Abstract: In an automatic wet sanding apparatus including a disc and a cushion pad, a disc center hole is formed at a central portion of the disc and a pad center hole is formed at a central portion of the cushion pad. Water having been supplied to an introduction space inside a skirt is stirred as an eccentric head rotates eccentrically and thereby pushed out toward a painted surface via the disc center hole and the pad center hole with enhanced pressure. Thus, sanding dust resulting from automatic wet sanding can be washed away toward an outer circumferential side by the water that is pushed out toward the outer circumferential side, so that the likelihood of clogging due to sanding dust can be reduced and high sanding efficiency can be maintained.

Abstract: An improved structure of water mill has a body provided with a handle part, a body part, a working head base and a pressing control switch. The handle part is provided with an intake passage, an exhaust passage, and a water inlet reversing passage. By triggering the pressing control switch, a high-pressure gas is guided into the intake passage and the body to drive the water grinder. A water pump gas outlet is provided with a double sleeve tube connected to a sealed water storage tank. The discharged high-pressure gas is guided into the sealed water storage tank through the outer tube of the double sleeve tube, so that the stored water is pressed back to the double sleeve tube and is simultaneously guided into the water inlet reversing passage. Finally, the water is guided out to the working head base, with simultaneous grinding and water cooling.

Abstract: Lustering plate (1) formed from a foam body (2), endowed with a securing surface (21) to be secured to the rotary plate of a lustering machine and having an active surface (22) wetted with the lustering liquid and coming into contact with the surface to be lustered. The lustering plate (1) incorporates a reservoir of lustering liquid (3) incorporated into the foam body (2). The reservoir (3) has a dispensing valve (4) in the axial position dispensing onto the active surface (22). The valve (4) has a valve seat (41) closed by a blocking device (43) returned to the closed position and endowed with a control device (44) opening the valve (4) by impelled pressing of the foam body (2) via its active surface (22) against the surface to be lustered.

Abstract: A positioning structure for cutting machines or grinder machines has a rotating shaft and a positioning assembly. The rotating shaft has an abutting face, a fixing portion, at least one mounting protrusion, and a fastening hole. The at least one mounting protrusion axially protrudes from the abutting face, and the fixing portion axially protrudes from the at least one mounting protrusion. The fastening hole is axially formed in the at least one mounting protrusion. The positioning assembly is screwed with the rotating shaft and has a positioning element and a fastening element. The positioning element has an abutting portion and a through hole. The fastening element is mounted through the through hole and the fastening hole. Therefore, when a size of an assembling hole of a cutting disk or a grinder disk changes, the rotating shaft does not need to be changed and reinstalled.

Abstract: Enhanced methods are disclosed for performing operations such as cleaning, inspection or data acquisition on an external surface of a hollow cylindrical tubular. Preferred embodiments include providing a fluid dispenser and an abrasion assembly on a buggy that travels up and down the length of the tubular as the tubular rotates. The fluid dispenser includes nozzles that dispense cleaning fluids onto the tubular's external surface. The abrasion assembly includes a swivel brush and a brush train providing different styles of abrasion cleaning of the tubular's external surface. Preferred embodiments of the buggy also carry a range finding laser and an optical camera generating samples that may be processed in real time into data regarding the surface contours and the diameter variations on the tubular's external surface. Cleaning and inspection variables such as tubular rotational speed, or buggy speed, may be adjusted responsive to measured surface contour data.

Abstract: A powerhead for a hand held power tool includes a powerhead assembly, the powerhead assembly being operably couplable to a hand held motive source, the powerhead assembly having a rotatable implement, the implement being selectively rotated by the motive source when the motive source is operably coupled to the powerhead assembly, the implement further being rotatable about an implement axis, the implement axis being disposed transverse to a powerhead assembly longitudinal axis, the implement axis intersecting the powerhead assembly longitudinal axis. A hand held power tool and a powerhead of forming a powerhead for a hand held power tool are further included.

Abstract: A powerhead for a hand held power tool includes a powerhead assembly, the powerhead assembly being operably couplable to a hand held motive source, the powerhead assembly having a rotatable implement, the implement being selectively rotated by the motive source when the motive source is operably coupled to the powerhead assembly, the implement further being rotatable about an implement axis, the implement axis being disposed transverse to a powerhead assembly longitudinal axis, the implement axis intersecting the powerhead assembly longitudinal axis. A hand held power tool and a powerhead of forming a powerhead for a hand held power tool are further included.

Abstract: An installation/uninstallation structure for tooling disk of a grinding tool includes a rotary shaft mounted in the grinding tool and a securing assembly including a securing seat, a shift plate and a securing member. The securing member is movably mounted in the securing seat. The shift plate is pivotally disposed on the securing seat for driving the securing member. In use, the securing assembly is fitted around a rear end of the rotary shaft, when the shift plate is shifted to a locking position, the securing member is latched with the rotary shaft to secure the securing assembly to the rotary shaft for fixing the tooling disk. When the shift plate is shifted to an unlocking position, the securing member is unlatched from the rotary shaft, permitting a user to detach the securing assembly from the rotary shaft for taking off the tooling disk without using any tool.

Abstract: A rotary elliptically shaped head, free spinning, designed to be attached to a pressurized hose, fluid driven. When activated, the fluid is directed thru the head, striking internal longitudinal fins the cause the had to spin longitudinally, at high speed. The fluid is released thru holes in the head, which by the same centrifugal force driving the head along rows of bristles. When applied to a desire surface the head will scrub and clean the surface.

Abstract: A grinding machine with a dust collector includes a driving portion, a transmitting portion, a dust-collecting tube, a fender, an air intake connector and a grinding wheel. The dust produced by the rotation of the grinding wheel is sucked by the dust-collecting tube having an inner tube. The inner tube is interconnected with an exhaust vent of the driving portion and the dust-discharging opening. An outlet of the inner tube is parallel to an airflow passage of the dust-discharging opening, such that when an exhaust gas is discharged from the inner tube, a siphon effect is produced at the airflow passage of the dust-collecting tube to suck and collect the dusts produced by the grinding wheel.

Abstract: A portable water-driven rotary tool for drilling, grinding and polishing concrete and stone that provides for high torque and that uses water pressures as the power source, the tool including a water control valve, an impeller with blades and a drive shaft that has a longitudinal axial water passage disposed therethrough for diverting water used to power the tool onto a work surface for lubrication and as a cleaning agent.

Abstract: A grinder with easily installable/detachable grinding disc, including: a main body in which a driving unit is disposed for driving a rotary shaft, an annular toothed section being formed on the circumference of the rotary shaft; a bracket rotatably disposed under the bottom face of the main body; a support tray disposed under the bracket, several rail channels being radially formed on the support tray; and a predetermined number of detent members respectively slidably disposed in the rail channels. When turning the bracket, the detent members are driven to move along the rail channels. When the detent members are contracted, the arched toothed sections of the inner ends of the detent members engage with the annular toothed section of the rotary shaft, whereby the rotary shaft cannot rotate for replacing grinding disc. After replacing the grinding disc, the detent members are moved outward along the rail channels to disengage from the rotary shaft.

Abstract: An improved structure of an air sander grinder with air chamber mounting and eccentric mounting, and the cylinder air chamber mounting is placed inside the air sander grinder, and an air chamber is placed in the center of the air chamber mounting the sides of which has air inlet and air outlet openings the eccentric mounting includes a mandrel and an eccentric component, and the top of the mandrel has a drive section that is placed in the air chamber of the air chamber mounting, and the bottom of the mandrel has a linkage section connected with the eccentric component; the feature of the present invention is that the air chamber mounting is made by the inner metal ring with an outer plastic ring on the outside; the mandrel of the eccentric mounting is metal mandrel, and the eccentric component is a plastic eccentric component; the eccentric component is formed at the bottom of the metal mandrel.

Abstract: A coupling structure for grinding members adopts a removable structure to fasten a grinding member to a pneumatic tool. One or more grinding member may be mounted on the coupling structure according to requirements. The coupling structure may be used repeatedly to reduce costs.

Abstract: A high torque turbine rotor for a lightweight hand held tool for grinding and polishing having a rotor that includes two separate high pressure air chambers separated by a common housing wall, each air chamber having peripheral air expelling nozzles in a tangential direction to the rotor periphery. The rotor housing is lightweight and increases torque without generally increasing the overall size and weight of the tool housing.

Abstract: A pneumatic grinder with easily replacing grinding disc, including: a main body in which a rotary shaft is eccentrically pivotally connected with and is driven by a drive shaft of the pneumatic grinder, a bottom end of the rotary shaft being for mounting a grinding disc; a rotary member fixedly connected with the bottom end of the rotary shaft and synchronously rotatable with the rotary shaft; and an engaging mechanism movably mounted in the main body. When the engaging mechanism is moved to an engaging position, the engaging mechanism clogs the rotary member to prevent the rotary shat from rotating for replacing the grinding disc. After the replacement is completed, make the engaging mechanism move to a releasing position and releases the rotary member, permitting the rotary shaft to rotate.

Abstract: A high torque turbine rotor for a lightweight hand held tool for grinding and polishing having a rotor that includes two separate high pressure air chambers separated by a common housing wall, each air chamber having peripheral air expelling nozzles in a tangential direction to the rotor periphery. The rotor housing is lightweight and increases torque without generally increasing the overall size and weight of the tool housing.

Abstract: The present invention discloses a polishing pad that can facilitate process stability, extend length of use, and mitigate process non-uniformity and process induced defects for chemical mechanical planarization processes. The polishing pad of the present invention is a composite of a top pad and a sealed sub-pad. The sealed sub-pad has a sealing mechanism that mitigates liquid penetration into the sub-pad thereby maintaining a substantially uniform compressibility of the sub-pad and the polishing pad and extending a useable life of the polishing pad.

Abstract: A grinder with easily installable/detachable grinding disc, including: a main body in which a driving unit is disposed for driving a rotary shaft, an annular toothed section being formed on the circumference of the rotary shaft; a rotary disc rotatably disposed around the main body; a bracket disposed under the bottom face of the main body and drivable by the rotary disc; a support tray disposed under the bracket, several rail channels being radially formed on the support tray at equal intervals; and a predetermined number of detent members respectively slidably disposed in the rail channels. When turning the rotary disc, the detent members are moved along the rail channels and contracted or expanded to make the arched toothed sections of inner ends of the detent members engage with or disengage from the annular toothed section of the rotary shaft.

Abstract: A pneumatic tool with safety effect, including: a main body formed with an internal flow way for a fluid to flow into the main body to drive a cylinder therein; a press switch disposed in the main body for blocking the flow way in normal state; a trigger disposed on the main body for pressing the press switch; a slide member slidably disposed on the main body; and a linking member disposed on the slide member. In normal state, the slide member is such positioned that a position difference exists between the linking member and the press switch. When activating the pneumatic tool, a user pushes the slide member to move the linking member to a position above the press switch. By means of pressing the trigger, the linking member is driven to press the press switch.

Abstract: The present invention provides a pneumatic grinder connected to a driving gear or spindle at the tip end of the coupling shaft, in which a bearing is set upon the front portion for anti-eccentric-shaking, improving the concentricity of the grinder, in order to suit higher running speed smoothly and higher gearing accuracy; the coupling mechanism of the tilting head and the main body is simplified into a single component—retaining cover having two counter revolving oriental threads for securing, meanwhile the sizes of said main body and the driving gear are shortcut; the rotor and the shoots on it are formed in a single process in the injection casting simultaneously, in order to improve manufacturing speed and reduce cost.

Abstract: An automatic feed system 10 is provided for advancing a hydraulically powered work head into a workpiece being cut. A hydraulic fluid powered work head motor 40 drives a diamond drill cutting tool 46 or other cutting tool to cut the workpiece, such as concrete G. Hydraulic pressure in an inlet line 42 feeding hydraulic fluid to the work head motor 40 is monitored to detect when high torque and hence high wearing forces are experienced by the diamond cutting tool 46. A feed motor 30 or other advance is provided to feed the diamond cutting tool 46 into the workpiece. A valve 50 is provided which is pressure sensitive and controls the feed rate of the feed motor 30 in response to pressure in the inlet line 42 delivering hydraulic fluid to the work head motor 40. In this way, a feed rate of the bit 46 or other cutting tool into the workpiece is reduced when high stress conditions exist on the cutting surface of the diamond drill cutting tool 46 or other cutting tool.

Abstract: Methods and apparatuses for planarizing microelectronic substrate assemblies on fixed-abrasive polishing pads with non-abrasive lubricating planarizing solutions. One aspect of the invention is to deposit a lubricating planarizing solution without abrasive particles onto a fixed-abrasive polishing pad having a body, a planarizing surface on the body, and a plurality of abrasive particles fixedly attached to the body at the planarizing surface. The front face of a substrate assembly is pressed against the lubricating planarizing solution and at least a portion of the fixed abrasive particles on the planarizing surface of the polishing pad. At least one of the polishing pad or the substrate assembly is then moved with respect to the other to impart relative motion therebetween. As the substrate assembly moves relative to the polishing pad, regions of the front face are separated from the abrasive particles in the polishing pad by a lubricant-additive in the lubricating planarizing solution.

Abstract: A portable power tool is provided which has a rotating output shaft (13) journalled in two axially spaced bearings (15, 16). A working implement mounting device (19) and an anti-vibration balancing unit (20) are provided at a forward end (13a) of the output shaft (13). And an auxiliary balancer (26) is provided at a rear end (13b) of the output shaft (13) for dynamic balancing of rotating parts including a working implement (17) mounted on the output shaft (13) at operation of the power tool.

Abstract: A speed adjusting device for a pneumatic grinding tool includes an axle having a passage defined longitudinally therein and a plurality of apertures are defined in an outer periphery of the axle. A base is mounted and rotated with the axle. A plurality of slide members are respectively and movably received in the slide paths in the base. A disk has a flange extending from a periphery of a front side of the body and a neck extends from a rear side of the body. A plurality of air holes are defined through the neck. The disk is movably mounted on the axle and rotated with the axle. The flange covers the outside of the base. The air holes are located in alignment with the apertures when in normal condition. The air holes are located off alignment with the apertures when the disk is pushed backward by the slide members affected by centrifugal force.

Abstract: An abrasive article including (i) a first backing, (ii) a plurality of protrusions attached to the first surface of the first backing and including a grinding aid, wherein the first surface of the first backing is contoured by the protrusions so as to define a plurality of peaks and valleys, and (iii) a coating of abrasive particles adhered to the contoured first surface of the first backing so as to cover at least a portion of both the peaks and the valleys.

Abstract: An automotive vehicle body can be sanded with a robotic sanding (polishing) disk that is carried on a robotic head, such that the sanding disk has a relatively constant unit pressure on the vehicle surface as the head moves the sanding disk along the vehicle surface. An automatic supply mechanism can be employed to periodically remove a worn sanding disk from the head, and replace the worn sanding disk with a new sanding disk.

Abstract: A pneumatic tool kit including a main body, a threaded plug, a connecting seat, at least one grinding member, a protective cover, a saw disk seat, an adjustment seat, at least one edge-milling tool, a stopper board and at least one drilling/milling tool. By means of the tool hole of the main body and the connecting seat, four different kinds of tools can be respectively installed on the main body for four different usages including engraving, cutting, edge-milling and drilling. Therefore, the main body is usable for four kinds of usages so that the manufacturing cost for the tool is lowered. In addition, by means of the pneumatic motor of the main body, the tool kit has longer and more stable using life.

Abstract: An improved multi-purpose, direct-drive, water-driven rotary tool having improved torque and power. The present invention includes a housing having a central cavity, an impeller with angled, beveled blades around its periphery, a drive shaft connected to a rotatable mounting pad or backing pad that contains a disk with a grinding or sanding surface that is removably attached thereto. A high pressure water inlet conduit includes a changeable nozzle to allow using the tool with different water sources. The water exiting the nozzle strikes the blades of the impeller, rotating the impeller, which rotates the backing pad and sanding disk. Water is strategically diverted through a bearing mounting plate having holes by a shroud or angular flange having an angular periphery that allows the expended water from the impeller to be efficiently expelled peripherally around the outside of the main cavity of the housing.

Abstract: An abrasive article including (i) a first backing, (ii) a plurality of protrusions attached to the first surface of the first backing and including a grinding aid, wherein the first surface of the first backing is contoured by the protrusions so as to define a plurality of peaks and valleys, and (iii) a coating of abrasive particles adhered to the contoured first surface of the first backing so as to cover at least a portion of both the peaks and the valleys.

Abstract: In a free form machining tool 10 for machining a surface to be machined while bringing the lower end into contact with the surface to be machined by a rotation around an axis z, the tool comprises a spherical tool 12 having a spherical surface machining section 13 on the lower portion, and a bearing 14 for supporting the spherical tool by an axis a of rotation which passes through the center .largecircle. of the spherical surface and is different from the axis. The tool also includes rotating means 16 (for example, a turbine) for rotating the spherical tool around the axis of rotation. Thus, even if the spherical surface machining section comes into contact with the surface to be machined on the axis (radius: 0) of the tool, the spherical surface machining section is rotated around the axis a of rotation which is different from the axis z. Therefore, a peripheral speed of the axis is not zero (0).

Abstract: An abrading or polishing tool comprises a housing that contains a pneumatically drive motor mounted therein. A drive assembly is contained at least partially in the housing and is engaged with the motor to be driven by the motor during operation. A head is engaged with the drive assembly and includes a spindle portion, the head and spindle being rotated during operation of the motor. The head is further configured to engage a working pad for abrading or polishing a work surface. A double bearing assembly is contained within the housing and is engaged with a portion of the spindle adjacent the lower end of the spindle to substantially prevent radial play of the spindle during operation of the tool.

Abstract: An air die grinder secured on a rotary shaft of a pneumatic motor by a fixing device is disclosed. The fixing device includes a sleeve having a driving section with none circular cross-section and a locating section with a circular cross-section. A ball hole is formed through the wall of the locating section of the sleeve. A steel ball is placed in the ball hole and pushed by an outer tube fitted around the sleeve to protrude out of the inner wall of the sleeve and abut against the stem of the grinding wheel, therefore the grinding wheel is located on the die grinder.

Abstract: A metal working machine which has a tool support on which a rotatable working spindle is mounted which can be acted upon by oil-free compressed driving air. A separate duct provides oil-free compressed braking air which serves to stop the tool support after compressed air to the spindle has been switched off. Additionally, an oil-free mist is provided to the machine via a duct for lubricating the bearings of the tool support.

Abstract: The present invention pertains to a device for cutting materials and including a straight blade 10, to which are connected two sharpening units 13, 14 with angulation complementary to that of the cutting edge of the blade. Each sharpening unit 13, 14 comprises a support 15 and defines a chamber 16 for a piston 17 and a pneumatic motor 18 contained in the piston, and has an outlet shaft 19 supporting a diamond disk grinding wheel 20 which is advanced towards the blade to be sharpened.

Abstract: A multi-purpose water-driven rotary tool having improved torque that has a housing with first and second cavities, one of the cavities housing an impeller, the other housing a main drive shaft connected to a rotatable mounting pad or backing pad that contains a disk with a grinding or sanding surface that is removably attached thereto. The high pressure water inlet conduit includes a changeable nozzle to allow using the tool with different water sources. Water is strategically diverted through a bearing mounting plate having holes by a shroud having an angular periphery or angular flange that allows the expended water from the impeller to be efficiently expelled peripherally around the outside of the main cavity of the housing. The device also includes a manually-actuated trigger for the inlet water valve which can be held at the same time with a saddle handle that is pivotal that allows the user to effectively move the device comfortably to a desired working position.

Abstract: A portable abrading or polishing tool including a tool body carrying an air motor which drives an abrading or polishing head relative to the tool body, with the tool including an aspirator energized by pressurized air for inducing a flow of water to a work surface, and with air being delivered from a source to the motor and the aspirator separately, so that the air passing through the aspirator and to the work surface does not first pass through the motor. A check valve prevents reverse flow of water from the aspirator to the motor when the supply of pressurized air is shut off, to thus prevent damage to the motor by the water. Means are provided for holding the check valve in closed condition even when air is supplied to the motor, to enable lubrication of the tool by air containing entrained lubricant without delivery of the lubricant to the aspirator or work surface.

Abstract: A pneumatic tool (10) is described for diverting exhaust air from an air motor (18) between a rearward opening (22), a forward opening (24), or both, without requiring any disassembly. An exhaust diverting valve selector (26) allows adjustment of the direction of flow as determined by an exhaust diverting valve (60) from the exterior of tool (10). A method of manufacturing a pneumatic tool (10) with an exhaust diverting valve (60) is also disclosed.

Abstract: Disclosed is an air motor having an engine pack (with a rotor provided with front and rear retainers, a stator, and vanes) which can be assembled and replaced even by an unskilled person. An air supply joint is engaged with guide projections formed on the inner peripheral surface of a housing, with its forward end portion held in contact with the rear retainer; the forward end portion being fastened by a nut member which is threadedly engaged with the housing. On the rear face of the forward end portion are formed a plurality of first projections produced of a rigid synthetic resin, and on the front face of the nut member corresponding to the first projection are formed a plurality of second projections, so that a firm relation of engagement is established by an elastic force of restoration of the first projection; that is, the nut member will not accidentally become loose owing to the locking effect of the first and second projections.