Apparatus for heat curing electrical insulation provided on a central electrical conductor of an electrical cable
US4043722A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 1975 |
| Grant date | Aug 23, 1977 |
| Priority date | — |
| Expiry date | May 9, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/3462
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for and method of heat curing elastomeric electrical insulation on a central electrical conductor of an electrical cable is provided and the apparatus includes an outer housing which is adapted to contain means for curing the exterior portion of the insulation from its outer portion inwardly and an electrical induction coil for curing the insulation from its inner portion outwardly. The coil is supported concentrically within the housing with the coil being adapted to receive the conductor therethrough with its insulation thereon and the coil serves to heat the conductor which in turn transmits heat to the inner portion of the insulation to provide the heat curing thereof from the inner portion radially outwardly. A magnetic flux shield is provided between the housing and the coil and serves to provide a path of least resistance for the lines of magnetic flux generated by the coil to thereby assure efficient operation of the induction coil yet without detrimental heating of the outer housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.