Cleaning apparatus
First Claim
1. In a vacuum cleaning apparatus of the dry, wet and wet/dry types having a cleaning head assembly, a rotatable brush carried on a stationary horizontal shaft within and spanning said head assembly, said brush being adapted to loosen and agitate dirt on a surface to be cleaned, means for rotatably driving said brush, a dirt collection zone, and vacuum means communicating with the interior of said cleaning head assembly for sucking up dirt and carrying it to said dirt collection zone, the improvement comprising said rotatable brush being movable toward and upwardly from said surface to be cleaned independently at each of its ends within said head assembly in response to variations in the surface or nap height of rug to be cleaned to automatically maintain contact between said brush and the surface to be cleaned and including sliding shaft blocks at each end of said shaft, said sliding shaft blocks being carried by resilient spring means connected to said head assembly and said sliding shaft blocks being vertically slidable with respect to said head assembly.
3 Assignments
0 Petitions
Accused Products
Abstract
In a vacuum cleaning apparatus of the dry, wet and wet/dry types having a cleaning head assembly, a rotatable brush carried within and spanning said head assembly adapted to loosen and agitate dirt on a surface to be cleaned, means for rotatably driving said brush, a dirt collection zone, and vacuum means communicating with the interior of said cleaning head assembly for sucking up dirt and carrying it to said dirt collection zone; the improvement comprising said brush being rotatable about a horizontal shaft, the shaft being carried at each of its ends by a movable shaft block, said shaft block being slidably received in a shaft block retainer case affixed to said cleaning head assembly, each of said shaft blocks being carried within its respective shaft block retainer case by resilient spring means biasing said shaft blocks and brush toward said surface to be cleaned, whereby each of said shaft blocks can independently slidably move upwardly within said shaft block retainer cases in response to variations in the surface or nap height of rug to be cleaned to automatically maintain contact between said brush and the surface to be cleaned.
38 Citations
11 Claims
- 1. In a vacuum cleaning apparatus of the dry, wet and wet/dry types having a cleaning head assembly, a rotatable brush carried on a stationary horizontal shaft within and spanning said head assembly, said brush being adapted to loosen and agitate dirt on a surface to be cleaned, means for rotatably driving said brush, a dirt collection zone, and vacuum means communicating with the interior of said cleaning head assembly for sucking up dirt and carrying it to said dirt collection zone, the improvement comprising said rotatable brush being movable toward and upwardly from said surface to be cleaned independently at each of its ends within said head assembly in response to variations in the surface or nap height of rug to be cleaned to automatically maintain contact between said brush and the surface to be cleaned and including sliding shaft blocks at each end of said shaft, said sliding shaft blocks being carried by resilient spring means connected to said head assembly and said sliding shaft blocks being vertically slidable with respect to said head assembly.
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8. In a vacuum cleaning apparatus having a cleaning head assembly, a rotatable brush carried within and spanning said head assembly adapted to loosen and agitate dirt on a surface to be cleaned, means for rotatably driving said brush, a dirt collection zone, and vacuum means communicating with the interior of said cleaning head assembly for sucking up dirt and carrying it to said dirt collection zone;
- the improvement comprising said brush being rotatable about a horizontal shaft, the sliding shaft being carried at each of its ends by a sliding shaft block, said shaft block being slidably received in a shaft block retainer case affixed to said cleaning head assembly, each of said sliding shaft blocks being carried within its respective shaft block retainer case by resilient spring means biasing said sliding shaft blocks and brush toward said surface to be cleaned, whereby each of said sliding shaft blocks and brush can independently slidably move within said shaft block retainer cases in response to variations in the surface to be cleaned to automatically maintain contact between said brush and the surface to be cleaned.
- View Dependent Claims (9, 10, 11)
Specification