BLACK AND DECKER INC. Patent applications |
Patent application number | Title | Published |
20140261551 | CORD CLAMP CURRENT SENSOR FOR DUST COLLECTOR - A dust collection system includes a sensor body, a selection circuit, a detection circuit, and a motor control circuit. The sensor body detachably encircles a cord supplying power to a power tool. The cord includes a neutral conductor and a hot conductor. The sensor body houses sensors that, in response to current flow through the cord, generate sensor signals. The selection circuit generates a positive output signal in response to the sensor signals and generates a negative output signal in response to the sensor signals. The detection circuit generates a current detection signal in response to a comparison of the positive and negative output signals with a threshold. The motor control circuit selectively turns on a motor of the dust collection system in response to the current detection signal. | 09-18-2014 |
20120302147 | AIRFOLW ARRANGEMENT FOR A POWER TOOL - The present invention is directed to an airflow generation and particle dispersion arrangement for a power tool (e.g., an angle grinder). The arrangement includes a motor, an airflow generation assembly, and a particle dispersion assembly. The airflow generation assembly includes a fan driven by the motor. When engaged, the driven fan generates an airstream that is drawn through the power tool. The particle dispersion assembly includes a passive fan that is not driven by the motor, but instead is driven by the airstream. In operation, the passive fan generates centrifugal and mechanical forces sufficient to remove particles from intake air passing through the particle dispersion assembly. | 11-29-2012 |
20120272799 | RECIPROCATING SAW - A reciprocating saw includes a carrier operable to cooperate with a motor to translate rotational movement of the motor into reciprocal linear actuation of a saw blade. A carrier is slidably disposed within the housing and includes a first portion adapted to receive a saw blade and a second portion having a slot therethrough. A rotatable element is fixed for rotation about an output shaft of the motor. A follower operably interconnects the carrier and the rotatable element wherein rotation of the rotatable element provides reciprocal linear motion of the carrier whereby the follower follows a reciprocal linear path within the slot. | 11-01-2012 |
20120126495 | CHUCK WITH SLEEVE HAVING METAL INSERT - A tool chuck includes a body supporting a plurality of jaws, and a sleeve that is operatively connected to the jaw. The sleeve may be rotated to open and close the jaws. The sleeve includes a radial inward facing surface with recesses that are covered by a metal insert. The metal insert provides a metal-to-metal interface for a lock feature. | 05-24-2012 |
20120074878 | METHOD AND SYSTEM FOR PREVENTION OF MOTOR REVERSAL - A power tool includes a brushless DC motor housed inside a tool housing, an input unit, and a control unit. The motor includes a rotor, a stator, and at least one sensor positioned to sense a state of the rotational position of the rotor inside the stator. A control unit controls commutation of the motor through a series of power switches coupled to the power supply. The control unit receives a current sensor state from the sensor and a user-selected speed from the input unit and determines whether the motor has reversed direction using the user-selected speed and the current sensor state. The control unit disables commutation of the motor if the motor has reversed direction until a proper current sensor state is received from the sensor. | 03-29-2012 |
20120071073 | WEARABLE BACKING FOR AN ABRASIVE FLAP DISK - A structure for a backing plate of an abrasive disk is disclosed. The structure includes layers of abrasive resin interspersed with layers of reinforcing fiberglass. The layers are generally disk shaped and cover certain radial intervals of the entire backing plate between the inner diameter and the outer diameter. For example, a radial stress profile plotting the stress along a radial line from inner to outer diameter can be determined. The amount and radial positioning of reinforcing layers (e.g., reinforcing fiberglass) may then be determined. An appropriate amount of reinforcing layers may then be placed within the radial intervals that experience the highest stress. | 03-22-2012 |
20120031639 | REAR HANDLE - A power tool, for example a hammer drill comprising: a housing; a handle having two ends, the first end being moveably mounted to the housing via a first mounting assembly, the second end being moveably mounted to the housing via a second mounting assembly; wherein the first mounting assembly comprises: a first part mounted on the housing and a second part mounted on the first end of the handle, one part comprising a sleeve, the other part comprising a rod mounted in an axially slideable manner in the sleeve to enable the first end of the handle to slide towards or away from the housing; and a biasing mechanism connected between the two parts which biases the first end of the handle away from the housing; wherein the second mounting assembly comprises: a third part mounted on the body and a fourth part mounted on the second end of the handle, one part comprising a support, the other part comprising a pin located in the support which is capable of being rotated in the support to enable the second end of the handle to rotate relative to the housing and to move linearly in the support to enable the second end of the handle to move linearly relative to the housing; characterized in that the support comprises a passage in which the pin is located, the pin being capable of freely moving within the passage either rotationally to enable the second end of the handle to rotate relative to the housing or linearly to enable the second end of the handle to move linearly relative to the housing. | 02-09-2012 |
20120012353 | SIDE HANDLE - A side handle for a power tool comprising: a central bar; a tubular grip which is mounted on and surrounds the central bar via a vibration dampener; the vibration dampener comprising a spring having a central plate, which is mounted in a non moveable manner on the central bar, and a plurality of resiliently deformable arms attached to the plate and which extend away from the plate towards the grip, the ends of each of the arms being non moveably attached to the grip. | 01-19-2012 |
20110254472 | POWER TOOL HAVING A NON-LINEAR TRIGGER-SPEED PROFILE - A power tool including a motor, an input unit such as a variable-speed trigger switch, and a controller is provided. The controller controls the speed of the motor as a function of the input level indicated by the electrical signal from the input unit. The function is a first expression within a first predetermined range of the input level and a second expression within a second predetermined range of the input level, where the second expression corresponds to a polynomial of a second degree or higher and is different from the first expression | 10-20-2011 |
20110142561 | DUST EXTRACTOR - A suction cup dust extractor for a drill having a housing; a drill collar attached to the housing, having a drill passage formed through it; an aperture located on the housing through which air can be sucked out by a suction device; a recess formed by the walls of the housing having an opening which, in use, locates against a work piece to create a chamber; at least one first air passage formed within the housing which enables air to pass from the drill passage to the aperture; at least one second air passage formed within the housing which enables air to pass from the recess to the aperture; and a manually operable valve mechanism mounted in the housing which is connected to the recess and which, when operated, allows air surrounding the housing to freely enter the recess when its opening is located against a work piece; characterized in that the housing further comprises a hand grip), the valve mechanism being mounted, at least in part, inside of the hand grip. | 06-16-2011 |
20110142560 | DUST EXTRACTOR - A suction cup dust extractor for a drill having a housing; a drill collar attached to the housing, having a drill passage formed through it; a recess formed by the walls of the housing having an opening and which, in use, locates against a work piece to create a chamber; a single aperture located on the housing through which air can pass; at least one first air passage formed by the walls of the housing which connects between the drill and the aperture to enable air to pass from the drill passage to the aperture; and at least one second air passage formed within the housing which connects between the recess and the at least one first air passage and which enables air to pass from the recess to the aperture via a part of the at least one first air passage; characterized in that there is a dividing wall which forms both one of the walls of the recess and one of the walls of the first passage, the at least one second passage being an aperture formed through that wall. | 06-16-2011 |
20110142559 | DUST EXTRACTOR - A suction cup dust extractor for a drill comprising: a housing; a drill collar attached to the housing, having a drill passage formed through it; a recess formed by the walls of the housing having an opening and which, in use, locates against a work piece to create a chamber; an single aperture located on the housing through which air can pass; at least one first air passage formed within the housing which enables air to pass from the drill passage to the aperture; and at least one second air passage formed within the housing which enables air to pass from the recess and the aperture; characterized in that the drill collar comprises a plurality of markers which are located around its periphery | 06-16-2011 |
20110142558 | DUST EXTRACTOR - A suction cup dust extractor for a drill having a housing with a drill collar attached to the housing and having a drill passage formed through the housing. A recess formed by the walls of the housing has a planar opening and a seal is attached to the walls of the recess which surrounds the planar opening and which, in use, locates against a work piece to create an air tight seal between the housing and the work piece. The housing also has an aperture located thereon through which air can pass; at least one first air passage formed within the housing which enables air to pass from the drill passage to the aperture; and at least one second air passage formed within the housing which enables air to pass from the recess to the aperture; characterized in that the seal comprises a base which is attached to the walls of the recess and a flange which is attached to and extends from the base at an oblique angle to the plane of the opening. | 06-16-2011 |
20110142557 | DUST EXTRACTOR - A suction cup dust extractor for a drill having a housing; a drill collar attached to the housing, having a drill passage formed through it; a recess formed by the walls of the housing having an opening which, in use, locates against a work piece to create a chamber; a single aperture located on the housing through which air can pass; at least one first air passage formed within the housing which connects between the aperture and the drill passage and which enables air to pass from the drill passage to the aperture; and at least one second air passage formed within the housing which connects between the recess and the at least one first air passage inside of the housing which enables air to pass from the recess the aperture wherein there is further provided a connection collar which is connected to the aperture via a flexible tube only; wherein the aperture has a longitudinal axis, and the drill collar has a longitudinal axis, the longitudinal axis of the aperture being orientated substantially perpendicularly to the longitudinal axis of the drill collar. | 06-16-2011 |
20110131819 | BLADE CLAMP FOR RECIPROCATING SAW - A jigsaw drive shaft is connected to a blade by the blade clamp of the present invention. The blade clamp comprises a clamp body mounted securely to the drive shaft by a bracket. The clamp body has a hollow portion formed to receive an upper portion the jigsaw blade. The clamp body also includes a hollow tubular extension. A cam body is pivotable about an axis through a cylindrical bore such that cam surfaces move in and out of contact with an interior surface of the clamp body to engage or release the blade. A spring biases the cam body into engagement with the clamp body surface. The user must press on a protrusion of the cam body to pivot the cam surfaces way from the clamp surface and against the force of the spring. | 06-09-2011 |
20110127056 | HAMMER DRILL - A hammer drill comprising: a body | 06-02-2011 |
20110024144 | VIBRATION DAMPENING SYSTEM FOR A POWER TOOL AND IN PARTICULAR FOR A POWERED HAMMER - The present invention relates to a method for controlling a power tool comprising a housing, an electric motor, a tool holder for supporting a tool bit and a conversion mechanism for converting the rotational movement of the output shaft of the motor into a reciprocating movement of the tool bit when being supporting in the tool holder, wherein oscillations of an element of the power tool are detected, wherein a quantity characterizing the oscillations is monitored and wherein the rotational speed of the electric motor is controlled such that the quantity does not exceed a preset value. | 02-03-2011 |
20110011607 | MOTOR DRIVEN HAMMER HAVING MEANS FOR CONTROLLING THE POWER OF IMPACT - A motor driven hammer is described comprising a housing ( | 01-20-2011 |
20100282483 | ACTUATION APPARATUS FOR POWER TOOL - When the mode change knob of a multi-mode hammer drill is moved to the hammer only position, an electronic sensor sends a signal to a control logic circuit. When the user then depresses the trigger mechanically closing the ON/OFF switch, the control logic circuit applies a voltage either to a holding relay or to the gate of a triac which enables the relay or triac to conduct, thus providing a parallel circuit by-passing the ON/OFF switch. Consequently, when the user releases the trigger and opens the ON/OFF switch, the parallel relay or triac maintains current flow to the motor. It can be seen that in hammer only mode the user can activate the hammer drill by simply tapping the trigger to depress it and does not need to hold down trigger during use of the hammer in operation. | 11-11-2010 |
20100269625 | VIBRATION DAMPENING HANDLE FOR A POWERED APPARATUS - A vibration dampening handle for a powered apparatus includes an elongate gripping member including a first end, a second end opposite the first end, a longitudinal axis extending through the first end and the second end, and a wall defining an inner bore and having an inner surface. The inner bore extends along the longitudinal axis at least partially through the gripping member, and opens on at least the first end of the gripping member. A weighted mass is disposed at the second end of the gripping member. An elongate elastic beam member is one of attached to and integral with the gripping member. The beam member extends along a region of the longitudinal axis and a portion of the beam member is disposed within the inner bore and is spaced apart from the inner surface. The beam member further includes a first end that extends beyond the first end of the gripping member and includes a fastening member adapted to connect the handle to the powered apparatus | 10-28-2010 |
20100209207 | ROUTER - A bit retaining system for a rotary tool or device such as a router is disclosed. The bit retaining system may include a collet assembly and a control assembly. The collet assembly may include a spindle, a collet adapted to receive the bit, and a collet nut. The collet assembly may further include a collet gear mounted on the collet nut and/or a spindle gear mounted on the spindle. The control assembly selectively engages the collet assembly to drive the collet nut and/or secure the spindle in a fixed position, preventing its rotation. In operation, a hand tool is utilized to engage the control assembly. This configuration enables a user to capture and release the rotary tool bit using one hand. | 08-19-2010 |
20100146798 | POWER CUTTER - A power cutter including a housing; a two stroke internal combustion engine mounted within the housing; a throttle switch by which the engine can be accelerated when the engine is running; a support arm mounted on the housing and which projects forward of the housing. A blade mounting mechanism is rotatably mounted on the end of the support arm and is capable of being rotationally driven by the engine when the engine is running. A carburetor provides aerated fuel for the engine and an air intake provides air for the carburetor. An air filtration mechanism filters the air drawn in from the air intake for the carburetor. A fuel tank provides fuel to the carburetor. An exhaust is provided through which the exhaust gases generated by the operation of the engine are expelled from the engine. The power cutter also includes an engine controller that controls the operation of the engine; an oil tank that provides lubricating oil for the engine; an oil pump that pumps lubricating oil from the oil tank to mix it with fuel; and a sensing system that determines whether sufficient lubricating oil is being provided for mixing with the fuel in accordance with predetermined parameters. The sensing system provides an indication to the engine controller of when the lubricating oil is not being provided in accordance with the predetermined parameters. When the sensing system indicates that the lubricating oil is not being provided in accordance with the predetermined parameters, the engine controller places the engine either in an idle mode or switches it off. | 06-17-2010 |
20100012339 | HANDLE DAMPING SYSTEM - A power tool, particularly a hammer drill, comprising; a body ( | 01-21-2010 |
20090236113 | POWERED HAMMER WITH A VIBRATION DAMPENING MECHANISM - A powered hammer is described comprising a housing, a tool holder mounted on the housing, a percussion mechanism arranged within the housing which mechanism includes a ram reciprocating in a longitudinal direction and being adapted to apply impacts on a tool bit supported in the tool holder, a dampening mass which is slidably mounted in the longitudinal direction within the housing, wherein the dampening mass is biased towards a neutral position by a biasing element and wherein the dampening mass may be deflected from the neutral position against the biasing force of the biasing element. The dampening mass is formed of a ferromagnetic or paramagnetic material or comprises a permanent magnet and a solenoid is arranged within housing adjacent to the dampening mass such that the solenoid applies a force in the longitudinal direction on the dampening mass when being in the neutral position if a current is flowing through the solenoid. | 09-24-2009 |
20090236112 | HAMMER - A hammer comprising: a body; a tool holder mounted on the body for holding a cutting tool; a handle, comprising a grip portion, pivotally mounted on the body about an axis of pivot; a first vibration dampener which connects between the handle and the body and which reduces the amount of angular vibrations transmitted from the body to the handle; a motor mounted within the body; a hammer mechanism mounted in the body, capable of being driven by the motor when the motor is activated, the hammer mechanism, when driven, imparting impacts onto a cutting tool when held by the tool holder; wherein at least the grip portion of the handle is also slideably mounted on the body so that the position of the grip portion can be linearly moved relative to the body; and there is further provided a second vibration dampener located between the grip portion and the body which reduces the amount of linear vibrations transmitted from the body to the grip portion. | 09-24-2009 |
20090236111 | HAMMER - A hammer comprising: a body; a tool holder mounted on the body for holding a cutting tool; a handle pivotally mounted on the body about an axis; a vibration dampener which connects between the handle and the body and which reduces the amount of angular vibrations transmitted from the body to the handle; a motor mounted within the body; a hammer mechanism mounted in the body, capable of being driven by the motor when the motor is activated, the hammer mechanism, when driven, imparting impacts onto a cutting tool | 09-24-2009 |
20090218973 | CONTROL OF SWITCHED RELUCTANCE MACHINES - A flux switching electric motor ( | 09-03-2009 |
20090188692 | MOUNTING ASSEMBLY FOR HANDLE FOR POWER TOOL - A mounting assembly for moveably mounting a handle of a power tool to a housing of the power tool is disclosed. The mounting assembly has a metal bar ( | 07-30-2009 |
20090188691 | HANDLE ASSEMBLY FOR POWER TOOL - A handle assembly for a power tool is disclosed. The handle assembly has a handle ( | 07-30-2009 |
20090188689 | HAMMER DRILL - A hammer drill having an outer housing defining a handle is disclosed. The tool includes transmission housing including a drive mechanism and a motor, wherein the transmission housing is moveably mounted in the outer housing by means of arms for movement relative to the outer housing along a non-linear path between a first position, corresponding to no force being applied by a user to the outer housing of the tool, and a second position, corresponding to the user applying a force to the outer housing when the working member of the tool engages a workpiece. Springs bias the transmission housing towards the first position. The direction of travel of the drive mechanism relative to the outer housing at a particular point on the non-linear path is arranged to coincide with the direction of the dominant vibration occurring in the drive mechanism relative to the outer housing when a particular force is applied to the outer housing to move the drive mechanism relative to the outer housing to that point on the non-linear path against the biasing force of the biasing means. | 07-30-2009 |
20090188688 | CONTROL MECHANISM FOR A POWER TOOL - A speed adjustment mechanism for a power tool is disclosed. The mechanism includes a support, a first toothed gear for rotation by means of an adjustment dial, and a second toothed gear rotatable by means of the first toothed gear and connected to a potentiometer which is connected to a speed control circuit. Limited movement of the first and second toothed gears relative to each other is possible to reduce transmission of impacts from the adjustment dial to the speed control circuit. | 07-30-2009 |
20090188083 | HANDLE FOR POWER TOOL - A handle housing for a handle for a power tool, the handle housing having a first housing part; and a second housing part adapted to be mounted to the first housing part and subjected to a bending stress when mounted to said first housing part, the said first and second housing parts defining a chamber for accommodating one or more components of the power tool. | 07-30-2009 |
20090021090 | Power Tools With Motor Having a Multi-Piece Stator - A power tool has a motor having a stator made by separately forming pole pieces, return path pieces and field coils. The field coils are placed over necks of the pole path pieces and the return path pieces are affixed to the pole pieces. An armature having an outside diameter of at least 0.625 the outside diameter of the stator is placed in the stator. The field coils may be formed so that they extend beyond pole tips of the pole pieces. | 01-22-2009 |
20090019710 | POWER CUTTER - A power cutter comprising: a housing | 01-22-2009 |
20090007440 | POWER CUTTER - A power cutter comprising: a housing | 01-08-2009 |
20090007435 | POWER CUTTER - A power cutter comprising: a housing | 01-08-2009 |