Pipework
US4652020A · kind A · utility
11Cited by
8References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1985 |
| Grant date | Mar 24, 1987 |
| Priority date | — |
| Expiry date | Mar 11, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49391
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pipework junction (10, 11) has internal insulation to limit the effect of thermal shock in the form of a two part (14, 15) internal sleeve in which the parts of the sleeve are joined (34) and are, for the most part of their external surfaces, spaced from the junction by a small clearance (20) adequate to ensure that they do not lock to the junction when subjected to thermal shock. Piston rings (62) may be provided to restrain flow along the small clearance and the sleeve may be stabilized in the junction by having an expanded part (63) engaging a recess (64), which also serves to restrain flow along the small clearance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.