Pipeline expansion joint having a smooth bore
US3936080A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 1974 |
| Grant date | Feb 3, 1976 |
| Priority date | — |
| Expiry date | May 30, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pipeline expansion joint having a smooth bore, for use with pipelines into which flow slurries containing solids in suspension, comprises a first sleeve open at both ends and having a tapered portion formed in the inner wall of one of its ends extending at a small angle with the axis of the first sleeve and over a substantial portion of the length of the first sleeve from its inside diameter to substantially its outside diameter, and a second sleeve also open at both ends and having a first portion of substantially the same inner diameter as the outer diameter of the first sleeve and telescopically mounted on the above-mentioned one end of the first sleeve, a second portion of the same diameter as the first sleeve, and an intermediate portion expanded at a small angle with the axis of the second sleeve over a substantial portion of its length from the second to the first portion of such second sleeve. The above expansion joint has a smooth bore throughout with no area of abrupt changes in order to prevent turbulence and the resulting wear due to the solids in suspension in the slurries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.