Black & Decker Patente

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An actuator for actuating a switch of a powered device, the actuator having a plurality of positions in which the actuator is magnetically held in position, the actuator comprising: a first actuator portion comprising a magnet and a first magnetic element having a first plurality of limbs, whereby magnetic flux of the magnet is directed through the first plurality of limbs; and a second actuator portion comprising a second magnetic element having a second plurality of limbs for receiving the magnetic flux from the first plurality of limbs, wherein the second actuator portion is movable relative to the first actuator portion; the actuator having a plurality of positions in which limbs of the first plurality of limbs align with limbs of the second plurality of limbs thereby to couple the magnetic flux through the first magnetic element and the second magnetic element, the coupled magnetic flux resisting relative movement between the first actuator portion and the second actuator portion.

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An impact power tool includes a motor, a controller, and an impact mechanism configured to rotationally drive an output spindle. The controller is configured to control power delivered to the motor, during a third phase of operation after a second phase of operation and starting upon expiration of a predetermined time period. The third phase has one or more of a third non-zero target rotational speed, a third duty cycle setting, a third conduction band setting, or a third advance angle setting. The controller is configured to control power delivered to the motor, during a fourth phase of operation after the third phase upon detection of a reduction in load on the output spindle or cessation of impacting. The fourth phase has one or more of a fourth non-zero target rotational speed, a fourth duty cycle setting, a fourth conduction band setting, or a fourth advance angle setting.

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A router includes a router body and a router base adjustably connected to the router body. A motor is housed in the router body and an output member is driven by the motor. The router base includes a mounting rod, a latching lever and an adjustment lever. The latching lever and the adjustment lever are both mounted on the mounting rod.

A reciprocating saw blade includes an elongated blade body extending along a blade axis and having a rear end, a front end, a cutting edge having a plurality of teeth, a non-cutting edge opposite the cutting edge; and a tang coupled to the rear end and configured to be received in a blade holder of a powered reciprocating saw. The cutting edge includes inclined and declined cutting edge portions. The inclined cutting edge portion extends away from the blade axis and toward the front end at an acute first angle and extends from a first tooth to a second tooth. The first tooth is closer to the rear end and closer to the blade axis than the second tooth. The declined cutting edge portion extends toward the blade axis and toward the front end at an acute second angle that is greater than the first angle and extends from a third tooth to the first tooth. The first tooth is closer to the front end and closer to the blade axis than the third tooth.

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A handheld pole sander for performing different surface machining treatments including but not limited to sanding, polishing, grinding or rubbing a work surface comprising:an elongate body (102) having two ends; a sanding head (100) attached via a pivot mechanism (110) to a first end of the elongate body (102); an electric motor (114) mounted on the sander, the electric motor (114) being electrically controlled by control electronics (144) which provides electronic control signals to activate the motor (114); wherein the sanding head (100) comprises: a hood (112); and an output spindle (118) which projects from the hood (112); wherein the electric motor (114), when activated, rotatingly drives the output spindle (118); wherein the elongate body comprises a first pole (196) and a second pole (198) which are capable of sliding in and out of each other in a telescopic manner; wherein the first pole (196) and second pole (198) are made from electrically conductive material; wherein at least one seal (204, 210, 212) is located between the overlapping parts of the first pole and second pole (198); characterised in that at least part of the at least one seal is manufactured from an electrically conductive material and provides an electrical connection between the first pole and second pole.

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A motor is provided including a motor housing having an open end; a stator disposed within the motor housing and including a stator core, stator windings, and an end insulator that electrically insulate the stator core from the stator windings and includes an annular body; a rotor rotatably received within the stator and including a rotor shaft extending along a longitudinal axis and permanent magnets; and a bearing bridge including a center pocket arranged to support a bearing of the rotor shaft. The bearing bridge is received at least partially within the end insulator. The annular body of the end insulator includes at least one peripheral opening located within the motor housing, and the bearing bridge is radially piloted relative to the motor housing via a retaining member received through the at least one peripheral opening.

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A method of determining an airflow parameter in a vacuum cleaner comprising a motor-fan assembly comprises receiving one or more signals relating to one or more operational parameters of the motor. The method further comprises determining a torque of a rotatable shaft of the motor based on the one or more operational parameters. The method also comprises determining an airflow parameter based on the determined torque of the rotatable shaft of the motor.

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A cleaning accessory for a vacuum cleaner comprises a housing having a first air inlet on an underside of the housing and an air outlet and a first airflow path between the first air inlet and the air outlet. The cleaning accessory also comprises at least one cleaning brush having at least one flexible cleaning element projecting outwards from a side of the housing. The cleaning accessory also comprises at least one side air inlet on the side of the housing and a second airflow path between the at least one side inlet and the air outlet. The at least one flexible cleaning element is arranged to engage a surface to be cleaned adjacent to the at least one side air inlet.

A cleaning accessory for a vacuum cleaner comprises a housing. At least one rotatable cleaning brush is rotatably mounted to the housing and configured to engage a surface to be cleaned. The at least one rotatable cleaning brush comprises at least one flexible cleaning element projecting outwards from a side of the housing. The at least one flexible cleaning element is arranged to rotate in a cleaning position and rotate in a disengaged position whereby the at last one flexible cleaning element engages the surface to be cleaned when rotating in the cleaning position and the at last one flexible cleaning element is remote from the surface to be cleaned when rotating in the disengaged position.

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