Plastic coupling
Abstract
Abstract A coupling comprises two sections molded of polymeric plastic material which is tough and hard but possesses a small degree of elasticity, one section having a tubular interior frustoconical recess at one end with which mates an exterior frustoconical portion on one end of the other section, whereby said sections can be frictionally connected to each other with a fluid-tight joint and can be easily separated, by merely relatively rotating them and respectively pressing them together and pulling them apart. One or each section may have a spring closed valve that is opened when the sections are connected. Also, each section may have an integral element coactive with the element on the other section for separably locking the sections together.
Inventors
- 👤 Frank M Iannelli
Bibliographic Details
Claims Analysis
Total Claims: 1References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |