Disposable air filter assembly and method of making same
US4619677A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1985 |
| Grant date | Oct 28, 1986 |
| Priority date | — |
| Expiry date | Dec 13, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49604
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A disposable air filter assembly is provided for use with, but not limited to, an internal combustion engine. The filter assembly includes a housing having a substantially spiral interior air flow passageway. The housing is of molded construction whereby the end walls thereof are initially integral with an intervening outer wall but subsequently a section of one of the end walls is severed from the remainder of the housing exposing the interior passageway. A filter member, conforming substantially to the configuration of at least a portion of the passageway is inserted therein. Subsequent to the filter member being inserted into the passageway, the separated end wall section is re-attached to the remainder of the housing. An inlet to the interior passageway is provided on the exterior of the housing whereby the air flow is in a substantially tangential direction. An outlet for the passageway downstream of the inlet is provided which communicates with the intake manifold of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.