Air filters
US4595401A · kind A · utility
Inventor
Key dates
| Filing date | Aug 10, 1981 |
| Grant date | Jun 17, 1986 |
| Priority date | — |
| Expiry date | Aug 10, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B3/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In an air cleaner employing a pleated paper filter element in the form of a frustrum of a cone mounted in a tubular air cleaner casing having a first opening axially thereof communicating with the inside of said element at the relatively wide end of said frustrum and a second opening in the cylindrical wall of said casing communicating with the outside of said frustrum in the vicinity of the relatively narrow end thereof, the axis of said element is tilted relative to the axis of the cleaner casing away from said second opening, whereby the radial clearance between the filter element and said opening is increased for a given filter element without increasing the size of the casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.