Stab-type coupling with collet having locking ribs and rotation prevention member
US6371531B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 1999 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | May 28, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L37/0926
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A coupling receives a non-metallic tube (12) in an opening of a coupling body (10). A seal assembly (22, 24) disposed inside the coupling body (10) seals between the body (10) and the tube (12). A collet (16) disposed in the coupling body (10) includes a tapered external surface (50) that engages a tapered wall in the coupling body (10) to resist pull-out of the tube (12). The collet (16) includes an inner toothed (52) surface for gripping the tube (12) and has a split (70) or slots (54) that allow the collet (16) to radially expand and contract. A rotation prevention member, which in a preferred embodiment is a longitudinal rib (56) extending inwardly from the collet (16), limits relative rotation between the collet (16) and the tube (12). Moreover, edges (74) of the split (70) are rounded so that the collet can rotate relative to the coupling body (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.