Diffuser
US6776968B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2002 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Aug 29, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L9/03
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A diffuser includes a base portion and a lid portion. The diffuser is adapted to allow emanation of vapor from a burning block of combustible material and contains a block receiving portion elevated from a surface of the base portion. The block receiving portion has one or more grooves formed in a top surface of the block receiving portion and extending below the top surface of the block receiving portion. The base portion further includes apertures forming channels extending from within the base portion to an outer surface of the base portion. The lid portion is preferably substantially pyramidal in shape and has an apex at an end remote from the base portion. The lid portion further includes apertures positioned towards the apex. In use, a burning block of combustible material, impregnated with fragrance, is placed on the block receiving portion, and the lid portion is placed over the block. The base and lid apertures, together with the grooves in the block receiving portion, serve to optimize the air flow within the diffuser, thus optimizing emanation of the fragrance from the block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.