Fragrant scented air filter
US4604114A · kind A · utility
40Cited by
6References
13Claims
0Family size
Inventor
Key dates
| Filing date | Aug 14, 1985 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Aug 14, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/905
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fragrant scented air filter particularly adapted for use in conjunction with interior building/air conditioning systems which includes a polygonal frame of a U-shaped inwardly opening cross-section defined by a bight portion and a pair of legs, a pad of air permeable, porous, fibrous filtering material having a peripheral edge portion bordered by the frame, and at least two solid rods of fragrant scented material spanning the frame in embedded relationship to the pad and in spaced parallel relationship to each other whereby air can freely pass the same with minimum velocity reduction and maximum fragrance absorption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.