Filter for a portable industrial air filtration device

• US 10,226,729 B2
• Filed: 12/09/2016
• Issued: 03/12/2019
• Est. Priority Date: 09/12/2014
• Status: Active Grant

• Current Assignee: Illinois Tool Works Inc.
• Original Assignee: Illinois Tool Works Inc.
• Inventors: Francis, Ryan L., Moore, Stephen Patrick
• Primary Examiner(s): Clemente, Robert
• Application Number:
  US15/374,406
• Publication Number:
  US 20170087495A1
• Time in Patent Office: 823 Days
• CPC Class Codes: B01D 2273/30 Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan
• CPC Class Codes: B01D 46/0001 Making filtering elements
• CPC Class Codes: B01D 46/0086 Filter condition indicators
• CPC Class Codes: B01D 46/009 Identification of filter type or position thereof, e.g. by transponders or bar codes
• CPC Class Codes: B01D 46/2411 Filter cartridges
• CPC Class Codes: B01D 46/44 controlling filtration
• CPC Class Codes: B01D 46/444 by flow measuring
• CPC Class Codes: B01D 46/446 by pressure measuring
• CPC Class Codes: B01D 46/46 automatic
• CPC Class Codes: B01D 46/56 with multiple filtering elements, characterised by their mutual disposition B01D46/12 takes precedence
• CPC Class Codes: B01D 46/64 arranged concentrically or coaxially

Abstract

Various embodiments of the present disclosure provide a filter for a portable industrial air filtration device. The filter generally includes a body and a limit switch actuator attached to the body. The body includes filter media and a rigidized material. The filter media is attached to the rigidized material, and the body has opposing upper and lower edges. The limit switch actuator includes a head and an actuator connected to and extending from the head. The limit switch actuator is attached to the body such the actuator extends below the lower edge of the body and is configured to actuate a limit switch actuator of an air filtration device when the filter is installed in the air filtration device.

Claims

1. A filter comprising:

a deformable body including filter media and a rigidize material, the body including an upper edge, a lower edge, an interior surface, and an exterior surface,

wherein the rigidized material forms at least part of the interior surface of the body and wherein an upper portion of the rigidized material is disposed between a first portion of the filter media and a second portion of the filter media; and

a limit switch actuator attached to the interior surface of the body and extending below the lower edge of the body.

2. The filter of claim 1, wherein the body is annularly shaped.

3. The filter of claim 1, wherein the filter media forms at least part of the exterior surface of the body.

4. The filter of claim 1, wherein the filter media is attached to the rigidized material via stitching.

5. The filter of claim 1, wherein a lower portion of the rigidized material is disposed between a third portion of the filter media and a fourth portion of the filter media.

6. The filter of claim 1, wherein the limit switch actuator includes a head and an arm connected to and extending from the head, wherein the limit switch actuator is attached to the inner surface of the body such that the head contacts an interior surface of the body and the arm extends below the lower edge of the body.

7. A filter comprising:

a deformable body including filter media, the body including an upper edge, a lower edge, an interior surface, and an exterior surface; and

a limit switch actuator attached to the interior surface of the body and extending below the lower edge of the body,

wherein the limit switch actuator includes a head and an arm connected to and extending from the head, wherein the limit switch actuator is attached to the inner surface of the body such that the head contacts an interior surface of the body and the arm extends below the lower edge of the body, and

wherein the limit switch actuator is attached to the body via at least one rivet.

8. A filter comprising:

filter media including an upper edge, a lower edge, and two side edges, the two side edges attached to one another so the filter media has a generally annular shape; and

a limit switch actuator extending through the filter media so part of the limit switch actuator extends below the lower edge of the filter media.

9. The filter of claim 8, which includes rigidized material attached to the filter media, the filter media and the rigidized material forming a body.

10. The filter of claim 9, wherein the filter media forms at least part of an exterior surface of the body.

11. The filter of claim 10, wherein the rigidized material forms at least part of an interior surface of the body.

12. The filter of claim 8, wherein the limit switch actuator includes a head and an arm connected to and extending from the head.

13. The filter of claim 12, wherein a first portion of the filter media and a second portion of the filter media are attached to one another, and wherein the head of the limit switch actuator is located between the first and second portions of the filter media.

14. A method of manufacturing a filter, the method comprising:

attaching a limit switch actuator to a surface of filter media so part of the limit switch actuator extends below a lower edge of the filter media;

attaching a rigidized material to the filter media, wherein attaching the rigidized material to the filter media includes folding an upper edge of the filter media over part of the rigidized material attaching the upper edge of the filter media to the rigidized material and to another portion of the filter media; and

attaching a first side edge of the filter media to a second side edge of the filter media so the filter media forms a generally annular shape having an interior surface to which the limit switch actuator is attached.

15. The method of claim 14, which includes attaching the first side edge of the filter media to the second side edge of the filter media before attaching the limit switch actuator to the surface of the filter media.