Electrode with stretched heat-shrinkable outer insulator
US4737380A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 9, 1987 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | Jan 9, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/71
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A length of braided wire, having an outside diameter, is selected as is a length of heat-shrinkable tubing which has an initial inside diameter greater than the outer diameter of the braided wire. The braided wire is inserted into the tubing such that, at one end of the tubing, the tubing extends beyond the braided wire. The one end of the tubing is grasped without grasping the braided wire, and the one end is supported against movement in a vertical direction. A weight is attached to the other end of the tubing so that the tubing with the braided wire inserted will extend downwardly from the first end to the other end thereof. Heat is applied to the tubing starting at the one end and moving slowly downwardly to the other end. The heat causes the tubing to shrink and, simultaneously, the weight pulls the tubing downwardly to cause the tubing to stretch so that a tight-fitting insulating cover, having decreased wall thickness, is produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.