Vibratory welding of battery components
US4259419A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1979 |
| Grant date | Mar 31, 1981 |
| Priority date | — |
| Expiry date | Aug 17, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7126
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Thermoplastic battery cover and container piece parts are fused together using vibratory energy, particularly ultrasonic welding, in which the horn has a depending skirt extending along an outer wall of the container and which serves to maintain the cover and container in mutual alignment and simultaneously contain the flow of the melt (flash). In another aspect, a particular interference joint between the components is described featuring a continuous ramp of 50-70 degrees and producing an interference fit for an improved weld. The invention is also directed to a cell or battery formed according to the method of the invention, as well as the horn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.