Welding sleeve of thermoplastic material
US5532459A · kind A · utility
13Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1994 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Sep 21, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C65/3468
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The welding sleeve has a coil of a resistance wire forming two heating zones and is arranged near the inner circumference of the sleeve. Each heating zone has a region at the beginning and end in which the coil spacing is less than in the center region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.