Molding method for splicing electrical cable
US3970735A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1975 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Jan 31, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/14557
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for making splices in high voltage electrical cable and particularly for replacing relatively short sections of previously removed, original insulation. Ends of the original insulation adjoining the section are tapered and fresh insulating material is placed over the section and heated to fluidize it. Pressure is applied to intimately combine the original cable insulation and the newly added splice insulation to thereby effect an interfacing of the original and newly added insulating material. The new insulating material is placed inside the cavity of a mold which includes small apertures communicating the cavity with the exterior and being spaced over the length of the cavity. The fresh insulating material is pressurized by forcing additional material into the cavity to thereby vent entrapped air through the apertures to the exterior. Some of the apertures are selectively opened and closed to effect the venting while propagating the insulating material and the applied pressure throughout the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.