Expansion compensating pipe coupling
US4168090A · kind A · utility
Inventor
Key dates
| Filing date | Dec 23, 1977 |
| Grant date | Sep 18, 1979 |
| Priority date | — |
| Expiry date | Dec 23, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L27/1275
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An expansion compensating pipe coupling including a circumferential head on one end of one pipe section with the head slidably received in a cylinder secured to one end of another pipe section. Means is provided for retaining the pipe head in the cylinder for checked axial movement to compensate for axial pipe expansion and contraction. One or more expansion rings may be provided on the pipe head for providing a fluid seal. The expansion rings may further be received in annular grooves in the head with passages leading from the bottom of the groove to the interior of the pipe section thereby utilizing the fluid pressure within the coupling to expand the expansion rings in good fluid seal engagement with the interior of the cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.