Making a plastic tank with an integrity-verifiable weld joint
US10696448B1 · kind B1 · utility
1Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2017 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Dec 16, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7126
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic tank is comprised of two parts, a base and a top, that are permanently joined to each other by welding at a circumferential joint formed by two mating flanges of the parts. Fusion weld elements are captured on the faying surfaces of the flanges of the assembled parts, and the elements are melted by internal heating of metal portions of the elements. Two spaced apart circumferential welds which define an annular space are formed. The pressure within the annular space is changed in a test procedure to verify the integrity of the welds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.