Cleaning device
First Claim
1. In a cleaning device including a housing adapted for movement in two opposite directions over a one cleaning body having an upwardly directed shaft and a ring of radially downwardly directed bristles;
- a pair of vertically spaced bearings provided in said housing for rotatably supporting said shaft, one of said bearings defining an elongated opening the major axis of which is oriented in the direction of movement of said housing to permit the pivoting of said shaft about a pivot point defined by the other bearing and thus, in response to a change in the direction of movement of said housing, alternately tilting one of two opposite positions of said ring of bristles into engagement with said surface; and
driving means for imparting rotary movement to said shaft in a direction dependent on the direction of movement of said housing.
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Accused Products
Abstract
A cleaning device has a main brush which picks up dirt from a surface to be cleaned and deposits it in dirt-collecting receptacles as the cleaning device is moved over the surface to be cleaned. A pair of additional brushes is mounted in corner regions of the housing and delivers dirt toward the main brush. The additional brushes are rotated as the cleaning device is moved over the surface in opposite directions, and they are mounted in bearings for limited pivoting substantially in the opposite directions so that those portions of the bristles of the additional brushes which move toward the main brush are in contact with the surface to be cleaned. A driving wheel rotates the additional brushes in opposite angular directions depending on the direction of movement of the cleaning device, the additional brushes and the driving wheel being partly supported in a main portion of the housing, and partly in a cover which is connected to the main portion of the housing. Each of the additional brushes may be mounted in a sleeve with snap action, the respective sleeve carrying a bevel gear which meshes with a bevel gear mounted at an end portion of a shaft on which the driving wheel is mounted for shared rotation therewith. One of the bearings which supports the sleeve and thus the additional brush is shaped as an elongated opening which extends in the opposite directions or at slight angles thereto toward the center of the cleaning device.
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Citations
13 Claims
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1. In a cleaning device including a housing adapted for movement in two opposite directions over a one cleaning body having an upwardly directed shaft and a ring of radially downwardly directed bristles;
- a pair of vertically spaced bearings provided in said housing for rotatably supporting said shaft, one of said bearings defining an elongated opening the major axis of which is oriented in the direction of movement of said housing to permit the pivoting of said shaft about a pivot point defined by the other bearing and thus, in response to a change in the direction of movement of said housing, alternately tilting one of two opposite positions of said ring of bristles into engagement with said surface; and
driving means for imparting rotary movement to said shaft in a direction dependent on the direction of movement of said housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- a pair of vertically spaced bearings provided in said housing for rotatably supporting said shaft, one of said bearings defining an elongated opening the major axis of which is oriented in the direction of movement of said housing to permit the pivoting of said shaft about a pivot point defined by the other bearing and thus, in response to a change in the direction of movement of said housing, alternately tilting one of two opposite positions of said ring of bristles into engagement with said surface; and
Specification