Patent US4637396A successfully refreshed from Google Patents.
US3152618A
Expired / Lapsed
US
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Flexible conduit
Assignee: Day International Corp
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Filing: 1959-03-30
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Granted: 1964-10-13
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Expires: 1979-03-30
Abstract
No abstract record available.
Inventors
- 👤 Edward M Rothermel
- 👤 Jr Russell B Waddell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:28
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/18; F; F16; F16L; F16L11/00; F16L11/04; F16L11/11; F16L11/112; B29K; B29K2021/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
AS A NEW PRODUCT OF MANUFACTURE A FLEXIBLE REINFORCED CONDUIT COMPRISING A CIRCUMFERENTIAL REINFORCING MEMBER HAVING AXIALLY SPACED COILS, AND A FLEXIBLE ELASTOMERIC TUBULAR MEMBER HAVING A NORMAL OUTER DIAMETER LESS THAN THE INNER DIAMETER OF SAID REINFORCING MEMBER, SAID TUBULAR MEMBER BEING EXPANDED BEYOND ITS NORMAL OUTER DIAMETER AT THE INNER SURFACES OF SAID COILS AND BONDED THERETO, AND DEPENDING CONVOLUTIONS
Claim 2
Dependent Claim
62 words
AS A NEW PRODUCT OF MANUFACTURE A FLEXIBLE REINFORCED CONDUIT COMPRISING A CIRCUMFERENTIAL REINFORCING MEMBER HAVING AXIALLY SPACED COILS, AND A FLEXIBLE ELASTOMERIC TUBULAR MEMBER HAVING A NORMAL OUTER DIAMETER LESS THAN THE INNER DIAMETER OF SAID REINFORCING MEMBER, SAID TUBULAR MEMBER BEING EXPANDED BEYOND ITS NORMAL OUTER DIAMETER AT THE INNER SURFACES OF SAID COILS AND BONDED THERETO, AND DEPENDING CONVOLUTIONS
References Cited (Backward Citations)
US1937069A
Cited
US2508774A
Cited
US2766806A
Cited
US2739616A
Cited
US2961007A
Cited
US2780274A
Cited
US2797730A
Cited
US2837121A
Cited
US2894536A
Cited
US2898941A
Cited
US2936812A
Cited
US2898942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |