Pipe joint made of resin
US5743572A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1997 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Jul 18, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L47/041
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a pipe joint made of resin which is preferably used in, particularly, piping for a liquid having high purity or ultrapure water. In the pipe joint made of resin, a pipe receiving port 11 of a joint body made of resin 1, an inner ring 3, and a pressing ring 5 form primary, secondary, and tertiary sealing portions 10, 20, and 30. The primary sealing portion 10 is formed by a pressingly contacting area between a primary seal receiving face 13 of the joint body 1 and a primary seal urging face of the inner ring 3, thereby generating a seal contact pressure in an axial direction. The secondary sealing portion 20 is formed by pressingly contacting areas between secondary seal inner and outer receiving faces 15 and 16 of the joint body 1 and secondary seal inner and outer urging faces 36 and 37 of the inner ring 3, thereby generating a seal contact pressure in a radial direction. The tertiary sealing portion 30 is formed by a pressingly contacting area between a tertiary seal receiving face 17 of the pipe receiving port 11 and a tertiary seal urging face 71 of the pipe 7, thereby generating a seal contact pressure in an axial direction. According to the in…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.