Air filters including filters configured for both radial and axial sealing
US5415677A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1993 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | Dec 28, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2279/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A metal, U-shaped, annular cap is placed over one end of a cylindrical body of filter material. The metal end cap is retained on the body of filter material by a layer of plastisol and has adhered to the outside surface thereof an annular gasket made of either polyurethane or a closed or opened cell foam. The gasket presents an axially extending sealing surface for effecting a radial seal with a sealing flange in a filter housing. In accordance with another embodiment of the invention, a second annular gasket is provided which is adhered to the surface of the U-shaped end cap and extends axially therefrom. The second annular gasket has a radial surface for effecting an axial seal with a filter housing configured for axial sealing with filter elements disposed therewithin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.