The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 2010
Filed:
Jun. 21, 2007
David C. Belongia, Burlington, WI (US);
Mark E. Wefler, Racine, WI (US);
David C. Belongia, Burlington, WI (US);
Mark E. Wefler, Racine, WI (US);
S.C. Johnson & Son, Inc., Racine, WI (US);
Abstract
A diffusion device includes a housing and an opening in the housing adapted for insertion of a container having an active material therein and a wick extending therefrom. The device further includes a heater disposed in a rear portion of the housing and spaced from the wick when a container is inserted into the housing. A vent is disposed in a front portion of the housing. An active material diffusion-interference member is disposed directly above and axially aligned with the wick when the container is inserted into the device, wherein the diffusion-interference member inhibits diffusion of the active material from the housing such that heat generated by the heater is trapped around the wick, thus increasing volatilization and dispersion of the active material from the diffusion device as compared to a diffusion device that does not have a diffusion-interference member.