High pressure plug coupling
US5950679A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1998 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Feb 10, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L37/1215
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention provides a high pressure plug coupling for providing a quick, fluid tight connection to a fluid port having internal threads. The high pressure plug coupling includes a generally hollow, exterior sleeve, with a hollow cylindrical piston slideably disposed within the exterior sleeve. A split collet assembly is connected to an end of the piston and is moveable therewith relative to the exterior sleeve. The split collet assembly includes a distal end portion that is radially expandable and contractable, with an interior surface of the distal end portion being tapered. An expansion pin is moveably disposed within the collet assembly and the piston for expanding the distal end portion. The expansion pin includes a frustum-shaped end portion adjacent to the distal end portion, with the frustum-shaped end portion being engaged with the tapered interior surface when the distal end portion is radially expanded. The frustum-shaped end portion of the expansion pin acts like a wedge, forcing the collets radially outward and into engagement with the internal threads of the fluid port. Further, since the frustum-shaped end portion is engaged with the tapered surface at the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.