Gas phase permeable filter
AssigneeD-Mark, Inc.
InventorsJames W. Kasmark, Jr., Myron L. Dooley, Arthur H. Jones
Life of this patent
Estimating the term…
Abstract
Described is a gas phase permeable filter and method for making same comprising the steps: 1. Providing a gas phase permeable substrate having opposite surfaces; 2. Applying an adhesive to one or both of the surfaces of the substrate; 3. Applying particulate gas phase odor-removing means to the adhesive coated surface or surfaces of the substrate; 4. Drying the adhesive; and 5. Assembling the substrate in a desired filter configuration wherein the outer surface of the filter is a surface of the substrate free of particulate gas phase odor-removing means and the inner surface of the filter is a surface of the substrate coated with the particulate gas phase odor-removing means adhesively secured thereto.
Claims15
A gas phase permeable filter comprising:
- a plurality of self-supporting perforated sheet substrates arranged in confronting spaced apart face-to-face relation having discrete perforations,
- a means for holding said substrates in the aforesaid assembled relation,
- a uniform layer of particulate odor-adsorbing media disposed in the space between said substrates,
- said layer consisting essentially of discrete odor-removing particles ranging in size from approximately 12/28 to 4/6 measured by the Tyler screen series individually adhesively bonded to one of the confronting substrate faces such that the layer is held between the spaced apart substrates against settling or displacement, and
- each odor-removing particle having only a minor portion of its surface in contact with the adhesive and a major portion upstanding from the substrate face and free of adhesive.
A gas phase permeable filter comprising:
- a plurality of self-supporting perforated sheet substrates assembled in confronting spaced apart face-to-face relation having discrete perforations, each of said confronting faces having disposed upon it a uniform layer of odor-adsorbing media consisting essentially of discrete odor-removing particles individually bonded by adhesive to its adjacent confronting face such that the layer is held between the spaced apart substrates against settling and displacement, each odor-removing particle having only a minor portion of its surface in contact with the adhesive and a major portion upstanding from the substrate face and free of adhesive so to form a thickness of odor-removing media between the substrates of approximately two particulate diameters;
- and
- a means for holding said substrates in the aforesaid assembled relation.
Dependencies are inferred from the claim text.