Bagless stick type vacuum cleaner

• US 7,507,269 B2
• Filed: 02/17/2006
• Issued: 03/24/2009
• Est. Priority Date: 01/10/2003
• Status: Expired due to Fees

• Current Assignee: Royal Appliance Manufacturing Company (Techtronic Industries Company Limited)
• Original Assignee: Royal Appliance Manufacturing Company (Techtronic Industries Company Limited)
• Inventors: Matousek, Robert A., Hin, Yung Leong, Khalil, David, Wright, Michael F., Murphy, John S.
• Primary Examiner(s): Smith; Duane S
• Assistant Examiner(s): PHAM, MINH CHAU THI
• Application Number:
  US11/356,571
• Publication Number:
  US 20060162118A1
• Time in Patent Office: 1,131 Days
• Field of Search: 553/37, 554/29, 554/591, 554/82, 55D/IG.3, 553/57, 153/271, 153/272, 153/276, 153/277, 153/47, 15350-353, 210/470, 210/471
• US Class Current: 55/337
• CPC Class Codes: A47L 5/28 Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle A47L5/24 takes precedence
• CPC Class Codes: A47L 9/127 tube- or sleeve-shaped
• CPC Class Codes: A47L 9/165 Construction of inlets
• CPC Class Codes: A47L 9/1666 with filtering means
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Abstract

An upright vacuum cleaner includes a nozzle base having a main suction opening formed in an underside thereof. A housing is hingedly connected to the nozzle base. The housing includes a dirt separation chamber and a dirt receptacle for receiving dirt and dust separated by the dirt separation chamber. A conduit connects the nozzle base to the housing. A suction source is located in one of the housing and the nozzle base. The suction source is in fluid communication with the dirt separation chamber. A generally conically shaped filter extends into the dirt separation chamber along a longitudinal axis of the dirt separation chamber.

Claims

1. A vacuum cleaner filter, comprising:

a first end wall which blocks airflow axially through the filter;

a side wall which comprises a filter medium;

a second end wall, comprising;

an aperture which allows airflow therethrough, and

a handle extending across said aperture from a first side wall thereof to an opposed second side wall thereof.

2. The filter of claim 1 wherein said handle is located in a plane of said second end wall.

3. The filter of claim 1 wherein said handle divides said aperture into two airflow openings.

4. The filter of claim 1 wherein said filter medium comprises a pleated planar material.

5. The filter of claim 1 wherein said filter side wall is generally conically shaped.

6. The filter of claim 1 wherein said side wall is permanently mounted to said first and second end walls to form an integral structure.

7. A filter which is selectively mounted to a dirt cup of a vacuum cleaner, the filter comprising:

a planar first end wall which blocks airflow therethrough;

a side wall which comprises a filter medium;

a second end wall comprising;

a top wall,

an aperture defined in said top wall, which allows airflow therethrough,

a skirt encircling said aperture, wherein an upper end of said side wall of said filter is secured to said skirt, wherein said second end wall is larger in diameter than said first end wall and is adapted to engage an internal peripheral side wall of an associated dirt cup, which side wall extends from a bottom wall of said dirt cup, via an interference fit between said second end wall and an upper edge of said internal peripheral side wall of said dirt cup.

8. The filter of claim 7 wherein said filter medium comprises a pleated planar material.

9. The filter of claim 7 wherein said side wall is generally conically shaped.

10. The filter of claim 7 wherein said second end wall further comprises a rim, said rim cooperating with the internal peripheral side wall of the associated dirt cup to selectively mount said filter to the associated dirt cup.

11. The filter of claim 7 wherein said second end wall further comprises a handle.

12. The filter of claim 11 wherein said handle extends across said aperture.

13. The filter of claim 12 wherein said filter is so oriented, when in use, in relation to an associated dirt cup that said second end wall is located above said first end wall.

14. A filter which is selectively mounted to a dust cup of a vacuum cleaner comprising:

an end cap including a first channel;

a side wall which comprises a filter medium, wherein a first end of said side wall is secured in said first channel;

a frame including a second channel, wherein a second end of said side wall is secured in said second channel;

an aperture defined in said frame for allowing airflow therethrough; and

,

a rim, said rim including an outer peripheral edge for cooperating with an upper portion of an inner surface of a side wall of an associated dirt cup to selectively mount said filter to the associated dirt cup.

15. The filter of claim 14 wherein said end cap blocks airflow therethrough.

16. The filter of claim 15 wherein said end cap has a diameter which is larger than a diameter of said first end of said side wall.

17. The filter of claim 14 wherein said filter medium comprises a pleated planar material.

18. The filter of claim 14 wherein said side wall is generally conically shaped.

19. The filter of claim 14 wherein said second channel is defined between an inner skirt and an outer skirt extending from a top wall of said frame.

20. The filter of claim 14 wherein said side wall has a length which is greater than a diameter of said end cap.

21. The filter of claim 14 wherein said frame further comprises a handle.

22. The filter of claim 21 wherein said handle extends across said aperture.