Compression joint
US5464258A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1994 |
| Grant date | Nov 7, 1995 |
| Priority date | — |
| Expiry date | Dec 8, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L13/0236
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to a compression joint for reinforcement and support over bent tubular components. According to the invention, a first sleeve (5) is applied around the bent tubular component, the inner surface (10) of the first sleeve being formed to fit closely around the tube at the point of reinforcement. This sleeve (5) is divided into at least two parts along axial sections and has an outer, substantially rotationally symmetrical surface (11). Around this sleeve (5), a second sleeve (9) with an inner rotationally symmetrical surface is arranged. The outer surface of this second sleeve (9) is adapted to receive a winding (14, 15) comprising several layers of strip or wire of memory metal. Before being wound around the second sleeve (9) at a temperature below the transition temperature of the memory metal, the strip or wire has been stretched to a suitable length to bring about a desired compressive stress in the joint after being wound on and a subsequent increase of the temperature of the winding (14, 15) above the transition temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.