Invention Grant
- Patent Title: Neutral displacement wick
- Patent Title (中): 中性排液芯
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Application No.: US11765538Application Date: 2007-06-20
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Publication No.: US07731102B2Publication Date: 2010-06-08
- Inventor: Bennett C. Ward , Wolfgang Broosch , Bernhard Kutscha
- Applicant: Bennett C. Ward , Wolfgang Broosch , Bernhard Kutscha
- Applicant Address: US VA Colonial Heights
- Assignee: Filtrona Richmond, Inc.
- Current Assignee: Filtrona Richmond, Inc.
- Current Assignee Address: US VA Colonial Heights
- Agency: Hunton & Williams
- Main IPC: A24F25/00
- IPC: A24F25/00

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.
Public/Granted literature
- US20070295831A1 Neutral Displacement Wick Public/Granted day:2007-12-27
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