Black & Decker Patente

According to examples, a power equipment (100) may include a base member (110), a drive shaft (220) to drive a cutting chain (114) over a chain bar (112), and an oil tank (120) mounted to the base member (110). A first portion (202) of an oil pump (200), an inlet hose (206), and an outlet hose (122) may be housed within the oil tank (120), in which the inlet hose (206) may supply oil contained in the oil tank (120) to the first portion (202) of the oil pump (200) and the outlet hose (122) may supply oil from the first portion (202) of the oil pump (200) to the cutting chain (114). By housing the first portion (202) of the oil pump (200), the inlet hose (206), and the outlet hose (122) within the oil tank (120), the size of a cutting head (102) of the power equipment (100) may significantly be reduced while also reducing the likelihood of the cutting head (102) snagging objects, such as tree limbs or branches.

An outdoor power equipment system includes: a motor; a power supply; and a user-engageable safety device, the safety device comprising: a rotatable member connected to a handle of the outdoor power equipment, wherein the rotatable member is configured to rotate about a rotation axis between a locked position and an unlocked position; a plunger operatively connected to the rotatable member such that rotation of the rotatable member causes the plunger to translate along the rotation axis of the rotatable member; and a switch, wherein: the plunger is configured to open the switch when the rotatable member is in the locked position to electrically connect the power supply to the motor, and wherein the plunger is configured to close the switch when the rotatable member is in the unlocked position to electrically isolate the power supply from the motor.

A compacting power tool comprising: a housing; a motor mounted within or on the housing; a reciprocating drive mechanism coupled to the motor, wherein reciprocating drive mechanism comprises a reciprocating piston movable between a first position and a second position; a compacting foot coupled to the reciprocating drive mechanism and configured to reciprocate and engage a surface to be compacted when the motor is operating; a user operated switch for starting operation of the compacting power tool; and a controller configured to cause, in response to a signal from the user operated switch, the motor to gradually increase in speed up to an operating speed.

A portable electric pressing tool comprising: an electric motor; a pressing mechanism having a pair of jaws and a driver wherein the pressing mechanism is operatively coupled to the electric motor for causing axial displacement of the driver between a home position and an active position for actuating the jaws; a home position sensor for generating output indicative that the driver has reached the home position during a reset stage of operation in which the driver is moved towards the home position; and a controller for receiving motor turn information indicative of the number of turns of the electric motor and for controlling axial movement of the driver in use based only on the motor turn information and the output generated by the home position sensor.

A power tool is provided including a brushless motor having a stator defining a plurality of phases, a rotor rotatable relative to the stator, and a plurality of power terminals electrically connected to the plurality of phases; a power unit having a plurality of power switches connected electrically between a power source and the plurality of power terminals and operable to deliver power to the motor; and a control unit interfaced with the power unit to output a drive signal to one or more of the plurality of power switches to drive the plurality of phases of the motor over a plurality of sectors of the rotor rotation, the control unit being configured to detect an initial position of the rotor, commutate the motor beginning at the initial position of the rotor using a low-speed motor commutation scheme until an output speed of the rotor exceeds a speed threshold, and commutate the motor based on a back-electromotive force (back-EMF) voltage of the motor after the output speed of the rotor exceeds the speed threshold, wherein in the low-speed commutation scheme, the control unit applies a first plurality of voltage pulses to a present sector of the plurality of sectors and a second plurality of voltage pulses to a next sector of the plurality of sectors, and detects a transition of the rotor from the present sector to the next sector based on motor current measurements associated with the first plurality of voltage pulses and the second plurality of voltage pulses.

An electric motor includes a motor housing and a shaft that extends in a longitudinal direction through a length of the motor housing. A first motor is disposed within the motor housing and mounted to the shaft, and a second motor is disposed within the motor housing and mounted to the shaft. The electric motor includes an adaptor disposed within the motor housing, and a portion of the first motor and a portion of the second motor are disposed within the adaptor. The adaptor supports and pilots the first motor and the second motor. At least one motor controller is disposed on the adaptor and within the motor housing, and is electrically connected to the first motor and to the second motor.

A spine for a harness system may include an inner plate having a set of locking notches arranged along a first direction and a rail extending in the first direction. The spine may also include an outer plate having a channel and a hinged locking element having a tab to selectively engage the set of locking notches. The length of the spine may be varied by varying the locking notch into which the tab of the hinged locking element is engaged. By varying the length of the spine, the distance between a shoulder member and a belt member of the harness system may be changed.

A power tool comprising: a housing, a motor assembly disposed in the housing, an output shaft at least partially received in and rotatable relative to the housing, and an impact assembly operatively coupled with the motor assembly and configured to be driven thereby, the impact assembly comprising: a hammer defining a hammer chamber therein for receiving a fluid therein and an inwardly protruding impact member, the hammer configured to be rotationally driven upon rotation of the motor assembly; an anvil defining an anvil chamber therein, the anvil at least partially disposed in the hammer chamber and configured to rotationally drive the output shaft; the anvil comprising a body portion configured to be rotatable relative to the hammer, and a reciprocating member configured to selectively move radially outwardly relative to the body portion to be impacted by the impact member of the hammer according to pressure of fluid in the anvil chamber so that the hammer imparts rotational movement to the body portion wherein the impact assembly is configured to operate in an environment having an ambient temperature range between -30°C and 50°C without stall of the impact assembly.

A compacting power tool comprising: a housing; a motor electrically connected to a battery pack; a reciprocating drive mechanism coupled to the motor; and a compacting foot coupled to the reciprocating drive mechanism and configured to engage a surface to be compacted; and a controller configured to: receive at least one signal relating to one or more parameters and/or variables of the compacting power tool; determine a status of the compacting power tool based on the received at least one signal; and determine a change in the status of the compacting power tool corresponding to an operational change in the compacting power tool.

A power tool comprises a housing and an inner mechanism mounted at least partially within the housing. The inner mechanism is configured to be reciprocally moveable with respect to the housing and the inner mechanism has a motor fan assembly. The power tool comprises an air inlet and an air outlet positioned in the housing and a cooling airflow path extending between the air inlet and the air outlet via the motor fan assembly. The power tool also comprises at least one air conduit located on the airflow path configured to guide the cooling airflow from the air inlet to the motor fan assembly wherein a first end of the air conduit is fixed and a second end of the at least one air conduit is a free end.

A power control module may include a circuit board; a plurality of power switch devices including a plurality of high-side power switches and a plurality of low-side power switches mounted on the circuit board and configured as a multi-phase inverter circuit to provide a plurality of output phase terminals to the electric motor, each power switch device including a first surface mounted on the circuit board and through which at least source and drain terminals of the power switch device are coupled to the circuit board, and a second surface including a metal surface electrically coupled to the drain terminal of the power switch device; and a plurality of power output terminals mounted discretely on the plurality of low-side power switches and electrically contacting the metal surface of the plurality of low-side power switches to be electrically coupled to the plurality of output phase terminals of the inverter circuit.

A control module for a high-power electric motor may include a metal base, an insulating wall fastened to the metal base, and a circuit board disposed within the insulating wall. The circuit board may include a first surface that faces the metal base and a second surface opposite the first surface. A plurality of power switches may be mounted on the first surface of the circuit board and configured as an inverter circuit. A thermally conductive electrically insulating layer may be between the circuit board and the metal base. Power output terminals may be mounted on the second surface of the circuit board. An insulating frame may extend between at least one pair of the power output terminals. One or more fasteners may be received through the insulating frame, the circuit board, and the thermally conductive electrically insulating layer and fastened to the metal base.

A pipe preparation tool has a housing (1), a motor (13) mounted within the housing (1), a head mechanism (40) disposed on the housing (1), a rotatable blade holder (42) disposed within the head mechanism (40), and a blade (42B) attached to the blade holder (42). The tool may include a power tool battery pack (12) attached to the housing (1) and electrically connected to the motor (13). A pipe may engage the blade (42B) in a first orientation and a second orientation opposite to the first orientation. The blade (42B) may have first and second opposite cutting edges, wherein the pipe can engage the first cutting edge (42BI, 42BO) of the blade (42B) when in the first orientation and the second cutting edge (42BI, 42BO) of the blade (42B) when in the second orientation.

A float tool comprises a housing connectable to a float for finishing a surface. A pole pivotally connected to the housing and arranged to pivot about a pivot axis. A vibration generator has a motor mounted to the pole. At least one rotatable eccentric mass is operatively coupled to the motor wherein the least one rotatable eccentric mass is rotatable about the pivot axis.

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