Filter with self-positioning cartridge arrangement

• US 7,651,609 B2
• Filed: 08/15/2007
• Issued: 01/26/2010
• Est. Priority Date: 08/15/2007
• Status: Active Grant

• Current Assignee: United Pet Group Incorporated (Spectrum Brands Holdings, Inc.)
• Original Assignee: Tetra Holding US Incorporated (Spectrum Brands Holdings, Inc.)
• Inventors: Huehn, Donald Barry
• Primary Examiner(s): PRINCE JR, FREDDIE GARY
• Application Number:
  US11/893,359
• Publication Number:
  US 20090045111A1
• Time in Patent Office: 895 Days
• Field of Search: 210/167.21, 210/167.22, 210/167.27, 210/232, 210/282, 119/259, 119/260
• US Class Current: 210/167.21
• CPC Class Codes: A01K 63/045 Filters for aquaria
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

An aquarium filter arrangement including a filter housing and a filter cartridge having self-spacing structure. The self-spacing structure being designed to automatically space the filter cartridge in an operable filtering position. The operable filtering position being a position at which the filter cartridge is seated against a single rib formed in the housing.

Claims

1. An aquarium filter arrangement, comprising:

a) a filter housing having a front wall, a rear wall, and opposite side walls, the front, rear and side walls defining a filtering chamber, the filter housing further including a single rib located in the filtering chamber, the single rib including first and second vertical rib portions each formed on an interior surface of one of the side walls and an interconnecting rib portion formed along a bottom interior surface of the filter housing; and

b) a filter cartridge positionable within the filtering chamber of the filter housing, the filter cartridge including a tab projecting outward from a rear side of the filter cartridge;

c) wherein the tab of the filter cartridge contacts the rear wall of the filter housing to space the filter cartridge a distance from the rear wall, and wherein the filter cartridge seats against the single rib of the filter housing, when the filter cartridge is deposited in the filter housing.

2. The arrangement of claim 1, wherein the filter cartridge divides the filtering chamber into an unfiltered water chamber side and a filtered water chamber side when deposited in the filter housing, the distance between the filter cartridge and the rear wall of the filter housing defining a depth of the unfiltered water chamber side.

3. The arrangement of claim 1, further including a fin located in a bottom region of the filtering chamber, wherein the fin guides the filter cartridge toward the front wall of the filter housing when the filter cartridge is deposited in the filter housing.

4. The arrangement of claim 1, wherein the filter cartridge has a first end and a second end, the second end having a tapering construction.

5. The arrangement of claim 4, wherein the filter cartridge includes a plurality of tabs that space the cartridge from the rear wall of the filter housing, and wherein the tabs include an upper tab located adjacent to the first end of the filter cartridge and a lower tab located adjacent to the second end.

6. The arrangement of claim 1, wherein filter cartridge includes a support frame and filter media positioned within an interior region of the support frame.

7. The arrangement of claim 6, wherein the support frame includes a first frame section and a second frame section, the first and second frame sections being interconnected to one another at a hinged connection.

8. The arrangement of claim 1, wherein the tab has a generally flat construction defined by opposing primary planar surfaces, the opposing primary planar surfaces being oriented in a generally perpendicular direction relative to a rear side of filter cartridge.

9. An aquarium filter arrangement, comprising:

a) a filter housing having a front wall, a rear wall, and opposite side walls, the front, rear and side walls defining a filtering chamber, the filter housing further including a fin located in a bottom region of the filtering chamber; and

b) a filter cartridge positionable within the filtering chamber of the filter housing, the filter cartridge including a tab projecting outward from a rear side of the filter cartridge;

c) wherein the fin guides the filter cartridge toward the front wall of the filter housing, and wherein the tab of the filter cartridge contacts the rear wall of the filter housing to space the filter cartridge a distance from the rear wall, when the filter cartridge is deposited in the filter housing.

10. The arrangement of claim 9, wherein the filter cartridge has a first end and a second end, the second end having a tapering construction.

11. The arrangement of claim 9, wherein the filter cartridge includes a plurality of tabs that space the cartridge from the rear wall of the filter housing, and wherein the tabs include an upper tab located adjacent to a first end of the filter cartridge and a lower tab located adjacent to a second end.

12. The arrangement of claim 9, wherein filter cartridge includes a support frame and filter media positioned within an interior region of the support frame.

13. The arrangement of claim 12, wherein the support frame includes first and second frame sections interconnected to one another at a hinged connection.

14. An aquarium filter arrangement, comprising:

a) a filter housing having a front wall, a rear wall, and opposite side walls, the front, rear and side walls defining a filtering chamber; and

b) a filter cartridge positionable within the filtering chamber of the filter housing, the filter cartridge including a tab projecting outward from a rear side of the filter cartridge, the filter cartridge having a first end and a second end, the second end having a tapering construction;

c) wherein the tab of the filter cartridge contacts the rear wall of the filter housing to space the filter cartridge a distance from the rear wall when the filter cartridge is deposited in the filter housing.

15. The arrangement of claim 14, wherein the filter cartridge includes a plurality of tabs that space the cartridge from the rear wall of the filter housing, and wherein the tabs include an upper tab located adjacent to the first end of the filter cartridge and a lower tab located adjacent to the second end.

16. The arrangement of claim 14, wherein filter cartridge includes a support frame and filter media positioned within an interior region of the support frame.

17. The arrangement of claim 16, wherein the support frame includes first and second frame sections interconnected to one another at a hinged connection.

18. An aquarium filter arrangement, comprising:

a) a filter housing having a front wall, a rear wall, and opposite side walls, the front, rear and side walls defining a filtering chamber; and

b) a filter cartridge positionable within the filtering chamber of the filter housing, the filter cartridge including;

i) a support frame having a first frame section and a second frame section, the first and second frame sections being interconnected to one another at a hinged connection;

ii) filter media positioned within an interior region of the support frame; and

iii) a tab projecting outward from a rear side of the filter cartridge;

c) wherein the tab of the filter cartridge contacts the rear wall of the filter housing to space the filter cartridge a distance from the rear wall when the filter cartridge is deposited in the filter housing.

19. The arrangement of claim 18, wherein the filter cartridge includes a plurality of tabs that space the cartridge from the rear wall of the filter housing, and wherein the tabs include an upper tab located adjacent to a first end of the filter cartridge and a lower tab located adjacent to a second end.

20. An aquarium filter arrangement, comprising:

a) a filter housing having a front wall, a rear wall, and opposite side walls, the front, rear and side walls defining a filtering chamber; and

b) a filter cartridge positionable within the filtering chamber of the filter housing, the filter cartridge including a tab projecting outward from a rear side of the filter cartridge, the tab having a generally flat construction defined by opposing primary planar surfaces, the opposing primary planar surfaces being oriented in a generally perpendicular direction relative to a rear side of filter cartridge;

c) wherein the tab of the filter cartridge contacts the rear wall of the filter housing to space the filter cartridge a distance from the rear wall when the filter cartridge is deposited in the filter housing.

21. The arrangement of claim 20, wherein the filter cartridge has a first end and a second end, the second end having a tapering construction.

22. The arrangement of claim 20, wherein the filter cartridge includes a plurality of tabs that space the cartridge from the rear wall of the filter housing, and wherein the tabs include an upper tab located adjacent to a first end of the filter cartridge and a lower tab located adjacent to a second end.

23. The arrangement of claim 20, wherein filter cartridge includes a support frame and filter media positioned within an interior region of the support frame.

24. The arrangement of claim 23, wherein the support frame includes first and second frame sections interconnected to one another at a hinged connection.

25. The arrangement of claim 20, further including a fin located in a bottom region of the filtering chamber, wherein the fin guides the filter cartridge toward the front wall of the filter housing when the filter cartridge is deposited in the filter housing.