Conduit seal
Abstract
Abstract A device is disclosed for sealing abutted spirally corrugated conduits. The corrugations of each section of spirally corrugated conduits terminate on a bias. When two sections of spirally corrugated conduit are abutted, the conduits are rotated to obtain registration between the corrugations of one conduit with the corrugations of the abutted conduit, presenting a seemingly endless plurality of spirally wound corrugations. A plurality of sealing members, each having an undulating lower surface, are keyed to one another with the resulting plurality of attached members wound about the abutting conduits. A tensionable band is secured about the outer surfaces of the members and aligned with the abutted conduits. The band is tensioned to compress the members, thereby sealing the members against the abutting conduits and against each other. The undulations on the inner surfaces of the members conform to the undulating surface of the conduit and thereby effect a seal between the abutting conduits.
Inventors
- 👤 G Campbell
Bibliographic Details
Claims Analysis
Total Claims: 9References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |