Back to results
US 10,376,826 B2Granted
Filter assemblies and methods for producing filter assemblies
OwnerJohn Zurlieneinventor
Life of this patent
Estimating the term…
Abstract
A filter assembly having at least two filter caps produced from a planar composite sheet of heat liquefied adhesive and metal layer (typically sheet metal). The filter caps are adhered to a porous, typically pleated, filter media positioned, which is generally an air filter, within channels of each filter cap wherein the adhesive, typically a plastisol, adheres the filter caps to the filter media and can impregnate the filter media.
Claims20
A filter assembly comprising:
- a first filter cap and a second filter cap each having a base section with a filter facing surface, an outer facing surface, and at least one perimeter wall having a surface and located at an inner perimeter of the filter cap and/or an outer perimeter of the filter cap, wherein the at least one perimeter wall extends upwardly from the base section and wherein the perimeter wall or walls defines the base section of the filter cap and wherein the filter facing surface of the base section and the filter facing surface of the at least one perimeter wall each have a height with a heat liquefiable adhesive on the surface of the at least one perimeter wall for the height of the at least one perimeter wall;
- and
- a filter media adhered to the base section of the first filter cap and the second filter cap by the heat liquefiable adhesive at a first filter cap engaging end portion of the filter media and a second filter cap engaging end portion of the filter media;
- wherein the first filter cap engaging end portion and the second filter cap engaging end portion are at opposite ends of the filter media and adhered such that some of the heat liquefiable adhesive is impregnated in at least the first filter cap engaging end portion and the second filter cap engaging end portion of the filter media and the heat liquefiable adhesive is impregnated into the filter media along the surface of the at least one perimeter wall for the height of the at least one perimeter wall;
- and
- wherein the first filter cap and the second filter cap each have at least two layers of material, a metal layer on the exterior facing side of the heat liquefiable adhesive and a heat liquefiable adhesive layer on the filter facing surface;
- wherein the heat liquefiable adhesive is liquid at temperatures above about 400° F. and solid at temperatures below about 350° F.;
- and wherein the heat liquefiable adhesive adheres to the surface of the metal layer and is in solid form at room temperature prior to and after adherence of the first filter cap and the second filter cap with the filter media.
5 more elements
A filter assembly comprising:
- a filter cap having a base section with a filter facing surface and an outer facing surface and at least one perimeter wall at an inner perimeter of the filter cap, an outer perimeter of the filter cap or both the inner perimeter of the filter cap and the outer perimeter of the filter cap, wherein the at least one perimeter wall extends away from the base section and wherein the filter facing surface of the base section and the filter facing surface of the perimeter wall each have a heat liquefiable adhesive on the filter facing surface thereof wherein the heat liquefiable adhesive on the filter facing surface of the perimeter wall extends above a top surface of the heat liquefiable adhesive on the filter facing surface of the base section;
- a first end of a filter media and the filter cap adhered to one another by the heat liquefiable adhesive at a filter cap engaging end portion in both a horizontal and vertical direction;
- and
- wherein the filter cap has at least two layers, a metal layer and a heat liquefiable adhesive layer;
- wherein the heat liquefiable adhesive is liquid at temperatures above about 400° F. and solid at temperatures below about 350° F.;
- and wherein the heat liquefiable adhesive adheres to the filter facing surface of the metal layer in solid form at room temperature.
3 more elements
An air filter assembly comprising:
- a first filter cap and a second filter cap each having a base section with a filter facing surface and an outer facing surface and at least one perimeter wall located at an outer perimeter of the first filter cap, the second filter cap or both the first and second filter cap, the first and the second filter cap having a filter facing surface and an exterior facing surface wherein the at least one perimeter wall extends away from the base section and the filter facing surfaces of the first filter cap and the second filter cap face one another, and wherein the perimeter wall defines the base section of the filter cap and wherein the filter facing surface of the base section and the filter facing surface of the perimeter wall each have a plastisol adhesive on the filter facing surface thereof and the plastisol adhesive on the filter facing surface of the filter facing surface of the perimeter wall extends above the plastisol adhesive on the filter facing surface of the base section;
- and
- a filter media adhered to the first filter cap and the second filter cap by the plastisol adhesive at a first filter cap engaging end portion and a second filter cap engaging end portion wherein the first filter cap engaging end portion and the second filter cap engaging end portion are opposite ends of the filter media and adhered such that the plastisol adhesive of the first filter cap adheres at least a first filter cap engaging end portion and a metal exterior facing layer of the first filter cap to one another and a second filter cap engaging end portion of the filter media and a metal exterior facing layer of the second filter cap to one another;
- and
- wherein the first filter cap and the second filter cap have at least two layers of material, a metal layer on the exterior facing side of a plastisol adhesive layer;
- and wherein the plastisol adhesive is liquid at temperatures above about 400° F. and solid at temperatures below about 350° F.
3 more elements
Dependencies are inferred from the claim text.