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:
May. 12, 1992
Filed:
Oct. 02, 1991
Peter Brownell, Exeter, RI (US);
Allied-Signal Inc., Morristown, NJ (US);
Abstract
A method of applying a wettant to an air laid, non-woven, fibrous filter web or other filter media includes the steps of atomizing the wettant into relatively small particles having a diameter equal to or less than about 1/2 of the diameter of the smallest fiber in the web or mat, and entraining the particles in a carrier air stream. The carrier air stream is forced through the batt at a face velocity substantially greater than the face velocity that the filter media sees when it is used to filter contaminant particles in use. Accordingly, dispersal of the wettant throughout the batt is assured, and migration of the particles into the effluent air stream when the batt is used in filtering is reduced or eliminated.