Patent US3155757A successfully refreshed from Google Patents.
US3155757A
Expired / Lapsed
US
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Method of and apparatus for making and joining spirally corrugated rubber tubing
Assignee: Individual
•
Filing: 1959-10-16
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Granted: 1964-11-03
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Expires: 1979-10-16
Abstract
No abstract record available.
Inventors
- 👤 Vance M Kramer
- 👤 Lawrence W Carlton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:50
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/18; B29K; B29K2021/00; Y; Y10; Y10S; Y10S264/00; Y10S264/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN THE PROCESS OF MAKING CORRUGATED TUBING ON AN ELONGATED INTERNAL FORM HAVING SPIRALLY CORRUGATED AND SMOOTH SURFACED PORTIONS THE COMBINATION OF STEPS WHICH COMPRISES TELESCOPING A TUBE BLANK ONTO THE FORM TO SUPPORT ONE PORTION OF THE BLANK BY AND ON THE CORRUGATED PORTION OF THE FORM AND TO SUPPORT ANOTHER PORTION OF THE BLANK BY AND ON THE SMOOTH PORTION OF ONTO THE FORM, WRAPPING A FLEXIBLE ELEMENT SPIRALLY ABOUT THE ONE PORTION OF THE TELESCOPED BLANK UNDER TENSION WITH SUCCESSIVE
Claim 2
Dependent Claim
83 words
IN THE PROCESS OF MAKING CORRUGATED TUBING ON AN ELONGATED INTERNAL FORM HAVING SPIRALLY CORRUGATED AND SMOOTH SURFACED PORTIONS THE COMBINATION OF STEPS WHICH COMPRISES TELESCOPING A TUBE BLANK ONTO THE FORM TO SUPPORT ONE PORTION OF THE BLANK BY AND ON THE CORRUGATED PORTION OF THE FORM AND TO SUPPORT ANOTHER PORTION OF THE BLANK BY AND ON THE SMOOTH PORTION OF ONTO THE FORM, WRAPPING A FLEXIBLE ELEMENT SPIRALLY ABOUT THE ONE PORTION OF THE TELESCOPED BLANK UNDER TENSION WITH SUCCESSIVE
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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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |