US3618327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Caisson structure and pier construction methods
Assignee: Morrison Knudsen Co Inc
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Filing: 1968-11-15
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Granted: 1971-11-09
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Expires: 1988-11-15
Abstract
Abstract METHODS FOR OVER-WATER CONSTRUCTION OF BRIDGE PIERS, AND THE LIKE, ESPECIALLY ADAPTED FOR USE AT DEEP-WATER, SHALLOW-OVERBURDEN SITES UTILIZING A UNITARY FULL-DEPTH CAISSION WHICH IS PREFABRICATED OFF SITE. FLOATATION AND BALLAST CHAMBERS IN THE CAISSION FACILITATE MOVEMENT TO LOCATION, ACCURATE PLACEMENT ON SITE, AND INITIAL SINKING. A PLURALITY OF FULL-DEPTH CAISSIONS ARE INTERLOCKED LONGITUDINALLY DURING ON-SITE ASSEMBLY TO PRODUCED A PIER OF DESIRED CROSS-SECTIONAL CONFIGURATION. LENGTHS OF INDIVIDUAL CAISSIONS ARE SELECTED TO CONFORM TO SUBTERRANEAN SUPPORT TOPOGRAPHY. A WEIGHT DISTRIBUTION BLOCK IS CASTANCHORED TO THE CAISSIONS.
Inventors
- 👤 Joseph P Frein
- 👤 Thomas Kinter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:21
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |