Neutral displacement wick

US7731102B2 · kind B2 · utility

Assignee

• Filtrona Richmond, Inc. · US

Inventors

• Bennett C. Ward · Charlotte, US
• Wolfgang Broosch · Schwarzenbek, DE
• Bernhard Kutscha · Reinbek, DE

Key dates

• Filing date: Jun 20, 2007
• Grant date: Jun 8, 2010
• Expiry date: Jun 20, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49826
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Aspects of the invention include an air freshener device that emits fragrance through the evaporation of a fragrance-containing fluid comprising: a container, comprising a particular volume of the fragrance-containing fluid; a wick disposed partially in, and partially out of the fragrance-containing fluid, the wick having an immersion section immersed in the fluid so as to displace a displacement volume of fluid and a non-immersion section extending outward from a surface of the fluid, the immersion and non-immersion section being disposed on opposite lateral ends of the wick; the wick further comprising a displacement portion and a wicking portion, the displacement portion being configured to displace a desired first volume of fluid, the wicking portion being configured to wick a second volume of fluid; the displacement portion and the wicking portion designed to achieve a desired ratio between the displaced first volume of fluid and the wicked second volume of fluid.