Mechanical sweeper configuration

• US 7,373,685 B2
• Filed: 08/20/2003
• Issued: 05/20/2008
• Est. Priority Date: 08/20/2003
• Status: Active Grant

• Current Assignee: Healthy Gain Investments Limited
• Original Assignee: Healthy Gain Investments Limited
• Inventors: Nam, Peter Ho Ka
• Primary Examiner(s): KARLS, SHAY LYNN
• Application Number:
  US10/644,181
• Publication Number:
  US 20050039277A1
• Time in Patent Office: 1,735 Days
• Field of Search: 15/791, 15/411, 15/491, 15/792, 15/87, 15 82- 83, 15/521, 15/78
• US Class Current: 15/41.1
• CPC Class Codes: A47L 11/32 Carpet-sweepers combined with suction cleaners A47L7/02
• CPC Class Codes: A47L 11/33 having means for storing dirt
• CPC Class Codes: A47L 11/4013 Contaminants collecting devices, i.e. hoppers, tanks or the like
• CPC Class Codes: A47L 11/4025 Means for emptying
• CPC Class Codes: A47L 11/4038 Disk shaped surface treating tools
• CPC Class Codes: A47L 11/4058 for adjusting the height of the tool
• CPC Class Codes: A47L 11/4072 Arrangement of castors or wheels
• CPC Class Codes: A47L 5/34 with height adjustment of nozzles or dust-loosening tools

Abstract

A mechanical sweeper is disclosed. The mechanical sweeper includes a front housing and a rotating brush secured to the front housing having tangentially extending bristles adapted to engage a surface at an oblique angle. The mechanical sweeper further includes a frame secured to a lower portion of the front housing and a height adjustment column rising from the rear of the frame. The mechanical sweeper still further includes dirt receptacle removably positional on an upper surface of the frame. The front housing and column serve to orient the dirt receptacle in a position relative to the frame.

Claims

1. A mechanical sweeper comprising:

a front housing;

a rotating brush secured to the front housing having tangentially extending bristles adapted to engage a surface at an oblique angle;

a frame having a first surface opposite a second surface, the first surface of the frame secured to a lower portion of the front housing;

a wheel well rising from and directly attached to the first surface of the frame;

a height adjustment column housing disposed over, and enclosing the wheel well, the column housing rising from and directly attached to the first surface of the frame;

a dirt receptacle removably attached on the first surface of the frame, wherein the front housing and column serve to orient the dirt receptacle in a position relative to the frame; and

an adjustable wheel assembly positioned within the column housing.

2. The mechanical sweeper of claim 1, further comprising a notch defined in the rear of the dirt receptacle adapted to partially extend around the column.

3. The mechanical sweeper of claim 1, the adjustable wheel assembly further comprising a rotary knob on top of the column housing.

4. The mechanical sweeper of claim 3, further comprising a cam which moves the adjustment wheel up and down relative to the frame as the knob is rotated.

5. The mechanical sweeper of claim 1, wherein moving the adjustment wheel downwardly relative to the frame increases the force of the brush on the surface.

6. The mechanical sweeper of claim 1, wherein moving the adjustment wheel upwardly relative to the frame decreases the force of the brush on the surface.

7. The mechanical sweeper of claim 1, further comprising a latch positioned on the upper portion of the dirt receptacle.

8. The mechanical sweeper of claim 7, wherein the latch, column and frame cooperate to position the dirt receptacle relative to the front housing.

9. The mechanical sweeper of claim 7, wherein the latch moves in a linear path to engage a catch defined in the upper portion of the front housing.

10. A mechanical sweeper comprising:

a front housing;

a first and a second rotating brush secured to the front housing each having tangentially extending bristles adapted to engage a surface at an oblique angle;

a dirt scoop positioned in the upper housing proximate to the point at which the bristles of the first brush contact the bristles of the second brush;

a frame having a first surface and a second surface, the first surface of the frame secured to a lower portion of the front housing;

a wheel well located toward the rear of the frame, and said wheel well rising from the first surface of the frame;

a column housing disposed over, and enclosing the wheel well, the column rising from and directly attached to the first surface of the frame;

an adjustable wheel assembly positioned within the column housing; and

a dirt receptacle removably attached on the first surface of the frame and adapted to receive dirt from the dirt scoop when placed in an operational position, wherein;

the front housing and column serve to orient the dirt receptacle in the operational position.

11. The mechanical sweeper of claim 10, further comprising a notch defined in the rear of the dirt receptacle adapted to partially extend around the column housing.

12. The mechanical sweeper of claim 10, the adjustable wheel assembly further comprising a rotary knob on top of the column.

13. The mechanical sweeper of claim 12, further comprising a cam assembly which moves the adjustment wheel up and down relative to the frame as the knob is rotated.

14. The mechanical sweeper of claim 10, wherein:

moving the adjustment wheel downwardly relative to the frame increases the force of the first brush on the surface, and

moving the adjustment wheel downwardly relative to the frame increases the force of the second brush on the surface.

15. The mechanical sweeper of claim 10, wherein:

moving the adjustment wheel upwardly relative to the frame decreases the force of the first brush on the surface, and

moving the adjustment wheel upwardly relative to the frame decreases the force of the second brush on the surface.

16. The mechanical sweeper of claim 10, further comprising a latch positioned on the upper portion of the dirt receptacle.

17. The mechanical sweeper of claim 16, wherein the latch, column and frame cooperate to position the dirt receptacle relative to the scoop.

18. The mechanical sweeper of claim 16, wherein the latch moves in a linear path to engage a catch defined in the upper portion above the scoop.

19. A mechanical sweeper comprising:

a front housing;

a rotating brush secured to the front housing;

a frame having a first surface opposite a second surface, the first surface of the frame secured to a lower portion of the front housing and extending rearwardly therefrom;

a wheel well defined by said frame;

a height adjustment column housing disposed over, and enclosing said wheel well, said column housing rising from and directly attached to the first surface of said frame;

a dirt receptacle releasably attached to said frame; and

an adjustable wheel assembly at least partially receivable within said column housing and movable vertically to adjust the height of said frame, wherein said adjustable wheel assembly at least partially supports said frame when said dirt receptacle is removed, said wheel well at least partially receiving a wheel maintained by said adjustable wheel assembly.

20. The mechanical sweeper of claim 19, wherein said dirt receptacle defines a notch for at least partially receiving said column, wherein said column is engageable with said notch to orient said dirt receptacle relative to said frame.