Cooled and wetted redundant seal tube fitting
US5890746A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1996 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L19/025
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tube coupling assembly has independent primary and secondary sealing elements. The coupling assembly includes first and second coupling members which define a fluid passage therethrough. The coupling members are arranged relative to one another so as to define a contact seal therebetween. An annular fluid path extends between the contact seal and the fluid passage, and a seal element, such as an O-ring is disposed in said fluid path. Accordingly, the seal element is always in contact with, and thus cooled by, the fluid in the passage. The coupling assembly also includes a coupling nut disposed over a portion of one of the coupling members and threadingly engaging the other coupling member to retain the coupling members together. A plurality of resilient fingers is provided on one of the coupling members, and a plurality of grooves is formed in the coupling nut. The fingers are received in the grooves so as to oppose rotational displacement of the coupling nut from its assembled position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.