Rigid pipe connector with lock elements and method of making the same
US4124232A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 4, 1977 |
| Grant date | Nov 7, 1978 |
| Priority date | — |
| Expiry date | May 4, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49945
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pipe connector has a pin initially stabbed into a box, the pin and box then being axially loaded together at confronting transverse surfaces while the pin and box are pressurized to expand the box and compress the pin, so that when the pressure is relieved a pressure energized shrink fit is provided between the pin and box and the connector is rendered rigid to enhance tensile, compressive and bending strength and provide a fluid tight joint useful in making up lengths of pipe such as piles or pipelines, locking elements or coengageable ratchet teeth or gripping means on the tapered surfaces, automatically locking the pin and box together to prevent separation of the transverse surfaces and hold the pin in compression and the box in tension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.