US 4,355,436 AGranted

Vacuum cleaners

OwnerSamuel Hertzberginventor

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Abstract

Wall-floor edge cleaning ability in a vacuum cleaner is improved by a disk brush positioned rim with its bristles capable of floor contact and the hard, unyielding parts entirely contained in a gap in a bumper guard affixed to an exterior side wall of the housing. A stub shaft, loosely penetrating an aperture in the said housing side wall, is rigidly affixed at one extremity to the hub of the disk brush and at the other extremity axially to a free, unfettered end of a revolvable brush roll, the said brush roll horizontally supported within the nozzle area between the housing side walls. The disk brush is consequently revolvable with the brush roll. The disk brush may join the stub shaft end on a slightly oblique plane to assure better agitation of a carpet nap and direct penetration of a wall-floor edge by the rim bristles. To facilitate assembly and replacement of worn parts, the members are removably joined. A link-slot cutout in the hub section of the disk brush may be utilized as wear occurs to adjust rim bristle contact with a floor surface.

Claims15

Dependent claims

In a vacuum cleaner characterized by a revolvable brush roll horizontally supported in the nozzle area within the side walls of a housing, the combination of a brush roll with a free end, an aperture in the side wall of the housing adjacent the said free end in axial alignment with it, a stub shaft, at least a portion of a disk brush incorporating at least a portion of the rim section and its circumference bristles and a portion of the hub section, and a bumper guard with a gap therein affixed to the aforesaid exterior side wall of the housing, the gap adjacent the aperture;

the disk brush portion positioned within the gap in the bumper guard rigidly affixed at the hub section to an end of the stub shaft and the balance of the stub shaft loosely penetrating the aperture in the housing side wall in rigid axial engagement with the brush roll end, the rim bristles capable of making contact with a floor surface, and the hard, unyielding parts of the disk brush portion confined within the aforesaid gap;
the disk brush portion thereby revolvable with the brush roll and the room wall protected against abrasion as the bumper guard is run along a wall-floor edge.

Dependencies are inferred from the claim text.