Telescoping wand for vacuum cleaners

• US 5,462,311 A
• Filed: 11/13/1992
• Issued: 10/31/1995
• Est. Priority Date: 11/13/1992
• Status: Expired due to Term

• Current Assignee: Royal Appliance Manufacturing Company (Techtronic Industries Company Limited)
• Original Assignee: Royal Appliance Manufacturing Company (Techtronic Industries Company Limited)
• Inventors: Cipolla, Mark E.
• Primary Examiner(s): Reese, Randolph A.
• Assistant Examiner(s): SHACKELFORD, HEATHER CHUN
• Application Number:
  US07/976,439
• Time in Patent Office: 1,082 Days
• Field of Search: 285/7, 285/298, 285/302, 285/307, 285/319, 285/24, 285/27, 285/361, 285/396, 285/303
• US Class Current: 285/7
• CPC Class Codes: A47L 9/244 for telescopic or extensible hoses or pipes

Abstract

A telescoping assembly especially suited for vacuum cleaner wands includes a first tube having an outer diameter and a second tube having an inner diameter which is larger than the outer diameter of the first tube. In this way, the first tube fits within the second tube in an axially sliding manner. A collet is positioned within the second tube and encircles the first tube. The collet includes a locking element for selectively securing the first tube in relation to the second tube, the locking element cooperating with a portion of the second tube upon a rotation of the collet to prevent a telescoping movement of the first tube in relation to the second tube.

Claims

1. A telescoping assembly comprising:

a first tube having an outer diameter;

a second tube having an inner diameter which is larger than said outer diameter of said first tube wherein said first tube is positioned within said second tube;

a one piece collet positioned within said second tube and encircling said first tube, said collet comprising a locking means for selectively securing said first tube in relation to said second tube in a plurality of longitudinal positions, said locking means cooperating with a portion of said second tube upon a rotation of said collet to prevent a telescoping movement of said first tube in relation to said second tube; and

a means for preventing said first tube from sliding out of said second tube in any rotational orientation of said first tube.

2. The assembly of claim 1 further comprising a means for preventing said first tube from rotating in relation to said collet.

3. The assembly of claim 2 wherein said means for preventing rotation comprises a rib located on said collet and a longitudinally extending groove located in said first tube, wherein said rib fits into said groove, said rib and groove cooperating to prevent a rotation of said first tube in relation to said collet.

4. The assembly of claim 1 further comprising a means for securing said collet to said second tube.

5. The assembly of claim 4 wherein said means for securing comprises a flange extending radially outwardly from a side wall of said collet and a slot extending through a side wall of said second tube, said flange extending through said slot to secure said collet to said second tube.

6. The assembly of claim 1 further comprising a means for preventing said collet from sliding completely within said second tube.

7. The assembly of claim 6 wherein said means for preventing said collet from sliding completely within said second tube comprises a collar extending circumferentially around one end of said collet said collar cooperating with an end of said second tube to prevent said collet from sliding completely into said second tube.

8. The assembly of claim 1 wherein said collet is secured to said second tube and wherein said means for preventing comprises a flange extending from one end of said collet and a circumferentially extending rib located on one end of said first tube, said flange and rib cooperating to prevent said first tube from sliding out of said second tube.

9. The assembly of claim 1 further comprising a means for preventing said first tube from sliding completely into said second tube.

10. The assembly of claim 9 wherein said means for preventing said first tube from sliding completely into said second tube comprises a reduced diameter section of said second tube, said reduced diameter section being located adjacent one end of said second tube.

11. A telescoping assembly comprising:

a first tube having an outer diameter;

a second tube having an inner diameter which is larger than said outer diameter of said first tube so that said first tube fits within said second tube in a sliding manner;

a collet positioned within said second tube and encircling said first tube, said collet comprising a locking means for selectively securing said first tube in relation to said second tube in a plurality of longitudinal positions, said locking means cooperating with a portion of said second tube upon an associated rotation of said collet and said first tube to prevent a telescoping movement of said first tube in relation to said second tube;

a means for securing said collet to said second tube; and

,

a means for allowing said first tube to slide axially in relation to said collet when said first tube telescopes into and out of said second tube.

12. The assembly of claim 11 further comprising a means for preventing a rotation of said first tube in relation to said second tube wherein said means for preventing rotation comprises a rib located on said collet and a longitudinally extending groove located in said first tube, wherein said rib fits into said groove, said rib and groove cooperating to prevent a rotation of said first tube in relation to said collet.

20. The assembly of claim 11 further comprising a means for preventing said collet from sliding completely within said second tube, wherein said means for preventing comprises a collar extending circumferentially around one end of said collet said collar cooperating with an end of said second tube to prevent said collet from sliding completely into said second tube.

21. The assembly of claim 11 further comprising a means for preventing said first tube from sliding out of said collet, wherein said means for preventing comprises a flange extending from one end of said collet and a circumferentially extending rib located on one end of said first tube, said flange and rib cooperating to prevent said first tube from sliding out of said collet.

13. A telescoping wand assembly for a vacuum cleaner, said assembly comprising:

a first tube having an outer diameter;

a second tube having an inner diameter which is larger than said outer diameter of said first tube so that said first tube fits within said second tube in a sliding manner, said second tube including an inner periphery on which is defined a shelf; and

,

a collet positioned within said second tube and encircling said first tube, said collet comprising a flexible section which, upon rotation of said collet, will engage said shelf defined on said second tube and said outer periphery of said second first tube to selectively secure said first tube in relation to said second tube to prevent a telescoping movement of said first tube in relation to said second tube at a plurality of relative longitudinal positions between said first and second tubes to which said first tube can be slid within said second tube.

14. The assembly of claim 13 wherein said collet further comprises a collar extending circumferentially around one end thereto, said collar cooperating with an end of said second tube to prevent said collet from sliding completely into said second tube.

15. The assembly of claim 13 wherein said collet further comprises a flange extending from one end thereof, said flange cooperating with a collar located on one end of said first tube, said flange and collar cooperating to prevent said first tube from sliding out of said collet.

16. The assembly of claim 13 wherein said second tube further comprises a reduced diameter section which is located adjacent one end of said second tube, said reduced diameter section of said second tube engaging an end of said first tube for preventing said first tube from sliding completely into said second tube.

17. The assembly of claim 13 wherein said collet further comprises a rib defined on an inner periphery of the collet, said rib cooperating with a groove extending longitudinally along an outer periphery of said first tube to prevent a rotation of said first tube in relation to said collet.

18. A telescoping assembly comprising:

a first tube having an outer diameter, a first end and a second end;

a second tube having an inner diameter, a first end and a second end, wherein said second tube inner diameter is larger than said first tube outer diameter so that said first end of said first tube is slidably positioned within said second end of said second tube;

a collet positioned within said second tube and encircling said first tube, said collet comprising a locking means for selectively securing said first tube in relation to said second tube in a plurality of longitudinally positions, said locking means cooperating with a portion of said second tube upon a rotation of said collet to prevent a telescoping movement of said first tube in relation to said second tube; and

,

a means for preventing said first tube from sliding out of said second tube in any rotational orientation of said first and second tubes.

19. The assembly of claim 18 further comprising a means for securing said collet to said second tube wherein said means for securing comprises a flange extending radially outwardly from a side wall of said collet and a slot extending through a side wall of said second tube, said flange extending through said slot to secure said collet to said second tube.