Tube coupling and method of producing separation prevention ring for the tube coupling
US6174002A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Jun 16, 1999 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Jun 16, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L37/0915
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tube coupling according to the present invention comprises a coupling body, a separation prevention ring which is disposed in the coupling body to bite into the outer wall of a tube body fitted into the coupling body so to prevent the tube body from coming out, and a release ring which is disposed in the coupling body so to be movable in an axial direction within a predetermined range and releases the separation prevention ring from the tube body by pushing the separation prevention ring, wherein the separation prevention ring comprises a ring portion which contacts a back ring disposed in the coupling body; pushing portions which are radially formed in a large number within the ring portion, has a circular shape, have grooves which extends from the outside of the ring portion to the inside, and are pushed by an inside end of the release ring; and projections which are respectively formed at the tips of the pushing portions and pulled out of the outer wall of the tube body when they are pushed by the inside end of the release ring in a state fitted in the outer wall of the tube body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.