Rotatable brush for surface cleaning apparatus

Patent metadata

Field	Value
Publication number	US-10888205-B2
Application number	US-201815939569-A
Country	US
Kind code	B2
Filing date	Mar 29, 2018
Priority date	Mar 29, 2018
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A surface cleaning apparatus includes a rotatably mounted brush associated with a dirty air inlet. A plurality of bristles extend outwardly from a radial outer surface of the rotatably mounted brush. A leading hair blocking member is provided adjacent a forward rotational side of the bristles, and a trailing hair blocking member is provided adjacent a rearward rotational side of the bristles.

First claim

The invention claimed is:

1. A surface cleaning apparatus for cleaning a floor comprising:
a) an air flow path extending from a dirty air inlet to a clean air outlet with an air treatment member and a suction motor provided in the air flow path;
b) a rotatably mounted brush associated with the dirty air inlet, the rotatably mounted brush having an axis of rotation, a length in the axial direction, a radial outer surface, and first and second axially spaced apart sides;
c) a plurality of bristles extending outwardly from the radial outer surface, the bristles having a bristle length from the radial outer surface to an outer end of the bristles;
d) a leading hair blocking member provided adjacent a forward rotational side of the bristles, the leading hair blocking member having a length from the radial outer surface to an outer end of the leading hair blocking member; and,
e) a trailing hair blocking member provided adjacent a rearward rotational side of the bristles, the trailing hair blocking member having a length from the radial outer surface to an outer end of the trailing hair blocking member,
wherein the trailing hair blocking member interacts with the floor during rotation of the brush, and
wherein the trailing hair blocking member is made of an elastomeric material.

2. The surface cleaning apparatus of claim 1 wherein the leading hair blocking member abuts the forward rotational side of the bristles.

3. The surface cleaning apparatus of claim 1 wherein the trailing hair blocking member abuts the rearward rotational side of the bristles.

4. The surface cleaning apparatus of claim 1 wherein the leading hair blocking member is spaced from 1 to 5 mm, optionally from 2 to 4 mm, forward of the forward rotational side of the bristles.

5. The surface cleaning apparatus of claim 1 wherein the trailing hair blocking member is spaced from 1 to 5 mm, optionally from 2 to 4 mm, rearward of the rearward rotational side of the bristles.

6. The surface cleaning apparatus of claim 1 wherein the length of the leading hair blocking member is smaller than the length of the bristles.

7. The surface cleaning apparatus of claim 6 wherein the length of the trailing hair blocking member is proximate the length of the bristles.

8. The surface cleaning apparatus of claim 1 wherein the length of the trailing hair blocking member is proximate the length of the bristles.

9. The surface cleaning apparatus of claim 1 wherein the length of the trailing hair blocking member is at least 80% the length of the bristles but does not extend outward of the outer end of the bristles.

10. The surface cleaning apparatus of claim 1 wherein, when the bristles and the trailing hair blocking member each contact the floor, the outer ends of the leading and trailing hair blocking members define a plane that is adjacent the outer ends of the bristles.

11. The surface cleaning apparatus of claim 6 wherein, when the bristles and the trailing hair blocking member each contact the floor, the outer ends of the leading and trailing hair blocking members define a plane that is adjacent the outer ends of the bristles.

12. The surface cleaning apparatus of claim 1 wherein the leading and trailing hair blocking members each comprises a flexible member that extends between the first and second axially spaced apart sides.

13. The surface cleaning apparatus of claim 12 wherein at least one of the leading and trailing hair blocking members comprises a plurality of abutting segments positioned axially along the rotatably mounted brush.

14. The surface cleaning apparatus of claim 12 wherein at least one of the leading and trailing hair blocking members extends continuously between the first and second axially spaced apart sides.

15. A surface cleaning apparatus comprising:
a) an air flow path extending from a dirty air inlet to a clean air outlet with an air treatment member and a suction motor provided in the air flow path;
b) a rotatably mounted brush associated with the dirty air inlet, the rotatably mounted brush having an axis of rotation, a length in the axial direction, a radial outer surface, and first and second axially spaced apart sides;
c) a plurality of bristles extending outwardly from the radial outer surface, the bristles having a bristle length from the radial outer surface to an outer end of the bristles;
d) a leading hair blocking member provided adjacent a forward rotational side of the bristles, the leading hair blocking member having a length from the radial outer surface to an outer end of the leading hair blocking member; and,
e) a trailing hair blocking member provided adjacent a rearward rotational side of the bristles, the trailing hair blocking member having a length from the radial outer surface to an outer end of the trailing hair blocking member

wherein the trailing hair blocking member is less flexible than the leading hair blocking member, and
wherein, when the bristles and the trailing hair blocking member each contact the floor, the outer ends of the leading and trailing hair blocking members define a plane that is adjacent the outer ends of the bristles.

16. The surface cleaning apparatus of claim 15 wherein the leading and trailing hair blocking members are less flexible than the bristles.

17. A surface cleaning apparatus comprising:
a) an air flow path extending from a dirty air inlet to a clean air outlet with an air treatment member and a suction motor provided in the air flow path;
b) a rotatably mounted brush associated with the dirty air inlet, the rotatably mounted brush having an axis of rotation, a length in the axial direction, a radial outer surface, and first and second axially spaced apart sides;
c) a plurality of bristles extending outwardly from the radial outer surface, the bristles having a bristle length from the radial outer surface to an outer end of the bristles;
d) a leading hair blocking member provided forward of a forward rotational side of the bristles, the leading hair blocking member having a length from the radial outer surface to an outer end of the leading hair blocking member; and,
e) a trailing hair blocking member provided rearward of a rearward rotational side of the bristles, the trailing hair blocking member having a length from the radial outer surface to an outer end of the trailing hair blocking member,
wherein, when the bristles and the trailing hair blocking member each contact a floor, the outer ends of the leading and trailing hair blocking members define a plane that is adjacent the outer ends of the bristles, and
wherein the length of the leading hair blocking member is smaller than the length of the bristles.

18. The surface cleaning apparatus of claim 17 wherein the length of the trailing hair blocking member is at least 80% the length of the bristles but does not extend outward of the outer end of the bristles.

19. The surface cleaning apparatus of claim 17 wherein the leading and trailing hair blocking members are less flexible than the bristles.

20. The surface cleaning apparatus of claim 17 wherein the trailing hair blocking member is less flexible than the leading hair blocking member.

Assignees

• Omachron Intellectual Property Inc

Inventors

• Conrad Wayne Ernest
• Petersen Dave

Classifications

• A47L9/0477 Primary

  Rolls · CPC title

• A47L9/0613

  with means specially adapted for picking up threads, hair or the like, e.g. brushes, combs, lint pickers or bristles pads · CPC title

• A47L9/0494

  Height adjustment of dust-loosening tools · CPC title

• A47L7/0066

  adapted for removing nail dust, hair or the like · CPC title

• A46B3/20

  the bristles being fixed or joined in rubber bodies, e.g. in soft rubber · CPC title