Heat fusion fitting
US6998588B2 · kind B2 · utility
8Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2003 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Nov 14, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1393
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for the manufacture of a heat fusion fitting, which comprises i) forming a body (1) comprising at least a first layer of a first cross-linked polymeric material, ii) embedding or partly embedding a ferromagnetic heating element (11, 12) in a second polymeric material (13, 14) to form an insert (7, 8), the ferromagnetic heating element (11, 12) having a Curie temperature equal to or greater than the crystalline melting point or softening point of the second polymeric material (13, 14), and iii) assembling the body and the insert (7, 8) to form the fitting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.