Heat weldable, thermoplastic fitting
US3943334A · kind A · utility
49Cited by
11References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1974 |
| Grant date | Mar 9, 1976 |
| Priority date | — |
| Expiry date | Mar 8, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C66/73715
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
To permit efficient heat welding of pipe fittings, and the like, of thermpolastic material to thermoplastic pipes, by electrically heating of the fitting, the fitting is made in two concentric portions, the inner portion having a heating wire applied to the outside thereof, the heating wire and inner portion being covered by the outer portion, for example injected thereover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.