Cleaner head
AssigneeDyson Technology Limited
InventorsThomas James Dunning Follows, Stephen Benjamin Courtney
Life of this patent
Estimating the term…
Abstract
A cleaner head for a surface treating appliance includes a housing and a rotatable brush bar located within the housing. The brush bar includes a first plurality of bristles and a second plurality of bristles which protrude radially outwardly beyond the first plurality of bristles. The second plurality of bristles has a surface resistivity in the range from 1×10−5 to 1×1012 Ω/sq so that static electricity residing on a floor surface to be cleaned is discharged upon contact with the conductive bristles.
Claims32
A cleaner head for a surface treating appliance comprising a sole plate comprising a suction opening, an agitating apparatus comprising first surface agitating members configured to agitate dirt or dust from a carpeted floor surface and second surface agitating members configured to sweep dust from a hard floor surface, the second surface agitating members extending outwardly from the apparatus beyond the first surface agitating members and having a lower surface resistivity than the first surface agitating members, and a plurality of support members rotatably mounted on the sole plate for supporting the cleaner head on a surface to be cleaned, wherein the first agitating members do not protrude beneath a plane extending between the lowermost extremities of the support members and wherein the second surface agitating members protrude beneath a plane extending between the lowermost extremities of the support members.
A cleaner head for a surface treating appliance comprising a sole plate comprising a suction opening, an agitating apparatus comprising first surface agitating members configured to agitate dirt or dust from a carpeted floor surface and second surface agitating members configured to sweep dust from a hard floor surface, the second surface agitating members extending outwardly from the apparatus beyond the first surface agitating members and being formed from an electrically conductive material and a plurality of support members rotatably mounted on the sole plate for supporting the cleaner head on a surface to be cleaned, wherein the first agitating members do not protrude beneath a plane extending between the lowermost extremities of the support members and wherein the second surface agitating members protrude beneath a plane extending between the lowermost extremities of the support members.
A cleaner head for a surface treating appliance comprising a sole plate comprising a suction opening, an agitating apparatus comprising first surface agitating members configured to agitate dirt or dust from a carpeted floor surface and second surface agitating members configured to sweep dust from a hard floor surface, the second surface agitating members extending outwardly from the apparatus beyond the first surface agitating members and having a lower surface resistivity than the first surface agitating members and the first agitating members and the second agitating members being substantially equally angularly spaced around the agitating apparatus, and a plurality of support members rotatably mounted on the sole plate for supporting the cleaner head on a surface to be cleaned, wherein the first agitating members do not protrude beneath a plane extending between the lowermost extremities of the support members and wherein the second surface agitating members protrude beneath a plane extending between the lowermost extremities of the support members.
Dependencies are inferred from the claim text.