Patent US3557564A successfully refreshed from Google Patents.
US3557564A
Expired / Lapsed
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Universal offshore pipeline riser clamp assembly
Assignee: Brown and Root Inc
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Filing: 1969-04-16
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Granted: 1971-01-26
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Expires: 1989-04-16
Abstract
Abstract A CLAMPING APPARATUS HAVING AT LEAST TWO SLEEVE-LIKE HINGED CLAMPS WHICH ARE ADJUSTABLY INTERCONNECTED SO AS TO BE ROTATABLE ABOUT A COMMON AXIS TO PROVIDE UNIVERSAL FREEDOM OF MOVEMENT TO ELEMENTS LOOSELY CLAMPED THEREIN. EACH SLEEVE-LIKE CLAMP MAY BE FITTED WITH TO TOGGLE BOLT ASSEMBLY TO PROVIDE EASE IN SECURING, RELEASING AND ADJUSTING THE CLAMPED ELEMENTS. THE SURFACES OF THE CLAMPS WHICH CONTACT THE CLAMPED ELEMENTS MAY BE LINED WITH AN ELECTRICAL INSULATING MATERIAL.
Inventors
- 👤 Ferdinand R Hauber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:34
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/01; E21B43/0107; F; F16; F16L; F16L1/00; F16L1/12; F16L1/14; F16L1/15; F16L3/00; F16L3/24; F16L3/245; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/71; Y10T403/7129; Y10T403/7141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |