An infinity brush has a flaccid belt configured to define a lemniscate. A plurality of work-contacting segments protrude from and are carried by the flaccid belt. A mechanical drive rotates the flaccid belt. Various embodiments of the flaccid belt include a single lemniscate, a plurality of lemniscates, and various simulated lemniscates. In one embodiment, the infinity brush bristle includes non-cylindrical brush bristles with a longitudinal shaft having at least one diameter transition, while other bristles comprise beads of various oval, circular, and cylindrical geometries.

A sweeping brush for an automatically moving cleaning device has a rotational axis receptacle for receiving a rotational axis of the cleaning device and at least one bundle receptacle that extends outwardly from a transition area on the rotational axis receptacle, which holds a bristle bundle having a plurality of bristles. The bundle receptacle is arched as viewed in an axial direction of the rotational axis receptacle. In order to optimize known sweeping brushes in terms of their service life and cleaning properties, the bundle receptacle is fabricated out of an elastic material.

A sweeping brush for an automatically moving cleaning device has a rotational axis receptacle for receiving a rotational axis of the cleaning device and at least one bundle receptacle that extends outwardly from a transition area on the rotational axis receptacle, which holds a bristle bundle having a plurality of bristles. The bundle receptacle is arched as viewed in an axial direction of the rotational axis receptacle. In order to optimize known sweeping brushes in terms of their service life and cleaning properties, the bundle receptacle is fabricated out of an elastic material.

Controllable brush, comprising a bristle carrier (BC) having a plurality of bristles (B), and a supplementary carrier (SC) having a plurality of protrusions (P), a distance (d) between the supplementary carrier (SC) and the bristle carrier (BC) being modifiable, whereby decreasing the distance (d) results in the protrusions (P) being inserted through the bristle carrier (BC). Decreasing the distance (d) results in the protrusions (P) being inserted inside the bristles (B). Alternatively, decreasing the distance (d) results in the protrusions (P) being inserted between the bristles (B). The controllable brush may further comprise an actuator for modifying the distance (d), and a control unit for controlling the actuator in response to a sensor output. The sensor may be arranged for measuring a force experienced by the brush. Alternatively, the sensor may be a camera of a smartphone.

Controllable brush, comprising a bristle carrier (BC) having a plurality of bristles (B), and a supplementary carrier (SC) having a plurality of protrusions (P), a distance (d) between the supplementary carrier (SC) and the bristle carrier (BC) being modifiable, whereby decreasing the distance (d) results in the protrusions (P) being inserted through the bristle carrier (BC). Decreasing the distance (d) results in the protrusions (P) being inserted inside the bristles (B). Alternatively, decreasing the distance (d) results in the protrusions (P) being inserted between the bristles (B). The controllable brush may further comprise an actuator for modifying the distance (d), and a control unit for controlling the actuator in response to a sensor output. The sensor may be arranged for measuring a force experienced by the brush. Alternatively, the sensor may be a camera of a smartphone.

A first work tool arm is rotatably attached to a frame or reference structure, a second work tool arm rotatably attached to the first work tool arm, and a work tool attached to an end of the second work tool arm. An actuator and a spring are each rotatably attached to the second work tool arm and configured such that separate movement of the first work tool arm relative to the frame or reference structure and movement of the second work tool arm and work tool relative to the first work tool arm are achieved with actuation of the actuator.

A first work tool arm is rotatably attached to a frame or reference structure, a second work tool arm rotatably attached to the first work tool arm, and a work tool attached to an end of the second work tool arm. An actuator and a spring are each rotatably attached to the second work tool arm and configured such that separate movement of the first work tool arm relative to the frame or reference structure and movement of the second work tool arm and work tool relative to the first work tool arm are achieved with actuation of the actuator.

The double action cleaning tool of the present invention includes a dynamic double action dual brush head and a handle. The dynamic double action dual brush head includes two brush heads rotatably attached to a brush head base, allowing the brush heads to independently rotate about the axis in which it is rotatably attached to the brush head base. A mechanical device capable of storing and releasing energy is connected between the two brush heads, which is rigidly attached to the brush head base. The double action cleaning tool stores energy in the form of potential energy in the mechanical energy storage device of the dynamic double action dual brush head during the sweeping stroke of the double action push broom. At the end of the sweeping stroke, the stored potential energy is converted into kinetic energy and rotates the dual brush, thereby providing an additional sweeping motion.

The double action cleaning tool of the present invention includes a dynamic double action dual brush head and a handle. The dynamic double action dual brush head includes two brush heads rotatably attached to a brush head base, allowing the brush heads to independently rotate about the axis in which it is rotatably attached to the brush head base. A mechanical device capable of storing and releasing energy is connected between the two brush heads, which is rigidly attached to the brush head base. The double action cleaning tool stores energy in the form of potential energy in the mechanical energy storage device of the dynamic double action dual brush head during the sweeping stroke of the double action push broom. At the end of the sweeping stroke, the stored potential energy is converted into kinetic energy and rotates the dual brush, thereby providing an additional sweeping motion.

A toothbrush apparatus and system designed to simplify the cleaning of all surfaces of the teeth, by simplifying the brushing process to a single motion performed on the top and bottom rows of teeth, and thereby by reducing the cognitive difficulty of learning the brushing task. Simplification is accomplished by using a unique brush head that wraps around the teeth to cover the inside, top, and outer surface of the teeth at once, while a pivot mechanism with a restorative force component attaches the brush head to the brush stem, and allows the brush head to rotate about itself. These two elements combine to allow the brush head to glide around the teeth like a train on a track as the brush is moved around the mouth.