Abstract: Lid separators for vacuum processing chamber lid separation and vacuum processing chambers incorporating same are provided herein. In some embodiments, a lid separator for a vacuum processing chamber includes: a shaft having a first end and an opposing second end, wherein the shaft is threaded along at least a first portion of the shaft; and a contact pad having an outer diameter greater than an outer diameter of the shaft, a recess disposed in a first side of the contact pad, and a central opening disposed through a second side of the contact pad, opposite the first side, and into the recess, wherein the shaft is coupled to the contact pad, wherein the first end of the shaft extends through the central opening and into the recess without reaching the first side of the contact pad, and wherein the first portion and the second end of the shaft extend away from the second side of the contact pad.

Abstract: A power tool includes a grinder, sander or a polisher, which has two working modes. According to an embodiment a dual power tool includes a motor operable in two operational directions, where an operational mode of the dual mode power tool is changeable by changing operational direction of the motor.

Abstract: An accessory includes an attachment member, a fastener, a locking member, and an eccentric member. The attachment member has a central axis, which is perpendicular to a first surface of the attachment member. The fastener is connected to at least the attachment member. The locking member is movable into at least (a) a locked position in which the locking member is engaged with the attachment member such that the attachment member is configured to rotate about the central axis, and (b) an unlocked position in which the locking member is disengaged from the attachment member such that the attachment member is configured to rotate about an eccentric axis. The eccentric axis is offset from the central axis. The eccentric member includes a first slot that receives the locking member, a second slot that receives the driving shaft, and a third slot that receives the fastener. The second slot of the eccentric member is structured to align with the central axis of the attachment member.

Abstract: In an optical emitter device, when point emitters are placed on the focal plane of a lens system, each individual point emitter will point to a specific free space angle depending on the position of the point emitter relative to the longitudinal central axis of the lens system. Point emitters comprising end-fire tapers combined with both a turning mirror and a micro-lens provide improved performance, because, unlike grating couplers, end-fire tapers enable uniform broadband operation with all possible polarization states. A turning mirror may be added to direct the light emission from the end-fire tapers to vertically upwards, which enables both a two-dimensional point emitter array and a more streamlined assembly process.

Abstract: An electric sander motor includes a motor main body (100), a power axial shaft (210) and a sleeve (220). The motor main body (100) includes a rotor (110) and a stator (120) surrounding the rotor (110). The power axial shaft (210) includes an axial hole (211) extending along a central axis of the power axial shaft (210). The sleeve (220) includes one open end and another closed end extended outward to form an eccentric axial shaft (221) penetrating through the axial hole (211). A central axis of the eccentric axial shaft (211) is parallel with a central axis of the sleeve (220) and spaced apart therefrom. The power axial shaft (210) penetrates through the rotor (110), and the sleeve (220) is outside the motor main body (100). The assembly is facilitated by assembling the power axial shaft (210) and the sleeve (220) onto the motor main body (100) sequentially.

Abstract: A work tool includes a spindle, a clamp shaft, a holding member, an engagement member and a first biasing member. The holding member has a pass-through part. The engagement member is rotatable around a driving axis relative to the holding member between a first position in which the engagement member is allowed to pass through the pass-through part and a second position in which the engagement member is engaged with the holding member. The engagement member allows the clamp shaft to move in an up-down direction relative to the holding member when located in the first position, and to prevent the clamp shaft from moving downward relative to the holding member when located in the second position. The holding member is configured to fixedly hold the clamp shaft relative to the spindle while being biased upward by the first biasing member, with the engagement member in the second position.

Abstract: An adjustable stroke mechanism for a random orbital machine including a housing having a wall enclosing a cavity, an adjuster ring surrounding the housing and having a first set of gear teeth along a first portion of an inner surface, and a second set of gear teeth along a second portion of the inner surface, a counterweight having gear teeth on an exterior surface disposed within the housing, and a bearing carriage having gear teeth disposed within the housing. At least one counterweight gear that meshes with the gear teeth of the counterweight and the first set of gear teeth of the adjuster ring, and at least one bearing carriage gear that meshes with the gear teeth of the bearing carriage and the second set of gear teeth of the adjuster ring, so that movement of the adjuster ring causes movement of both the counterweight and the bearing carriage.

Abstract: A rectifier circuit for rectifying an AC voltage supplied from a commercial power supply into a DC voltage, a smoothing capacitor for smoothing the output of the rectifier circuit, and an electrically powered tool for supplying the smoothed pulsating DC voltage to a motor by an inverter circuit, wherein when the motor is driven while no load is being applied to a tip tool, the smoothed DC voltage repeatedly generates a maximal value and a minimum value so as to synchronize with the fluctuation in the AC voltage. During no-load rotation, control is performed so that driving is performed at a value that is less than a threshold value D1 for the duty ratio at which the generation of a gear sound starts in any of the speed dial setting values 1-6. It is thereby possible to suppress a gear sound generated by a power transmission mechanism during no-load rotation.

Abstract: Provided is an electric tool in which the risk of short-circuiting between conductive members of multiple installed switching elements has been reduced by providing partitioning plates between the switching elements. An electric tool, which has a motor, an inverter circuit with multiple switching elements for performing switching operations and controlling the driving of the motor, a control unit for controlling switching element on-off operations, and a circuit board on which the switching elements are loaded, is configured so that the circuit board is housed inside a container-shaped case (40) and the circuit board is secured with a partitioning member (50) that is interposed between the multiple switching elements and has partitioning plates (51, 52a, 52b) obtained from an insulating material.

Abstract: It is an object of the invention to provide a technique for realizing rational arrangement of components considering arrangement of a tool accessory mounting mechanism in a power tool. A representative electric vibration tool 100 is provided which mainly includes a body housing 101, an inner housing 110, a driving motor 115 and a spindle 124. A blade 145 as a tool accessory is held between the spindle 124 and a clamp shaft 127 and driven by the driving motor 115. A rotation axis of the driving motor 115 and the spindle 124 are arranged in parallel to each other. A clamp shaft 127 is held by a clamp member 131 of a clamp shaft holding mechanism 130. The clamp member 131 is arranged within the body housing 101.

Abstract: Provided is a balancing device for a rotating body defining an axis of rotation, including a plurality of balancing heads aligned along the axis of rotation, each balancing head including: balancing masses configured to be moved at least along a circumference of movement so as to cancel the unbalance of the rotating body; at least one motor configured to move the balancing masses independently, the balancing masses part of different balancing heads being mutually spaced along the axis of rotation; unbalance detecting means including a plurality of vibration detectors configured to measure the vibrations caused by the unbalance of the rotating body.

Abstract: A sander is provided and includes a housing, a power supply, a motor, a switch, and a switch actuation mechanism. The housing extends from a proximal end to a distal end and includes a first convex upper surface having a surface area A1. The power supply is coupled to the distal end of the housing. The motor is disposed within the housing and is powered by the power supply to drive an output member. The switch is in electrical communication with the power supply and is operable to selectively power the motor. The switch actuation mechanism is pivotably coupled to the proximal end of the housing and operable to actuate the switch. The switch actuation mechanism includes a second convex upper surface having a surface area A2.

Abstract: A power tool includes a housing, a motor having a motor output shaft and located within the housing, the motor being configured to rotate the motor output shaft about a first axis, a drive component having (i) a body attached to the motor output shaft, and (ii) an output drive pin attached to the body, the output drive pin defining a second axis which is offset from the first axis, the body being caused to rotate about the first axis in response to rotation of the motor output shaft about the first axis, and the output drive pin being caused to be eccentrically driven in response to rotation of the body about the first axis, and further the body having a hub and a counterbalance arrangement attached to the hub, the counterbalance arrangement being positioned and configured to offset forces generated by the output drive pin when eccentrically driven, a linkage configured to oscillate in response to the output drive pin being eccentrically driven, and a tool mount configured to oscillate in response to oscillat

Abstract: A battery-operated hand power tool, in particular an eccentric sander, includes at least one electronically commutated electric motor that acts upon an output shaft and that is configured to drive a working tool. The hand power tool further includes at least one motor housing part that accommodates the electronically commutated electric motor. The electronically commutated electric motor and the output shaft define a common first axis that is coaxial with the output shaft. At least one handle region of the hand power tool accommodates at least one set of electronics configured to energize the electronically commutated electric motor. The motor housing part and the handle region are disposed at an angle to each other. The working tool has a diameter that is between 75 and 150 mm, but preferably is between 115 and 125 mm.

Abstract: A dust-resistant structure for a tooling machine is disclosed. The tooling machine includes a front plate including an accommodation member and a shaft supporter disposed inside the accommodation member. The dust-resistant structure comprises a bridging ring, a dust-resistant rubber ring and a dust-resistant sealing cover. The bridging ring is disposed corresponding to the front plate, and includes a ring body, an inside-ring region corresponding to the accommodation member, and at least one pressure release member formed in the ring body and interconnecting with the inside-ring region for releasing pressure. The dust-resistant rubber ring is assembled to the ring body and disposed in the inside-region region with an inner rim contacting the accommodation member to block dust. The dust-resistant sealing cover includes a cover body assembled to and shielding the accommodation member for blocking dust; and an assembling hole formed in the cover body and penetrated by the dynamic module.

Abstract: A power tool that includes a tool body housing, a drive system, a tool head and a connection system. The drive system is housed in the tool body housing. The tool head, which is configured to perform work on a work piece, includes a tool head housing and an input member that is driven by the drive system when the tool head is coupled to the tool body housing. The tool head can be engaged to the tool body housing in at least two pre-defined and distinct orientations. The connection system secures the tool head to the tool body housing in each of the at least two pre-defined and distinct orientations.

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: An abrasive cutting machine includes a housing and a cutting arm on which a cutting tool is accommodated on the end side. The cutting tool is driven via a belt by an engine of the abrasive cutting machine, and the housing encompasses a fan chamber for accommodating a fan wheel by which an air flow is provided. A belt chamber for accommodating the belt is embodied in the cutting arm, with improved durability of a belt, in particular the dust exposure of the belt for power transfer from the engine to the cutting tool. Provision is made between the fan chamber and the belt chamber for an air duct, through which at least a part of the air flow, which is created by the fan wheel, reaches from the fan chamber into the belt chamber, so as to apply a sealing air flow to the belt chamber.

Abstract: A power-driven hand tool is disclosed, comprising a tool spindle that can be driven in a rotational oscillatory manner about its longitudinal axis and that is designed to carry a tool, and further comprising a transmission housing, in which there is carried an eccentric coupling drive for driving the tool spindle and from which the tool spindle projects outwardly with one end, wherein, for the purpose of mass compensation of the oscillatory motion of the eccentric coupling drive, a compensatory mass is provided, which is disposed outside of the transmission housing.

Abstract: An electric cable cutter used with a hand-held tool includes a housing; a pair of cutting blades supported by the housing; a pair of orthogonal gears; a drive shaft with an eccentric shaft portion attached to an output gear of the pair of orthogonal gears; a differential gear mechanism which decelerates a rotation of the drive shaft; and an Oldham coupling which corrects an eccentric rotation of an output gear of the differential gear mechanism. A circular-arc-shaped outer surface of the one cutting blade is supported by the other cutting blade so as to be openable and closable. The pair of cutting blades is provided with an outer toothed portion engaging with an output gear of the Oldham coupling. An input gear of the pair of orthogonal gears is connected through an adapter pin to the hand-held tool attachable and detachable through a one-touch operation.

Abstract: A waterproof sander comprises a body and a waterproof cover. The body has a housing to hold a drive motor, a drive board driven by the drive motor to proceed a rotational displacement and a sanding disk movable by the drive board and separated from the housing to form a gap between them. The waterproof cover includes a first sealing portion, a mask portion extended from the first sealing portion, and a second sealing portion integrally extended from the mask portion. The first sealing portion is attached to the housing. The mask portion covers the gap. The second sealing portion is located between the drive board and sanding disk to prevent liquid from flowing into the body to provide waterproof effect.

Abstract: A sander may include a housing, a motor, a sanding platen, and a two-piece fan. The motor may be disposed within the housing and may include an output shaft. The sanding platen may be driven by the motor for movement relative to the housing. The fan may be driven by the motor and may include a first piece formed from a first material and a second piece formed from a second material. The first piece may include a disk-shaped body having first and second opposite sides. The first side may include a plurality of first blades extending therefrom. The second side may include a plurality of second blades extending therefrom and a recess formed therein. The second piece may be received in the recess and may include a counterweight boss formed thereon.

Abstract: A portable machine tool, in particular a hand machine tool, has at least one spindle for receiving and for driving a processing tool, at least one brake unit for braking the spindle and/or the processing tool at least in a braking mode, and at least one runoff safety unit for preventing the processing tool from running off of the spindle at least in the braking mode.

Abstract: An eccentric seat of an automobile grinding machine has a base, a grinding device, and a linking-fixing unit. The base has a base hole formed in the base. The grinding device is mounted in the base and has a grinding head. The grinding head has a head hole aligned with the base hole. The linking-fixing unit is mounted in the base hole and can move along the axial direction of the base hole and can be engaged the base. The linking-fixing unit has an inserting end that can be engaged in the head hole. When the inserting end is inserted into the head hole, the grinding head is fixed relative to the base, such that it is easy for the grinding head to combine with a grinding body, and the eccentric seat is suitable for polishing a surface of an automobile.

Abstract: An enclosed polishing apparatus include a housing, a fixing seat, a guiding mechanism, and a chain-driven polishing mechanism. The housing includes a bottom housing and a top housing connected to the bottom housing. The fixing seat is securely placed in the bottom housing. The guiding mechanism is placed in the top housing above the fixing seat. The polishing mechanism is movably mounted on the guiding mechanism above the fixing seat. The polishing mechanism is driven and guided by the guiding mechanism to follow a desired polishing contour on a workpiece.

Abstract: An aero-contouring apparatus is provided. The aero-contouring apparatus has a housing assembly and a motor assembly disposed therein. The motor assembly has a motor unit and a drive unit. The aero-contouring apparatus further has an engagement force/tilt limiting member coupled to the housing assembly, which has a central opening and a bottom end configured to contact a surface to be aero-contoured of an aerodynamically functional coating applied to a structure. The aero-contouring apparatus further has an abrading unit coupled to the drive unit and inserted through the central opening in non-contact communication with the engagement force/tilt limiting member. The abrading unit is driven by the drive unit in a random orbit motion on the surface. The engagement force/tilt limiting member mechanically limits both an engagement force and any tilting motion of the abrading unit with respect to the surface.

Abstract: A battery-operated hand power tool, in particular an eccentric sander, includes at least one electronically commutated electric motor that acts upon an output shaft and that is configured to drive a working tool. The hand power tool further includes at least one motor housing part that accommodates the electronically commutated electric motor. The electronically commutated electric motor and the output shaft define a common first axis that is coaxial with the output shaft. At least one handle region of the hand power tool accommodates at least one set of electronics configured to energize the electronically commutated electric motor. The motor housing part and the handle region are disposed at an angle to each other. The working tool has a diameter that is between 75 and 150 mm, but preferably is between 115 and 125 mm.

Abstract: A waterproof sander comprises a body and a waterproof cover. The body has a housing to hold a drive motor, a drive board driven by the drive motor to proceed a rotational displacement and a sanding disk movable by the drive board and separated from the housing to form a gap between them. The waterproof cover includes a first sealing portion, a mask portion extended from the first sealing portion, and a second sealing portion integrally extended from the mask portion. The first sealing portion is attached to the housing. The mask portion covers the gap. The second sealing portion is located between the drive board and sanding disk to prevent liquid from flowing into the body to provide waterproof effect.

Abstract: The present invention discloses a kind of universal mounting hole means for different tool heads of electric tools, which are disposed on a mounting portion of the tool head, comprising a central hole and a plurality of long and narrow limiting holes which orient radially surrounding the central hole and disposed in distance with each other. Compared with the prior art, the present invention is applicable to various kinds of structures of the mounting seat on electrical tool and is more universal. It takes much convenience to people when changing different tool heads of electric tools, and it is benefit for storing.

Abstract: The present invention particularly relates to a hand-held sanding machine with an outer housing (1), a tool shaft (2) and a brushless electric drive motor. In the present invention, the rotor of the drive motor is fastened to the tool shaft (2) of the sanding machine, and the stator (6) is positioned in the outer housing (1). The present invention also relates to a control method for an electric sanding machine.

Abstract: A handheld machine, comprising a first grip (106) for receiving a first hand of a user of the machine, a second grip (118) for receiving a second hand of the user of the machine, and at least one coupling (114) for connecting the handheld machine to a flexible line (116). The second grip (118) extends in its usage position over the coupling (114) but is displaceable from this position.

Abstract: A clamp arrangement for releasably securing an accessory to an oscillating power tool can include a tool body including a motor that drives an output member. A clamp assembly can include a first clamp member that moves relative to the accessory between a closed position wherein the clamp assembly retains the accessory and an open position wherein the first clamp member of the clamp assembly is offset from the accessory permitting removal of the accessory from the clamp assembly. A lever can have a user engagement portion and a pivot portion including a pivot axle. The lever can be pivotally coupled to the tool body about the pivot axle between a first position, wherein the clamp assembly is in the closed position and a second position wherein movement of the user engagement portion of the lever causes the clamp assembly to be moved to the open position.

Abstract: An oscillating power tool includes a tool head which can be articulated through a range of positions including zero to ninety degrees. The tool head can accept a variety of accessory tools which move in a reversing angular displacement as well as articulate throughout the range of positions.

Abstract: A machine tool clamping device for clamping a laminar machining tool to a tool holder that is eccentrically movably mounted includes at least one clamping unit with at least one movably mounted clamping element. The machine tool clamping device also includes at least one slotted link movement unit configured to move the clamping element in at least one operating state so as to generate tensile stress in the laminar machining tool.

Abstract: A hand-held rotary tool is provided which can offer improved usability while realizing reduction of vibration of a tool body. The rotary tool has a tool body, a drive shaft disposed in the tool body, a driven shaft to which a tool bit is attached, an Oldham's coupling that transmits rotation of the drive shaft to the driven shaft, and an elastic element disposed between the driven shaft and the tool body. The driven shaft is prevented from moving in a longitudinal direction of the driven shaft relative to the tool body and allowed to move in a direction transverse to the longitudinal direction of the driven shaft relative to the tool body. During this relative movement, power transmission from the drive shaft to the driven shaft is maintained via the Oldham's coupling. The elastic element absorbs the movement of the driven shaft relative to the tool body.

Abstract: Orbital surface cleaning apparatus (400) are presented. An orbital surface cleaning apparatus (400) can include a driver motor (410) coupled to a plate (130) having offset distributed weights (133). As the plate (130) rotates, the offset weights (133) cause oscillations of the apparatus (400) cleaning head. A driver motor (410) capable of 80 RPM can induce over 1700 RPM oscillations.

Abstract: A power tool that includes a tool body housing, a drive system, a tool head and a connection system. The drive system is housed in the tool body housing. The tool head, which is configured to perform work on a work piece, includes a tool head housing and an input member that is driven by the drive system when the tool head is coupled to the tool body housing. The tool head can be engaged to the tool body housing in at least two pre-defined and distinct orientations. The connection system secures the tool head to the tool body housing in each of the at least two pre-defined and distinct orientations.

Abstract: A surface treating device includes an open lofty non-woven layer (1) and a woven layer (2). The non-woven layer and woven layer have facing sides (5, 6) which are adhered to each other. A plurality of abrasive segments (3) is adhered to the woven layer on the side (7) of the woven layer (2) which faces away from the non-woven layer (1). Thus, the abrasive segments are held in a stable manner so as to better withstand the frictional forces exerted thereon during service.

Abstract: An eccentric seat of an automobile grinding machine has a base, a grinding device, and a linking-fixing unit. The base has s base hole formed in the base. The grinding device is mounted in the base and has a grinding head. The grinding head has a head hole aligned with the base hole. The linking-fixing unit is mounted in the base hole and can move along the axial direction of the base hole and can be engaged the base. The linking-fixing unit has an inserting end that can be engaged in the head hole. When the inserting end is inserted into the head hole, the grinding head is fixed relative to the base, such that it is easy for the grinding head to combine with a grinding body, and the eccentric seat is suitable for polishing a surface of an automobile.

Abstract: A polishing apparatus is provided for polishing an optical fiber connector. The optical fiber connector includes a connector housing and a ferrule. The polishing apparatus includes a mount to receive and hold the optical connector and a polisher housing supported by a base. The polisher housing houses a polisher that comprises a platen that supports a polishing media, the platen being coupled to a planetary gear system. The mount is disposed on a cover that encloses the polisher housing when the cover is placed in a closed position. A rotatable knob is exposed at an opening of the base, the rotatable knob being engaged with the planetary gear system to move the planetary gear system. The polishing media is disposed proximate to a fiber tip extending from an end face of the ferrule of the optical connector disposed in the mount when the cover is placed in the closed position.

Abstract: The invention concerns a module (100) adapted for use with a hand-held power drill (200) for dual-action abrading, polishing, and/or cleaning of a substrate. The module (100) uses a direct drive mechanism whereby rotation of a suitable work member (204) is actuated along a circular orbital path. The module (100) optionally includes a handle (114) coupled to the module (100), which allows the spindle (110) motion induced by the power drill (200) and the motion of the housing (102) to be effectively decoupled from each other and enhances operator control over the work member (204). Providing a modular device (100) that can be used with a common household tool results in an increased versatility as well as space and cost savings for the consumer.

Abstract: Methods of abrading surfaces by rotationally reciprocating abrasive surfaces in contact with the surfaces, abrasive articles for use in rotationally reciprocating tools, and methods of removing defects in a surface, where the methods include sanding using a rotationally reciprocating abrasive surface followed by one or more polishing operations are disclosed.

Abstract: The invention discloses a portable tool having a housing with a gearhead, having a motor shaft which can be rotationally driven by a motor and which can be coupled via an eccentric coupling drive to a tool spindle for the drive thereof, wherein the tool spindle can be driven in a rotational oscillatory manner about the longitudinal axis thereof and is configured for accommodating a tool, wherein a motion-reversal drive is provided which is configured for converting an oscillating drive movement produced by the eccentric coupling drive into an oscillating output movement which has a direction of oscillation opposed to said drive movement. The motion-reversal drive is configured as an epicyclic gearing.

Abstract: A bidirectional cross airflow machine tool includes a housing chamber to hold a tool spindle and air inlets and air outlets at two sides thereof. The tool spindle is coupled with a balance weight member which includes a first balance weight portion and a second balance weight portion arranged in an up and down fashion so that the tool spindle generates eccentric rotation against the machine tool. The first and second balance weight portions respectively have a first vane set and a second vane set. The first vane set sucks air via the air inlets at one side of the machine tool during rotation of the tool spindle. The air is transmitted from the first vane set to the first and second balance weight portions, and then is discharged via the second vane set through the air outlets at another side of the machine tool to form cross cooling airflow.

Abstract: An adapter is provided for coupling an accessory tool to any of a plurality of power tools wherein each of the plurality of power tools has a distinct tool drive structure. The adapter has body that includes a first side surface, and a second side surface positioned opposite to the first side surface. An inner peripheral surface extends from the first side surface to the second side surface that defines a central opening, and an outer peripheral surface extends from the first side surface to the second side surface. The first side surface has defined therein a plurality of recesses positioned around the central opening. In addition, the body has a first adapter drive structure and a second adapter drive structure. The first adapter drive structure and the second adapter drive structure define the plurality of recesses, and the first adapter drive structure and the second adapter drive structure each possesses a distinct configuration in comparison to each other.

Abstract: A tool for moving an abrasive media can include a tool body and a drive system housed in the tool body. The drive system can include an output member. A retaining member can be disposed on the tool body. A first platen having a first attachment hub can be selectively coupled with the retaining member in an installed position. The first platen can have a first rotatable member that selectively attaches to the output member in a first mode of operation. A second platen having a second attachment hub can selectively couple with the retaining member in an installed position. The second platen can have a second rotatable member that selectively attaches to the output member in a second mode of operation.

Abstract: A first recess and protrusion engagement portion and a second recess and protrusion engagement portion making a fan guide and one end portion of a leg swingably abut on each other and making a base plate and the other end portion of the leg swingably abut on each other, respectively, and restricting a deviation of the leg relative to the fan guide and the base plate in a horizontal direction while allowing swinging of the leg relative to the fan guide and the base are provided between the fan guide and the one end portion and between the base plate and the other end portion, respectively. The leg can swing with almost no resistance without involving any elastic deformation during the orbital motion of the base, and stress to cause elastic deformation is not applied to the leg unlike the conventional art.

Abstract: A system and method for high efficiency floor treating is provided. Embodiments of the floor treating system include a floor treating device with a power source having a rotatable drive shaft with an axis of rotation, a flywheel with an aperture for receiving the drive shaft, a counterbalance connected to the flywheel, and a floor treating attachment located at a distance of at least 0.400 inch from the axis of rotation of the drive shaft. Embodiments of the floor treating method include agitating a cleaning substance using the floor treating device with the floor treating attachment positioned at least 0.400 inch from the axis of rotation of the drive shaft.

Abstract: A power tool including a housing with an electric motor in the housing. The motor has a stator and an armature, the stator having field coils and the armature having an armature shaft on which a commutator is affixed. A pair of brush boxes are located in the housing on opposite sides of the commutator. An orbit mechanism coupled to the armature shaft and a platen is coupled to the orbit mechanism. The field coils comprise a first field coil facing a front of the sander and a second field coil facing a rear of the sander and the brush boxes are rotationally offset from the field coils with respect to a vertical axis of the sander.

Abstract: A tool for moving an abrasive media can include a tool body and a drive system housed in the tool body. The drive system can include an output member. A retaining member can be disposed on the tool body. A first platen having a first attachment hub can be selectively coupled with the retaining member in an installed position. The first platen can have a first rotatable member that selectively attaches to the output member in a first mode of operation. A second platen having a second attachment hub can selectively couple with the retaining member in an installed position. The second platen can have a second rotatable member that selectively attaches to the output member in a second mode of operation.