Patent US3208478A successfully refreshed from Google Patents.
US3208478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic drainage tube
Assignee: ALEC SABIN BAINES
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Filing: 1963-03-27
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Granted: 1965-09-28
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Expires: 1983-03-27
Abstract
No abstract record available.
Inventors
- 👤 Baines John Kenneth Wadsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:31
CPC Classifications
E; E02; E02B; E02B11/00; E02B11/005; F; F16; F16L; F16L9/00; F16L9/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
145 words
RESILIENTLY FLEXIBLE PLASTICS STRIP MATERIAL ONE LONGITUDINAL EDGE OF WHICH IS FORMED WITH A ROW OF SPACED TABS PROTRUDING OUTWARDLY FROM THE EDGE, EACH TAB HAVING A HEAD ELONGATED IN THE DIRECTION PARALLEL TO THE STRIP EDGE AND JOINED TO THE STRIP EDGE BY AN INTEGRAL NECK DEFINED BY UNDERCUT RECESSES AT EACH SIDE OF THE BASE OF THE HEAD, AND IS FORMED ADJACENT TO ITS OTHEREDGE WITH A ROW OF CORRESPONDINGLY SPACED ELONGATED SLOTS EACH OF WICH EXTENDS PARALLEL TO THE EDGE OF THE STRIP AND IS LONG ENOUGH AT ITS INNER EDGE TO ALLOW THE HEAD OF A CO-OPERATING TAB TO BE PASSED THROUGH IT, EACH END OF EACH SLOT BEING OF STEPPED FORM AFFORDONG A RIGHT-ANGLED STEP BETWEEN ITS LONG INNER SIDE AND ITS SHORTER OUTER SIDE, THE LENGTH OF THE OUTER SIDE OF THE SLOT BETWEEN THE TWO STEPS BEING SLIGHTLY
Claim 2
Dependent Claim
145 words
RESILIENTLY FLEXIBLE PLASTICS STRIP MATERIAL ONE LONGITUDINAL EDGE OF WHICH IS FORMED WITH A ROW OF SPACED TABS PROTRUDING OUTWARDLY FROM THE EDGE, EACH TAB HAVING A HEAD ELONGATED IN THE DIRECTION PARALLEL TO THE STRIP EDGE AND JOINED TO THE STRIP EDGE BY AN INTEGRAL NECK DEFINED BY UNDERCUT RECESSES AT EACH SIDE OF THE BASE OF THE HEAD, AND IS FORMED ADJACENT TO ITS OTHEREDGE WITH A ROW OF CORRESPONDINGLY SPACED ELONGATED SLOTS EACH OF WICH EXTENDS PARALLEL TO THE EDGE OF THE STRIP AND IS LONG ENOUGH AT ITS INNER EDGE TO ALLOW THE HEAD OF A CO-OPERATING TAB TO BE PASSED THROUGH IT, EACH END OF EACH SLOT BEING OF STEPPED FORM AFFORDONG A RIGHT-ANGLED STEP BETWEEN ITS LONG INNER SIDE AND ITS SHORTER OUTER SIDE, THE LENGTH OF THE OUTER SIDE OF THE SLOT BETWEEN THE TWO STEPS BEING SLIGHTLY
Claim 3
Dependent Claim
24 words
STRIP MATERIAL AS CLAIMED IN CLAIM 1, IN WHICH THE LENGTH OF EACH SLOT IS GREATER THAN THE CORRESPONDING LENGTH OF THE COOPERATING TABS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |