Filtration apparatus having stress relief groove
US5269917A · kind A · utility
76Cited by
16References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1992 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Feb 28, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filtration apparatus formed by ultrasonically welding a top section to a base section with a filtration membrane interposed there between. One of the top section or base section has a plurality of radially extending energy directors and the other of the top section or base section has a circumferentially extending energy director in contact with the radially extending energy directors where ultrasonic welding is effected. The groove cosiverts some of the peeling load into texisle load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.