Coupling device for tubular members
Abstract
Abstract A CONNECTOR FOR COUPLING A PAIR OF TUBULAR MEMBERS IN END-TO-END RELATIONSHIP COMPRISING A CONNECTOR MEMBER OF ELONGATED CHANNEL SHAPE HAVING A BASE PORTION AND A PAIR OF LEG PORTIONS ADAPTED FOR INSERTION INTO THE OPEN ENDS OF THE TUBULAR MEMBERS. A PLURALITY OF SET SCREWS ARE THREADED THROUGH THREADED OPENINGS IN OPEN LEG OF THE CONNECTOR MEMBER FOR TIGHTENING INTO ENGAGEMENT WITH THE INSIDE FACE OF THE OTHER MEMBER TO THEREBY CAUSE THE LEG PORTIONS TO BE EXPANDED INTO TIGHT GRIPPING ENGAGEMENT WITH THE INSIDE SURFACE OF THE TUBULAR MEMBERS. ACCESS TO THE SET SCREWS IS PROVIDED BY OPENINGS IN THE WALLS OF THE TUBULAR MEMBERS. THE BASE PORTION OF THE CONNECTOR MEMBER IS PROVIDED WITH A LONGITUDINALLY EXTENDING SLOT TO THEREBY WEAKEN THE BASE PORTION TO FACILITATE EXPANSION OF THE LEG PORTIONS.
Inventors
- 👤 Adolph A Wagner
Bibliographic Details
Claims Analysis
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |