Plastic transmission filter
US7407057B2 · kind B2 · utility
5Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2003 |
| Grant date | Aug 5, 2008 |
| Priority date | — |
| Expiry date | Feb 9, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/0415
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A plastic transmission filter (1) composed of mating upper (2) and lower (3) shells of synthetic resin material with at least one set of registering weld posts (10) extending between inner surfaces of the upper and lower shells; a fluid pervious centertube (4) interposed between the mating shells around the weld posts, and a filter material (5) wrapped around the centertube to form a bag filter. The filter assembly can be welded together in a single vibration welding operation and provides enhanced flow of transmission fluid by avoiding flow restrictions caused by prior art reinforcement poles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.