Cordless sweeper

• US 8,230,540 B1
• Filed: 04/23/2008
• Issued: 07/31/2012
• Est. Priority Date: 04/24/2007
• Status: Expired due to Fees

• Current Assignee: Marc O. Nelson
• Original Assignee: Marc O. Nelson
• Inventors: Nelson, Marc O.
• Primary Examiner(s): Chin, Randall
• Application Number:
  US12/148,941
• Time in Patent Office: 1,560 Days
• Field of Search: 15/411, 15/42, 15/83
• US Class Current: 15/41.1
• CPC Class Codes: A47L 11/22 Floor-sweeping machines, hand-driven
• CPC Class Codes: A47L 11/33 having means for storing dirt

Abstract

A floor and carpet sweeper has a pair of side-by-side brush assemblies rotated in opposite rotational directions with a battery operated electric motor operable to pickup dust, dirt and debris materials from a surface and deposit the materials into a replacement filter box.

Claims

1. A sweeper for picking up dirt and debris from a surface comprising:

a frame,

rear wheels rotatably connected to said frame,

a transverse front roller wheel rotatably connected to said frame,

said rear wheels and roller wheel supporting the frame above said surface,

front and rear transverse brush assemblies rotatably mounted on the frame,

an electric motor,

a battery wired to the electric motor to provide electric power to operate said electric motor,

a power transmitting mechanism coupling the electric motor to the front and rear brush assemblies operable to rotate the front and rear brush assemblies in opposite rotational directions,

a container having a chamber and a front opening open to the chamber supported on the frame rearwardly of the rear brush assembly,

said roller wheel being transversely located between the rear brush assembly and below the front opening of the container whereby when the electric motor is operated to rotate the front and rear brush assemblies dirt and debris on the surface are picked up and transferred to the chamber of the container,

a cover located over the container to retain the container on the frame, and

a connector securing the cover to the frame.

2. The sweeper of claim 1 wherein:

said frame includes upright side walls, and

members rotatably supporting opposite ends of the brush assemblies on said side walls.

3. The sweeper of claim 1 wherein:

said frame includes a top wall, and

said connector comprising a transverse hinge connecting the cover to the top wall whereby the cover can be pivoted upwardly to provide access to the container and allow the container to be inserted into and removed from the sweeper.

4. The sweeper of claim 3 wherein:

said cover has openings to allow air to flow out of the chamber to atmosphere.

5. The sweeper of claim 1 wherein:

each brush assembly has a transverse cylindrical core, and

a pair of helical rows of radial projections attached to the core.

6. The sweeper of claim 1 wherein:

the power transmitting mechanism includes an endless belt and

tooth pulleys joined to ends of the front and rear brush assemblies cooperating with the belt to rotate the front and rear brush assemblies in opposite rotational directions.

7. The sweeper of claim 1 including:

an on-off switch wired to the battery and electric motor to control the operation of the electric motor.

8. The sweeper of claim 1 including:

an upright handle, and

a member securing the handle to the frame whereby the handle is useable to manually move the sweeper relative to the surface to pickup dirt and debris from the surface.

9. The sweeper of claim 1 wherein:

the container comprises a box having upright side walls, a bottom wall, a rear wall and top wall jointed together to provide said chamber for holding dirt and debris,

said box having said front opening between the top and bottom walls to allow dirt and debris to flow with air into the chamber,

said bottom wall having a transverse front edge,

a transverse lip joined to the front edge of the bottom wall below the front opening, said lip extended upwardly and forwardly from said front edge over the front roller wheel, said roller wheel being located below the lip,

said top wall having at least one opening to allow air to flow from the chamber to atmosphere.

10. The sweeper of claim 9 wherein:

said top wall has a plurality of openings, and

an air filtering member secured to the top wall extended over said openings to filter dirt and debris from air flowing through the air filtering member and openings to atmosphere.

11. The sweeper of claim 9 wherein:

said lip is a flat member extended upwardly and forwardly in front of the front opening to the chamber.

12. The sweeper of claim 9 wherein:

said top wall has a front section extended forwardly of the bottom wall.

13. The sweeper of claim 1 wherein:

the roller wheel comprises an elongated cylindrical roller having opposite ends rotatably mounted on the frame and transversely located between the rear brush assembly and the front opening of the container.

14. The sweeper of claim 13 wherein:

the container has a bottom wall, and

a transverse lip joined to the bottom wall below the front opening, said lip being located adjacent the cylindrical roller whereby on rotation of the rear brush assembly dirt and debris from the surface are directed over the roller and lip into the chamber of the container.

15. A sweeper for picking up dirt and debris from a surface comprising:

a frame,

at least one rear wheel rotatably connected to the frame adapted to engage the surface,

a front brush assembly rotatably mounted on the frame adapted to engage the surface,

a rear brush assembly rotatably mounted on the frame, said rear brush assembly being laterally spaced from and generally parallel to the front brush assembly,

a power mechanism drivably connected to the front and rear brush assemblies operable to rotate the front and rear brush assemblies in opposite rotational direction,

a container having a chamber and a front opening open to the chamber to accommodate dirt and debris directed into the chamber by the rotation of the front and rear brush assemblies,

a roller wheel rotatably mounted on said frame and located between the rear brush assembly and below the front opening to the chamber adapted to engage the surface, and

said rear wheel and roller wheel being adapted to support the sweeper on the surface.

16. The sweeper of claim 15 wherein:

the front and rear brush assemblies each includes rows of generally radial projections adapted to engage the surface during rotation of the front and rear brush assemblies to pick up dirt and debris from the surface and direct the dirt and debris into the chamber of the container.

17. The sweeper of claim 15 wherein:

the power mechanism includes

an endless belt,

pulleys connected to the front and rear brush assemblies,

said endless belt being located on said pulleys to rotate the front and rear brush assemblies in opposite rotational directions,

an electric motor operably connected to said belt to move the belt thereby rotating the front and rear brush assemblies, and

a battery mounted on the frame providing electric power to said electric motor.

18. The sweeper of claim 15 wherein:

the container has a bottom wall, and a transverse lip joined to the bottom wall below the front opening, said lip being located adjacent said roller wheel whereby on rotation of the rear brush assembly dirt and debris from the surface are directed over the roller wheel and lip into the chamber of the container.

19. The sweeper of claim 15 wherein:

the roller wheel comprises an elongated cylindrical roller having opposite ends rotatably mounted on the frame and transversely located between the rear brush assembly and the front opening of the container.

20. The sweeper of claim 19 wherein:

the container has a bottom wall, and

a transverse lip joined to the bottom wall below the front opening, said lip being located adjacent the cylindrical roller whereby on rotation of the rear brush assembly dirt and debris from the surface are directed over the roller and lip into the chamber of the container.