Patent US3326006A successfully refreshed from Google Patents.
US3326006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pile shells and couplings
Assignee: TECON CORP
•
Filing: 1964-05-01
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Granted: 1967-06-20
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Expires: 1984-05-01
Abstract
No abstract record available.
Inventors
- 👤 Wadsworth W Mount
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:07
CPC Classifications
E; E02; E02D; E02D7/00; E02D7/28; E02D7/30; E02D5/00; E02D5/22; E02D5/52; E02D5/66; E02D5/665; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49876; Y10T29/49908; Y10T29/49915; Y10T29/49917; Y10T29/49918; Y10T403/00; Y10T403/49
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
IN A PILE ARRANGEMENT OF NESTED SHELLS TO BE DRIVEN BY A MANDREL, THE COMBINATION COMPRISING AN OUTER TUBULAR SHELL HAVING DRIVING RING MEANS AT THE BOTTOM PORTION THEREOF FOR RECEIVING A DRIVING FORCE, AND AN INNER TUBULAR SHELL POSITIONED WITHIN THE DRIVING RING MEANS AND OF A LESSER CIRCUMFERENTIAL DIMENSION THAN THE OUTER SHELL SO THAT THE INNER SHELL MAY TELESCOPE THROUGH THE DRIVING RING MEANS AND THE OUTER SHELL FOR AT LEAST A SUBSTANTIAL PORTION OF THE LENGTH OF THE INNER SHELL, THE DRIVING RING MEANS RADIALLY ENGAGING THE UPPER PORTION OF THE INNER SHELL TELESCOPED THEREIN TO PROVIDE A TIGHT SEAL BETWEEN THE DRIVING RING MEANS AND THE UPPER PORTION OF THE INNER SHELL.
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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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |