Tapered pipe joint
Abstract
Abstract A PIPE JOINT WHEREIN A TAPERED EXTERNAL SURFACE OF A PIPE END IS BONDED WITHIN A TAPERED INTERNAL SURFACE OF A FITTING END BY A SLEEVE OF SOLDER MATERIAL EXTENDING THE LENGTH OF THE TAPERED SURFACES. THE ANGLE OF THE INTERNAL TAPER IS GREATER THAN THE ANGLE OF THE EXTERNAL PIPE TAPER WITH RESPECT TO THE LONGITUDINAL AXIS OF THE PIPE JOINT SO THAT A LINE CONTACT IS FORMED BETWEEN THE TAPERED SURFACES. THE SOLDER MATERIAL IS IN THE FORM OF A PRE-FORMED TAPERED ANNULAR INSERT WHICH IS POSITIONED BETWEEN THE TAPERED SURFACES AND HAS A LENGTH SLIGHTLY GREATER THAN THE LENGTHS OF THE TAPERED SURFACES. FILLETS ARE FORMED FROM THE ENDS OF THE INSERT OF SOLDER MATERIAL AT EACH END OF THE JOINT.
Inventors
- 👤 Raymond F Nowosadko
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |