WALLS OF THE CURED TUBING AND THE MOLDING MEMBER TO FACILITATE ADVANCING THE SUCCEEDING LENGTH OF UNCURED TUBING INTO THE MEMBER.
Claim 3
Dependent Claim
372 words
A VULCANIZING CHAMBER ASSEMBLY COMPRISING AN ELONGATED TUBULAR MOLDING MEMBER OF SUBSTANTIALLY UNIFORM INSIDE DIAMETER OPEN AT ITS ENTRANT AND DELIVERY ENDS FOR RECEIVING SUCCESSIVE DETERMINATE LENGTHS OF UNCURED TUBING OF VULCANIZABLE RUBBERY MATERIAL ADVANCED BY STEP-BY-STEP MOVEMENT THROUGH THE MOLDING MEMBER, INFLATABLE PRESSURE-APPLY MEANS WITHIN SAID MOLDING MEMBER FOR POSITIONING WITHIN THE UNCURED TUBING AND OPERATIVE TO PRESS THE WALL OF THE UNCURED TUBING RADIALLY OUTWARD AGAINST THE ADJACENT WALL OF SAID MOLDING MEMBER IN HEAT-TRANSFERRING RELATION THERETO DURING THE INTERVAL OF REST OF THE UNCURED TUBING IN SAID MEMBER, SAID PRESSURE-APPLYING MEANS COMPRISING AND ELONGATED TUBULAR OPEN-ENDED INFLATABLE ELEMENT EXTENDING FROM SAID ENTRANT END AND TERMINATING SHORT OF SAID DELIVERY END OF THE MOLDING MEMBER AND HAVING IN THE UNINFLATED CONDITION A SUBSTANTIALLY UNIFORM OUTSIDE DIAMETER LESS THAN THE INSIDE DIAMETER OF SAID MEMBER TO ACCOMODATE SAID MOVEMENT OF THE UNCURED TUBING, SAID INFLATABLE ELEMENT HAVING A CONTINUOUS ANNULAR CIRCUMFERENTIALLY EXPANSIBLE AND CONTRACTIBLE WALL OF ELASTIC MATERIAL SUBJECT TO AXIAL GROWTH UNDER REPETITIVE INFLATIONS AND HEATING, A COUPLING CLOSURE STRUCTUTE MOUNTED WITHIN SAID MOLDING MEMBER AT SAID ENTRANT END THEREOF IN AXIALLY FIXED RELATION THERETO AND SEALINGLY SECURED TO THE ADJACENT OPEN END OF SAID INFLATABLE ELEMENT TO CLOSE THE SAME, SAID STRUCTURE HAVING AN OUTER PERIPHERAL SURFACE OF A DIAMETER LESS THAN THE INSIDE DIAMETER OF SAID MOLDING MEMBER FOR DISPOSITION WITHIN THE UNCURED TUBING AND HAVING A PASSAGE IN COMMUNICATION WITH SAID PERIPHERAL SURFACE AND THE OUTER ATMOSPHERE FOR VENTING THE INTERIOR OF THE UNCURED TUBING TO THE OUTER ATMOSPHERE, A SPACER BAR SECURED TO SAID STRUCTURE AND EXTENDING AXIALLY THEREFROM CENTRALLY WITHIN SAID INFLATABLE ELEMENT TO A POSITION SPACED AXIALLY BEYOND THE OTHER OPEN END OF THE INFLATABLE ELEMENT AND HAVING STOP MEANS THEREON AT SAID POSITION, AND A SECOND COUPLING CLOSURE STRUCTURE MOUNTED WITHIN SAID MOLDING MEMBER AT SAID DELIVERY END THEREOF AND SEALINGLY SECURED TO SAID OTHER OPEN END OF SAID INFLATABLE ELEMENT AND MOUNTED ON SAID SPACER BAR FOR AXIAL SLIDING MOVEMENT THEREON TOWARD SAID STOP MEANS TO ACCOMODATE SAID AXIAL GROWTH OF THE INFLATABLE ELEMENT, AND MEANS OPERATIVE TO HEAT THE WALL OF SAID MOLDING MEMBER DURING SAID INTERVAL OF REST OF THE UNCURED TUBING TO VULCANIZE THE TUBING IN SAID MOLDING MEMBER.
Claim 4
Dependent Claim
372 words
A VULCANIZING CHAMBER ASSEMBLY COMPRISING AN ELONGATED TUBULAR MOLDING MEMBER OF SUBSTANTIALLY UNIFORM INSIDE DIAMETER OPEN AT ITS ENTRANT AND DELIVERY ENDS FOR RECEIVING SUCCESSIVE DETERMINATE LENGTHS OF UNCURED TUBING OF VULCANIZABLE RUBBERY MATERIAL ADVANCED BY STEP-BY-STEP MOVEMENT THROUGH THE MOLDING MEMBER, INFLATABLE PRESSURE-APPLY MEANS WITHIN SAID MOLDING MEMBER FOR POSITIONING WITHIN THE UNCURED TUBING AND OPERATIVE TO PRESS THE WALL OF THE UNCURED TUBING RADIALLY OUTWARD AGAINST THE ADJACENT WALL OF SAID MOLDING MEMBER IN HEAT-TRANSFERRING RELATION THERETO DURING THE INTERVAL OF REST OF THE UNCURED TUBING IN SAID MEMBER, SAID PRESSURE-APPLYING MEANS COMPRISING AND ELONGATED TUBULAR OPEN-ENDED INFLATABLE ELEMENT EXTENDING FROM SAID ENTRANT END AND TERMINATING SHORT OF SAID DELIVERY END OF THE MOLDING MEMBER AND HAVING IN THE UNINFLATED CONDITION A SUBSTANTIALLY UNIFORM OUTSIDE DIAMETER LESS THAN THE INSIDE DIAMETER OF SAID MEMBER TO ACCOMODATE SAID MOVEMENT OF THE UNCURED TUBING, SAID INFLATABLE ELEMENT HAVING A CONTINUOUS ANNULAR CIRCUMFERENTIALLY EXPANSIBLE AND CONTRACTIBLE WALL OF ELASTIC MATERIAL SUBJECT TO AXIAL GROWTH UNDER REPETITIVE INFLATIONS AND HEATING, A COUPLING CLOSURE STRUCTUTE MOUNTED WITHIN SAID MOLDING MEMBER AT SAID ENTRANT END THEREOF IN AXIALLY FIXED RELATION THERETO AND SEALINGLY SECURED TO THE ADJACENT OPEN END OF SAID INFLATABLE ELEMENT TO CLOSE THE SAME, SAID STRUCTURE HAVING AN OUTER PERIPHERAL SURFACE OF A DIAMETER LESS THAN THE INSIDE DIAMETER OF SAID MOLDING MEMBER FOR DISPOSITION WITHIN THE UNCURED TUBING AND HAVING A PASSAGE IN COMMUNICATION WITH SAID PERIPHERAL SURFACE AND THE OUTER ATMOSPHERE FOR VENTING THE INTERIOR OF THE UNCURED TUBING TO THE OUTER ATMOSPHERE, A SPACER BAR SECURED TO SAID STRUCTURE AND EXTENDING AXIALLY THEREFROM CENTRALLY WITHIN SAID INFLATABLE ELEMENT TO A POSITION SPACED AXIALLY BEYOND THE OTHER OPEN END OF THE INFLATABLE ELEMENT AND HAVING STOP MEANS THEREON AT SAID POSITION, AND A SECOND COUPLING CLOSURE STRUCTURE MOUNTED WITHIN SAID MOLDING MEMBER AT SAID DELIVERY END THEREOF AND SEALINGLY SECURED TO SAID OTHER OPEN END OF SAID INFLATABLE ELEMENT AND MOUNTED ON SAID SPACER BAR FOR AXIAL SLIDING MOVEMENT THEREON TOWARD SAID STOP MEANS TO ACCOMODATE SAID AXIAL GROWTH OF THE INFLATABLE ELEMENT, AND MEANS OPERATIVE TO HEAT THE WALL OF SAID MOLDING MEMBER DURING SAID INTERVAL OF REST OF THE UNCURED TUBING TO VULCANIZE THE TUBING IN SAID MOLDING MEMBER.
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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) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |