Electrically weldable socket for joining pipe members
US4530521A · kind A · utility
46Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1984 |
| Grant date | Jul 23, 1985 |
| Priority date | — |
| Expiry date | Mar 22, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C65/348
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A socket for joining the ends of conduits, pipe or the like comprising a body of thermoplastic material in which is embedded, in a helical coil, a resistance wire strand formed of a plurality of juxtaposed individual thin wire elements, the wire elements being in part spaced from one another, to form gaps allowing for expansion of or movement of the wire elements without overall expansion or movement of the strand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.