Band seal pipe coupling with adjustable fastening means
Abstract
Abstract A COUPLING AND CLAMPING DEVICE FOR CONNECTING PLAINEND PIPES IN END-TO-END RELATION, INCLUDING A METAL SLEEVE BAND HAVING OVERLAPPED END EXTREMITIES AND MEANS FOR ANCHORING AN INNER SEALING SLEEVE THEREIN AGAINST AXIAL DISPLACEMENT, THE BAND BEING COMPRESSIBLE BY FLEXIBLE STRAP MEMBERS CONNECTED AT THEIR ENDS BY A THREADED BOLT AND ASOCIATED NUT. THE BOLT EXTENDS THROUGH ROCKABLE PLASTIC TRUNNIONS AT THE STRAP ENDS, AND HAS A HEAD PORTION WITH AN INNER TRANSVERSELY CURVED FLANGE SO AS TO APPLY CLAMPING FORCES ADJACENT THE ENDS OF THE TRUNNION. THE BOLT ALSO HAS A FRANGIBLE THREADED END SECTION WHICH CAN BE BROKEN AWAY AFTER THE COUPLING IS INSTALLED. AN ADDITIONAL FEATURE INCLUDES A KEEPER BAR WHICH CAN BE MOUNTED OVER THE THREADED ENDS OF TE STRAP TIGHTENING BOLTS, THIS KEEPER HAVING STOPS ENGAGEABLE WITH THE ASSOCIATED NUTS TO RETAIN THEM AGAINST TURNING, WHEN THE BOLT IS ROTATED. THIS KEEPER ALSO SERVES TO ALLOCATE THE STRAPS ON THE SLEEVE BAND WITH THE PROPER SPACING.
Inventors
- 👤 Ben B Garrett
Bibliographic Details
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |