Twist and lock filter housing with anti-rotation stop
US6436162B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2000 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Mar 22, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2265/021
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air filter housing (12) includes twist and lock structure (46) having a first position (FIGS. 5, 6) permitting axial movement (120) of a cover (44) and base (38) relative to each other, and being rotatable in a first direction (48) from the first position (FIG. 6) to the second position (FIG. 7), and in the second position (FIG. 7) preventing axial movement of the base (38) and cover (44) relative to each other, and being rotatable in a second opposite direction (78) from the second position (FIG. 7) to the first position (FIG. 6). Anti-rotation lock structure (80) provides a rotational retention force holding the twist and lock structure (46) in the second position (FIG. 7).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.