Larry M Larkin

US Patent:

7282140, Oct 16, 2007

Filed:

Sep 2, 2004

Appl. No.:

10/932887

Inventors:

Larry Larkin - Lake Geneva WI, US

Assignee:

Filtertek Inc. - Hebron IL

International Classification:

B01D 35/14

US Classification:

210130, 21016708, 2104165

Abstract:

A sump filter assembly wherein a filter element that may or may not be removably disposed in a filter housing is sealingly engaged with the filter housing by way of a sealing member to separate the filter housing cavity between dirty and clean spaces. The filter element is provided with filtration material with a portion thereof embedded in the filter element, the filter element is further provided with a sealing member retaining shoulder to ensure proper placement of the sealing member in the assembly, with the sealing member being an O-ring or gasket member, among other things, and a bypass valve for cold flow of transmission fluid is optionally provided.

US Patent:

20020121473, Sep 5, 2002

Filed:

Mar 1, 2002

Appl. No.:

10/087119

Inventors:

Andrew Boast - Fontana WI, US
Larry Larkin - Lake Geneva WI, US

International Classification:

B01D035/02

US Classification:

210/450000, 210/454000, 210/455000

Abstract:

A sump filter assembly wherein a filter element that may or may not be removably disposed in a filter housing is sealingly engaged with the filter housing by way of a sealing member to separate the filter housing cavity between dirty and clean spaces. The filter element is provided with filtration material with a portion thereof embedded in the filter element, the filter element is further provided with a sealing member retaining shoulder to ensure proper placement of the sealing member in the assembly, with the sealing member being an O-ring or gasket member, among other things.

US Patent:

20050045566, Mar 3, 2005

Filed:

Aug 29, 2003

Appl. No.:

10/652896

Inventors:

Larry Larkin - Lake Geneva WI, US
Andrew Boast - Fontana WI, US

International Classification:

B01D029/00

US Classification:

210767000, 210489000

Abstract:

A filtration media is made with a layer of felt and a layer of woven screen, the layer of felt and the layer of woven screen assembled on top of one another, and held together with a sonic weld. A method of manufacturing a filter includes the steps of placing at least two layers of filtration material on top of one another, and applying a sonic weld to hold together the layers. A method of filtration includes the steps of providing a housing containing a filtration material having a layer of felt and a layer of woven screen, wherein the layer of felt and the layer of woven screen are held together with a sonic weld; and passing a fluid through the filter housing such that the fluid passes through the filtration material.