Abstract: The present invention is based on a hand-held power tool with a housing (12), an oscillating body (18) provided for oscillation relative to the housing (12), and connecting means (22) which fasten the oscillating body (18) to the housing (12). It is provided that the connecting means (22) include a receiving part (26) which can be installed in the housing (12) and an oscillating element (28) which is separate from the receiving part (26) and is provided for deformation.

Abstract: A hand-held power tool, in particular a sander, includes a housing (10) and a motor (12) located in the housing (10). A driven shaft (16) that extends from a face end (14) of the housing (10) is drivable by the motor (12). A suction conduit (18) extends at least partway through the housing (10). The suction conduit (18) opens as an intake at the face end (14) of the housing (10).

Abstract: A motor is disposed in a main body and has a rotary shaft. A base is disposed below the main body. The base is coupled to the rotary shaft and adapted to make eccentric motions in accordance with rotations of the rotary shaft. A first receptacle is disposed in the main body. A second receptacle is disposed in the base. A foot is disposed between the first receptacle and the second receptacle. The foot includes a foot body made of metal, and elastic members provided on both ends of the foot body and respectively fitted into the first receptacle and the second receptacle, so that the foot body is pivotably supported between the first receptacle and the second receptacle. An elastic sleeve is fitted onto a part of an outer periphery of the foot body while being compressed by the first receptacle and the second receptacle.

Abstract: The present invention provides a grinding member or connection to a drive connection member to form a grinding cup for grinding the hard metal inserts or working tips of drill bits (percussive or rotary), tunnel boring machine cutters (TBM) and raised bore machine cutters (RBM) to restore them to substantially their original profile, said grinding member having: a. a grinding section having top and bottom surfaces, a centrally disposed convex recess formed in the bottom surface of said grinding section having the desired profile to be ground; b. a support section adjacent the top surface of said grinding section; c. means to connect the grinding member to the drive connection member wherein the grinding member can be disconnected from the drive connection member when it becomes worn.

Abstract: A manually guided implement having a tool driven by an internal combustion engine, which draws combustion air in via an air filter disposed on an air filter base. The air filter is secured to the implement via a releasable securement device that includes a first securement element, and a second securement element that cooperates with the first securement element. The securement elements can be released from one another, or connected to one another, by means of a rotational movement about an axis of rotation. To achieve easy handling of the air filter, the first securement element is fixedly connected to the air filter.

Abstract: A sharpening device operable to maintain a stable angle of a cutting edge during sharpening is disclosed. A sharpening member reciprocates parallel to a first direction. The sharpening member comprises a sharpening surface comprising at least one groove along the first direction. Reciprocation can reduce a presence of a sharpening residue on the sharpening surface while maintaining a stable sharpening angle of a cutting edge.

Abstract: The invention relates to a hand machine tool comprising a first housing shell (12, 150, 162), a second housing shell (16, 156, 168) different from the first housing shell (12, 150, 162) and being connected to the first housing shell (12, 150, 162) via a damping element (58, 60, 122, 132, 158, 170, 172), and a handle section (14, 152, 164) arranged on one of the housing shells (12, 150, 162). The invention is characterized in that the first housing shell (12, 150, 15 162) at least partially encloses the second housing shell (16, 156, 168).

Abstract: The invention discloses a tool for grinding and polishing, comprising a drive motor, which has a given machine power (rated input power) and by which a work spindle can be driven about its longitudinal axis in rotatingly oscillating fashion, and further comprising a tool-mounting fixture on the work spindle intended to receive a tool that has a working surface for grinding and polishing operations. The quotient of the working surface (in square millimeters) and the rated power input (in Watts) is at least 35 mm2/W, while the quotient of the working surface and the deadweight (in grams, without the tool) is at least 5.5 mm2/g.

Abstract: The invention is based on a hand-guided sander having a housing (12) whose size is essentially limited to that of a base (38) of a sanding plate (30). According to the invention, the housing (12) is equipped to accommodate a rechargeable battery unit (28). The invention also relates to a sander cradle and a sander housing.

Abstract: The invention emanates from a hand-held grinder, in particular an orbital grinder, with at least one handle (10) in or on a housing part (19) and with a drive unit (12) to drive a grinding disc (14) in or on a disc-shaped tool carrier (13) in a housing (11), wherein the grinding disc (14) is on a grinding disc plane (16) and the direction of force (17) is perpendicular to the plane (16) of the grinding disc. The invention proposes that the handle (10) is connected to the housing (11) through at least one vibration decoupling element (18, 71). The invention also relates to a vibration decoupling device of a hand-held grinder.

Abstract: A removable head assembly for a combination rotary, including: a body; a rotatable element connected to the body and including an indentation or protrusion for fixing a pad assembly to the rotatable element; and a locking assembly including first and second elements. The body is connectable to a combination rotary tool and is rotatable about a first axis; the rotatable element is rotatable about a second axis; the indentation or protrusion is aligned with a third axis substantially parallel to the second axis; and the first element is displaceable to displace the second element to rotationally fix the rotatable element with respect to the body so that the first and third axes are co-linear, and the second axis is out of alignment with the first and third axes.

Abstract: A tool for moving an abrasive media. The tool includes a tool body, a platen, a drive system and a retaining knob. The platen has an exterior platen surface and a knob aperture that is formed through the exterior platen surface. The drive system is housed in the tool body and configured to move the platen. The drive system includes an output member with a first threaded portion. The retaining knob is received through the knob aperture in the exterior platen surface of the platen. The retaining knob has a knob portion, which has an exterior surface, and an attachment member with a second threaded portion that is threadably coupled to the first threaded portion. The platen surface and at least a portion of the knob surface are co-planar. A related method is also provided.

Abstract: An electric sanding machine has a housing with a drive device disposed therein, a base plate disposed under the housing, and a driven shaft for driving the base plate. A sanding device is attached to the base plate. The housing has a drive device housing part substantially perpendicular to the base plate and a grip housing part substantially parallel to the base plate. A cross section of the housing in a vertical direction is substantially L-shaped. The drive device is disposed in the drive device housing part while the driven shaft is located in the grip housing part so that the drive device is departed from the driven shaft in a radius direction of the driven shaft. With this arrangement, the sanding machine is provided with stronger power and has a smaller contour size which may be controlled more effectively.

Abstract: The invention relates to an arrangement in a mobile machine for screeding floor surfaces. This comprises a housing with a planet disk (3), which is rotatably supported in the bottom of the said housing and driven by a drive motor (1). The planet disk carries a number of rotatably supported screeding disks, distributed over the planet disk (3) and operatively connected to the drive motor (1). According to the invention the number of screeding disks is an even number up to a maximum of six. Viewed in the direction of rotation of the planet disk (3), half the number of screeding disks have a direction of rotation coinciding with the planet disk (3) and the remaining screeding disks an opposing direction of rotation.

Abstract: A sander can include a housing, an indicator disposed on the housing, and a motor assembly in the housing. The motor assembly can include an output member. A platen can be driven by the output member. A sensor assembly can be configured to sense a condition in which a pressing force in excess of a predetermined force is applied to the sander in a direction normal to the platen and generate a sensor signal in response thereto. A controller can receive the sensor signal from the sensor assembly and control operation of the indicator in response thereto. The sensor assembly can include a force sensing resistor. The force sensing resistor can be disposed adjacent to a gripping portion of the power sanding tool. The indicator can include at least one light source. The controller can illuminate the light source according to a schedule.

Abstract: A head assembly for a rotary tool, comprising a body arranged for connection to a drive means, the drive means rotatable about a first axis of rotation; a rotatable element arranged for connection to a pad assembly, the rotatable element rotatable about a second axis of rotation disposed substantially parallel to the first axis of rotation; and, a locking assembly arranged to lock the rotatable element to the body to prevent rotation of the rotatable element relative to the body about the second axis of rotation.

Abstract: A lever longer than wide and bent across its length producing an angle of <180° between an upper surface of a longer first and a shorter second lever end to control the throttle switch of a hand-held tool by hand-rocking the lever about its vertex to exert pressure on or release pressure from the switch, the lever designed to support a user's fingers and palm while using the tool. Attachment tabs extend downwards from opposing sides of the first end adjacent the vertex, each tab having an aperture for accepting an attachment pin so to pivotally engage the lever within pin receiving apertures of the tool to rotate the lever both toward and away from the actuator switch, the second end extending over an exhaust-outlet or air-intake of the hand-held power tool to protect the user's hand from coming into contact with the tool's exhaust-outlet or air-intake.

Abstract: A sander according to the present invention having a housing, a motor mounted in the housing, wherein the housing comprises an upper housing section and a lower housing section, the upper housing section includes an inner surface, the lower housing section includes a motor housing, the lower housing section at least partially overlapped by the upper housing section, and a grip portion formed on the upper housing section. The upper housing section is connected with the lower housing section through a damping means including at least a damping element positioned on the inner surface the upper housing section and on the periphery of the motor housing section, the damping element engaged with engagement member. The arrangement of the damping means simplifies the connection between the upper and lower housing sections, while effectively reducing the vibrations in the horizontal and vertical directions when the sander is in use.

Abstract: An eccentric grinder has a drive which is arranged in a housing and the drive shaft of which drives a supporting shaft of a back-up pad by way of an eccentric mounting. Also provided is a friction braking device, which comprises a friction braking element on the housing and a friction surface on the back-up pad. The friction surface slopes down in the radial direction from the inside to the outside with respect to a horizontal plane that is perpendicular to the axis of rotation of the back-up pad.

Abstract: An electric polishing gun has a body, a rechargeable battery, a drive motor, a transmitting device and an actuating device. The body has a battery seat, a handle section, a circuit board, a switch, a trigger and a holding cap. The rechargeable battery is attached detachably to the battery seat of the body to supply electric power to the electric polishing gun. The drive motor is mounted in the body, is electrically connected to switch, the trigger and the rechargeable battery and has a rotating shaft and multiple engaging teeth. The transmitting device is connected to the drive motor, is mounted in the holding cap and has a bevel gear and a mounting bracket. The actuating device is connected detachably to the transmitting device and has a cover, a drive shaft, an eccentric segment and an actuating segment.

Abstract: A motor-driven machine tool (1) with a tool (7) that can be rotatably driven comprises a drive shaft (5) and a driven shaft (6) on which the tool (7) is received, the rotational movement of the drive shaft (5) being transmissible onto the driven shaft (6) via a coupling device (8). The drive shaft and the driven shaft are arranged in parallel, the driven shaft (6) extending at least partially at the level of and parallel to the drive unit.

Abstract: A grinding machine with a length-adjustable dust collecting structure includes a dust collecting structure, and the dust collecting structure includes a dust collecting pipe and a moving element, and the moving element is installed at a front end of the dust collecting pipe for collecting dusts produced after a grinding process, and the moving element can be pushed or retracted from the front end of the dust collecting pipe, such that the displacement of the moving element at the front end of the dust collecting pipe allows the dust collecting pipe to effectively suck the dusts produced during the grinding process.

Abstract: A motor-driven machine tool with a drive shaft and a driven shaft on which the tool is received comprises an eccentric coupling device via which the rotational movement of the drive shaft is transmissible onto the driven shaft. A mass balancer shaft is provided for compensating vibrations. Said mass balancer shaft is operatively connected to at least one of the shafts and carries out a compensating movement counter to the eccentric coupling movement.

Abstract: A power tool has a housing a housing having an electronically commutated motor disposed therein. The motor has a rotor and a stator. The rotor has permanent magnets. The stator has a lamination stack and windings wound therein. Features are provided to provide double insulation.

Abstract: A pneumatic motor includes a cylinder, a rotor and a drive shaft. The cylinder includes a cylinder body having two ends, a first cover and a second cover. The first cover is mounted on one of the ends of the cylinder body and has a first bearing housing, a first bearing and a first blocking ring. The first bearing is mounted in the first bearing housing and has an annular clearance. The first blocking ring is mounted between the first bearing housing and the first bearing and covers the annular clearance of the first bearing. The rotor is mounted rotatably in the cylinder body. The drive shaft is mounted securely through the rotor. When compressed air is expelled from the cylinder body, the compressed air does not blow lubricants out of the first bearing because the first blocking ring closes the annular clearance.

Abstract: Tools providing automatic, smooth shifting between random orbital and rotary motion by simply increasing or decreasing force applied are taught. Exemplar is a finishing tool switchable between grinding rotary action and random orbital sanding action without powering down and without any mechanical manipulation, made possible by having a clutch mechanism affixed directly to the spindle assembly, which also eliminates the need to dissemble the tool in order to change a backup pad, saving time and money. Direct relationship between the clutch and spindle eliminates need for a specialty pad allowing for use of a variety of backup pads, reducing the cost of replacement backup pads and increasing the functionality of the dual-function tool. An additional feature is that the drive head surface is circular and large enough to encompass the device's circular clutch plate, which means that the available friction surface area of the clutch plate is efficiently utilized.

Abstract: A reduced height quarter sheet sander has a housing having first and second halves mated together. An upper portion of the housing provides a handle. An electric motor is disposed in the housing. The electric motor has a stator and an armature. The stator has field coils and the armature has an armature shaft on which a commutator is affixed. A pair of brush boxes is disposed in the housing on opposite sides of the commutator. The brush boxes lie in a horizontal elevation when the sander is upright. An orbit mechanism is coupled to the armature shaft and a platen is coupled to the orbit mechanism. In an aspect, a switch disposed in the handle of the housing and a terminal block (at which a cordset that enters the housing terminates) disposed in the handle of the housing have generally the same horizontal elevation as the brush boxes (when the sander is upright).

Abstract: A head assembly for a rotary tool, comprising a body arranged for connection to a drive means, the drive means rotatable about a first axis of rotation; a rotatable element arranged for connection to a pad assembly, the rotatable element rotatable about a second axis of rotation disposed substantially parallel to the first axis of rotation; and, a locking assembly arranged to lock the rotatable element to the body to prevent rotation of the rotatable element relative to the body about the second axis of rotation.

Abstract: A planetary grinding machine having a simple design with a minimal number of parts, which are all easily accessible for maintenance and repair is disclosed. The machine has a rotating planetary disk with rotating screeding disks attached. The planetary disk is driven by a shaft extending through a top housing cover plate, which supports a transmission driven by a motor. As the planetary disk rotates, a single belt engages a stationary gear on the cover plate and pulleys on screeding disk shafts to turn the screeding disks as the planetary disk is turned. The belts and pulleys for the drive mechanism are sandwiched between the planetary disk and the top cover to protect the mechanisms from dust and debris. The bearings are sealed to prevent dust and debris from entering and oil from escaping. The bearings, being on the inside of the planetary disk, keep oil from landing on the floor.

Abstract: An elongated liquid polish dispenser which can be longitudinally attached to a hand-held rotary buffer such that a thumb switch to operate the dispenser is placed opposite a trigger on the buffer's handle is described. The dispenser can be firmly attached by a built-in strap to several popular models of professional heavy duty polishers without obscuring vent holes of those models. The thumb switch activates an electric pump which pumps liquid polish through a nozzle and onto a work surface.

Abstract: The present invention relates to an eccentric stroke adjusting mechanism for use in a power tool with a principle drive shaft comprising a first and a second eccentric member mounted on the principle drive shaft respectively and a coupling member for connecting the first and the second eccentric member. The principle drive shaft has a central axis. The first eccentric member has a first central axis and the second eccentric member has a second central axis. The eccentric stroke of the first central axis and the second central axis with respect to a central axis of the principle drive shaft is adjustable. The eccentric stroke adjusting mechanism of the invention is reliable and the adjusted eccentricity is non-displaceable. The eccentric stroke adjusting mechanism can be applied to adjust the eccentric stroke of single disk or multiple (e.g., double) disks.

Abstract: A power tool having an eccentric mass for sanding a work surface is provided. The power tool may include a motor assembly, a sanding shaft, an eccentric mass, a base element, a fan shaft, a fan, a filter element and one or more dust channels. The motor assembly may be perpendicular to the sanding shaft for reducing the height of the power tool and reduce vibrations transmitted to the operator during use. The fan may be configured to create a suction force that is guided at least partially through the dust channels for evacuating at least some of the particulate matter creating during sanding operations and the filter element may be configured to capture at least some of the particulate matter for providing at least some protection to the operator and the fan. The fan may be position opposite the motor assembly from the sanding shaft.

Abstract: An apparatus is provided for shaping an end of an optical fiber. The apparatus may include a frame and a clamp constructed to hold the optical fiber in a fixed location relative to the frame. The apparatus may further include a tip shaper supported by the frame and movable in a first direction toward and away from the clamp, and moveable in a second direction that lies in a plane transverse to the first direction to shape the end of the optical fiber when the tip shaper is placed in contact with the optical fiber. The apparatus may include an abrasive substrate which abrades the end of the fiber.

Abstract: There is also provided a dust extraction module for use with a power tool, the dust extraction module having: a dust collection chamber (50) having an inlet (52) connectable in fluid communication with an outlet (44) of a dust-extracting duct (40) of the power tool, and having an outlet (54) in fluid communication with atmospheric air; and a filter (60) locatable in fluid flow between the outlet of the dust collection chamber and the atmospheric air; wherein the dust collection chamber (50) has a substantially circular cross section, the inlet (52) to the dust collection chamber is at the perimeter of the circle and the outlet (54) of the dust collection chamber is from the middle of the circle.

Abstract: A fiber optic polishing apparatus is disclosed including a single degree-of-freedom (DOF) gear transmission system, a pressurizing module, a fixture module, and a housing assembly motorized polisher. The single DOF gear transmission system would enable a fiber optic polishing machine, or polisher to be driven by only one motor, or by human hand. The manual polisher is a unique field polishing machine where electricity or battery is not available or not allowed. Both manual polisher and motorized polisher have the following features: polishing up to four connectors or ferrules simultaneously; adjustable force ensures consistent finish for a wide variety of connector types and the number of connectors in the fixture; quick release for convenient removal of polish fixture; low center of gravity for high stability; small footprint for multiple-machine operation to avoid time-consuming film change.

Abstract: A sander can include a housing, an indicator coupled to the housing, and a motor assembly in the housing. The motor assembly can include an output member. A platen can be driven by the output member. A DC generator can be driven by the output member. The DC generator can generate an output signal with a voltage that is related to a rotational speed of the motor. A controller can operate the visual indicator based on the voltage of the output signal. According to additional features, the DC generator can provide electrical power to operate the indicator. An electric power input can be electrically coupled to the motor. The visual indicator can be electrically isolated from the electric power input.

Abstract: A metering assembly includes a fluidic chip and metering chambers. Selectable outlet valves communicate with each metering chamber to provide a discrete dispensed volume. The valves may be commonly controlled and may be formed as multi-level valves. The valves may be grouped into common substrate valve clusters. Purge channels communicate with the metering chambers and controlled purge valves allow reverse flow wash fluid to wash the metering chamber. Pressure ports are employed to actuate the valves. A method of dispensing a fluid from the fluidic chip includes a) selectively filling (or filling) the metering chambers with a selected fluid; and b) outputting (or selectively outputting) the fluid to output locations. The total output volume of fluid dispensed from each metering chamber may be accumulated. The process may be repeated until the accumulated volume equals the desired volume and may be repeated for another fluid from a plurality of different fluids.

Abstract: A sander can include housing, and a motor assembly in the housing. The motor assembly can include an output member. A platen can be driven by the output member. A user feedback assembly can be coupled to the housing and have a sensor assembly, a controller and an indicator. The sensor assembly can be configured to sense a parameter that is related to a magnitude of a force transmitted between the platen and a workpiece and generate a signal in response thereto. The controller can receive the sensor signal from the sensor assembly and control operation of the indicator in response thereto.

Abstract: An improved dust collector for a power tool is employed. The dust collector includes a body portion, a neck portion and a head portion, wherein the body portion is disposable on the power tool so that during the cutting operation the body portion will receive and direct the air, dust, and debris to the head portion via the neck portion to either be exhausted out or to be collected in a dust collection volume. Preferably, the body portion has a series of openings to allow the user to view the cutting wheel during the cutting operation. The body portion may also have an internal directional member for efficiently directing the flow of air, dust, and debris. The head portion is preferably rotatably connected to the neck portion to allow the user to rotate the head portion to a desired position.

Abstract: A handheld material conditioner including at least three orbital head assemblies. The handheld material conditioner including a motor, where the motor is connected to the at least three orbital head assemblies. The handheld material conditioner including a housing to house the motor. The housing having at least one handle and having an on/off device to send power to the motor. The handheld material conditioner including a base to which the at least three orbital head assemblies are attached. The base having a top, bottom and at least one side extending down from the base. The handheld material conditioner including a conditioning pad attached to each of the at least three orbital head assemblies.

Abstract: A power tool includes a tool body, and the tool body is subject to vibration during operation of the power tool. The power tool also includes a handle adapted to be grasped by an operator of the power tool for controlling the motion of the power tool, and at least one coupling member, where each coupling member includes a first end coupled to the tool body and a second end coupled to the handle and a longitudinal axis between the first end and the second end.

Abstract: Portable sander, in particular an orbital sander, having an abrasive sheet carrier (1) and having clamping means (3) for firmly clamping opposite abrasive sheet ends of an abrasive sheet (21) which can be supported on the abrasive sheet carrier (1), wherein first clamping means (3) together with an abrasive sheet end clamped thereon can be moved away from the other abrasive sheet end, clamped by means of second clamping means (3), for tensioning the abrasive sheet (21), and the first clamping means (3) have spring elasticity. Provision is made for the first clamping means (3) to come against a rigid stop element (9) with prestress in an end clamping position.

Abstract: A pneumatic abrading or polishing tool is provided that includes a motor having a rotor, a motor housing, a carrier part having a shaft and a key extending from the shaft, and an abrading or polishing head attached to the carrier part. The motor housing contains a progressive exhaust passage including a preliminary portion that relieves at least some of the air pressure inside the motor before the exhaust passage fully opens.

Abstract: An improved turbine for vacuum driven tools provides higher speed and power output while reducing problems such as the clogging and stopping of the turbine due to dust and debris. The turbine has a closed bottom and open sides and top, and draws air in through the sides and out through the top of the turbine.

Abstract: A floor treating machine has a frame and a housing connected rotatably to the frame according to a main rotation axis. At least three heads are suspended rotatably with respect to the housing according to respective rotating axes, which are generally parallel to the main rotation axis, as well as a number of drive motors which is at least equal to the number of heads. Each head is connected to its own respective drive motor.

Abstract: A hand held orbital sander has a housing having an electronically commutated motor disposed therein and an orbit mechanism disposed beneath the housing. A motor controller is coupled to the motor. The motor controller changes the speed of at which it runs the motor from an idle speed to a sanding speed upon the motor speed dropping from idle speed to an idle speed threshold value and changes the speed at which it runs the motor from sanding speed to idle speed upon the motor speed increasing from sanding speed to a sanding speed threshold value. The sander may have a mechanical brake that brakes the orbit mechanism and the motor controller also dynamically brakes the motor.

Abstract: An orbital sander liquid dispenser that includes a head with a hollow fluid distribution ring attached thereto that includes a plurality of jet openings formed on its bottom surface design to spray a desired liquid onto the working surface. A liquid is pumped by means of a submerged electric pump to the head and into the ring from a reservoir. An optional foot switch is provided for control the flow of liquid to the head.

Abstract: A power driven abrading or polishing tool is provided that includes a motor having a rotor; a carrier part having a shaft and a key extending from the shaft; and an abrading or polishing head attached to the carrier part. The rotor includes an outer body of a first material and a core of a second material having a resistance to wear greater than the first material. The core includes an inner passage with a keyway which receives the key on the shaft of the carrier part such that a rotation of the rotor is transmitted to the carrier part and the head.

Abstract: A head assembly for a rotary tool, comprising a body arranged for connection to a drive means, the drive means rotatable about a first axis of rotation; a rotatable element arranged for connection to a pad assembly, the rotatable element rotatable about a second axis of rotation disposed substantially parallel to the first axis of rotation; and, a locking assembly arranged to lock the rotatable element to the body to prevent rotation of the rotatable element relative to the body about the second axis of rotation.

Abstract: A powered oscillating hand tool includes a drive unit having an electric motor and a drive shaft; a bearing eccentrically mounted on the drive shaft and located radially eccentrically relative to the drive shaft; a carrier plate mounted on the bearing and a platen for mounting on the carrier plate. The carrier plate is provided with a first engagement means and the platen is provided with second engagement means to engage with the first engagement means by rotation of the platen relative to the carrier plate. The first and second engagement means together comprise a bayonet fitting.