| Patent Number |
Title Of Patent |
Date Issued |
| RE33335 |
Device for attaching a tool |
September 18, 1990 |
| A device for attaching a tool in portable angled grinders, allowing the connection to be released without special accessories. The device consists essentially of a hollow driveshaft, of a spindle that slides inside it, and of a tool-securing point consisting of a mating flange and nut. T |
| D386378 |
Triangle grinder |
November 18, 1997 |
|
| 6293859 |
Electric power tool with rotatable handle |
September 25, 2001 |
| A power tool is disclosed, having an elongated motor housing in which an electric motor is received, having a gear drive housing at a first end of the motor housing to receive a gear drive for driving a working spindle, and having a handle element which is fastened rotatably at a second |
| 6236173 |
Series wound motor |
May 22, 2001 |
| A series wound commutator motor is disclosed which is particularly suited for an inverse-speed electric tool. A switch is provided for switching between a motor operation mode and a braking operation mode, wherein in motor operation at least one field coil is connected in series with an |
| 6176162 |
Power-driven screwdriver with removable depth stop |
January 23, 2001 |
| A screwdriver is disclosed, comprising a removable depth stop which selectably either, when equipped with the depth stop, allows noiseless shutoff or, with the depth stop removed, allows torque-dependent shutoff, without any chattering occurring when the machine continues to run. To |
| 6173792 |
Power-driven screwdriver with torque-dependent release clutch |
January 16, 2001 |
| A power-driven screwdriver with a torque-dependent release clutch having two clutch halves is disclosed. The screwdriver comprises additional entrainment elements provided on the clutch halves for bridging the release clutch. To this end, a motor-driven drive gear is mounted to rotat |
| 5601483 |
Power tool |
February 11, 1997 |
| A power tool, which is preferably configured as a right-angle grinder, has a motor-driven hollow spindle to drive a tool, which is fastened between a clamping flange and a counterflange by means of a quick clamping device via a tension spindle, coaxial with the hollow spindle, that is te |
| 5544643 |
Method for saving ductile from material having a concrete lining |
August 13, 1996 |
| A saw blade possesses a base element onto which boron nitride particles are applied in the cutting region. The boron nitride particles are bonded by means of a metallic bonding layer, which preferably consists of nickel or a nickel alloy with a Vickers hardness of at least 600 HV. The bo |
| 5441450 |
Power tool having means to switch from oscillatory movement to rotary movement |
August 15, 1995 |
| A power tool, especially a handheld sander, is described, possessing a motor-driven drive shaft that can be alternatively coupled either by means of an oscillation drive to an oscillatory tool drive shaft, or by means of a rotary drive to a rotary tool receptacle coaxial with the oscilla |
| 5356350 |
Motor-driven screwdriver with variable torque setting for equal torques regardless or countertor |
October 18, 1994 |
| A motor-driven machine with variable torque setting feature, especially a screwing machine with a torque-controlled switching-off feature, has a shaft which is driven by a motor via a transmission for driving a tool, and a setting ring for presetting a torque at which the shaft is to be |
| 5319889 |
Grinder with dust exhaust means |
June 14, 1994 |
| The invention proposes a grinder having a rocking shaft adapted to set a grinding tool into an oscillating movement about a rocking axis fixed to the device, the grinding tool having a grinding surface comprising at least one corner area. For the purpose of extracting the grinding dust, |
| 5309805 |
Cutting knife |
May 10, 1994 |
| A cutting knife for a cutting tool equipped with an oscillating drive, for cutting off the cement bead of a glass pane cemented in place, in particular in a motor vehicle, comprises at least one cutter element which can be connected, via a mounting element and a mounting opening, to an |
| 5292352 |
Method for grinding plastics or glass |
March 8, 1994 |
| The invention proposes a method for grinding plastics or glass, in particular for grinding acrylic glass, where a mechanically driven grinding tool is moved across a surface to be finished (44). Grinding is effected by a dry process, without any liquid working agent, the grinding too |
| 5263283 |
Portable power tool |
November 23, 1993 |
| A portable power tool has, in order to drive a tool (12), a hollow spindle (14) to which the tool (12) can be fastened between two flanges (16, 18). The outer flange (16) is configured at the end of a clamping bolt (22) that is inserted through a central opening (17) of the tool (12) and |
| 5231910 |
Device for producing U-shaped surface channels in sheeting |
August 3, 1993 |
| A device is disclosed for producing surface channels of at least approximately rectangular cross-section in sheeting consisting of a soft material, in particular mineral-fiber insulating mats or sheeting consisting of a styrene polymer. The device makes use of a motor-operated cuttin |
| 5207528 |
Retaining device for an angled drive |
May 4, 1993 |
| The invention concerns a retaining device for an angled head (10, 11) that is driven by a drive (1) especially a drilling gun, in which the drive unit (1) has a receiving connector (2) to receive the angled head (10, 11). To allow adjustment of the angular position of the angled head wit |
| 5199223 |
Device for clamping a disc-shaped tool |
April 6, 1993 |
| A compact device for clamping a disc-shaped tool on a tool spindle of a portable machine tool with a clamping anchor arranged in the tool spindle, with a clamping flange attachable to the free end of the clamping anchor, with an abutment arranged at the tool end of the tool spindle and w |
| 5180261 |
Motor-operated tool |
January 19, 1993 |
| A motor-operated tool is provided for tool sockets revolving about an axis, in particular for drills or spanners. The tool comprises a tool head containing a drive spindle. The drive spindle comprises a driving opening for a drive shank of the tool socket and a plurality of ball elements |
| 5123216 |
Portable grinder |
June 23, 1992 |
| Grinding with known grinders such as corner, belt or vibratory grinders poses insoluble problems, such as the grinding of inner edges set at an angle to each other for example in retainer strips of window and door glasses. A portable grinder has thus been developed in which the grinding |
| 4989374 |
Portable machine tool with automatic locking of the work spindle |
February 5, 1991 |
| In order to so improve a portable machine tool, in particular, an angle grinder, with a drive, with a work spindle having a tool clamping means and with a securing device which is operable from outside an apparatus housing and by means of which the tool clamping means is transferable fro |
| 4946146 |
Holding device, in particular, for tools or workpieces for industrial robots |
August 7, 1990 |
| In a holding device with a receiving part held on a holder by means of a linear and/or rotary guide means, in particular, for tools for industrial robots, wherein the motion of the receiving part relative to the holder can be damped by means of a restoring damping element which can be |
| 4920702 |
Portable grinder |
May 1, 1990 |
| Grinding with known grinders such as corner, belt or vibratory grinders poses insoluble problems, such as the grinding of inner edges set at an angle to each other for example in retainer strips of window and door glasses. A portable grinder has thus been developed in which the grinding |
| 4905420 |
Grinder with dust exhaust means |
March 6, 1990 |
| In order to improve a grinder comprising a grinding tool which is oscillatingly driven through a small pivot angle about a pivot axis fixed on the grinder and which has a grinding surface with at least one corner region, with at least one suction channel extending throughout the grin |
| 4847721 |
Safety device for a tool powered by an electric motor |
July 11, 1989 |
| A safety device for a tool powered by an electric motor. It has a main switch, electronic controls, and a tachometer-generator. In order to provide a device for switching off a motor as a function of motor speed that is simple and economical and that will retain the same nominal swit |
| 4779687 |
Electric tool with source of power independent of the line |
October 25, 1988 |
| An electric tool with a source of power that is independent of the line and with a transmission housing or motor housing that is also designed to function as a grip, with another grip merging into one side of it. To position the center of gravity such that the tool will be easier to hand |
| 4779382 |
Mechanism for mounting a disk-shaped attachment on the spindle of a portable electric tool |
October 25, 1988 |
| A mechanism for mounting a sanding disk to the spindle of a portable right-angled grinder that will allow the connection to be released without extra tools. The mechanism consists essentially of a hollow spindle (18), of a tensioning anchor (22) that is accommodated inside the spindle (1 |
| 4758754 |
Portable electric tool with variable torque |
July 19, 1988 |
| In motor-operated machines, especially portable electric tools, it is essential to prevent an impermissibly high torque on the driveshaft or operating spindle. This is attained by means of a torque-disengagement mechanism. An especially elegant, compact, precisely responsive torque-d |
| 4739435 |
Safety device for an electric power tool |
April 19, 1988 |
| A safety device for an electric power tool, especially a portable tool. It has a main switch, electronic controls, a tachometer-generator, and a relay. The relay electrically parallels the motor, acts on the supply of current to the motor through a relay contact, and is activated through |
| 4700478 |
Knife for cutting through the adhesive that fastens a window pane in place |
October 20, 1987 |
| A knife to be mounted in an oscillating tool for cutting through the adhesive that fastens a window pane in place, especially in a motor vehicle. To reduce the risk of damage to its edge and to the window frame or other areas of the vehicle body, the knife has a rest made out of a so |
| 4671364 |
Power-screwdriver device with variable torque adjustment |
June 9, 1987 |
| A power-screwdriver device with variable torque adjustment consists essentially of a drive mechanism, transmission, and cutoff mechanism. In order to provide a power screwdriver that is strong and inexpensive and in which the torque can be controlled with no need for a torque clutch, the |
| 4655103 |
Clutch for power screwdrivers |
April 7, 1987 |
| A clutch for power screwdrivers. It has a transmission, an adjustable bit stop, and a drive shaft. It also has a cogwheel with cams on one face and a clutch disk with catches on one face mounted on the drive shaft. The object is a low-noise, wear-resistant clutch. The drive shaft is in o |
| 4621854 |
Device for changing tools in industrial robots |
November 11, 1986 |
| A device for changing tools, pick-ups, welding torches, and other implements that can be handled by industrial robots. It consists of an upper and lower part. In order to obtain optimal cost effectiveness a linear drive mechanism guides a hook-shaped structure in the upper part along |
| 4597227 |
Device for attaching a tool |
July 1, 1986 |
| A device for attaching a tool in portable angled grinders, allowing the connection to be released without special accessories. The device consists essentially of a hollow driveshaft, of a spindle that slides inside it, and of a tool-securing point consisting of a mating flange and nut. T |
| 4574532 |
Protective-hood fastening for portable angled grinders |
March 11, 1986 |
| A protective-hood fastening for portable angled grinders is disclosed. The protective hood is attached by a tensioning strap and screw to, and can be released from, a spindle collar on the gear housing. A securing element prevents the hood from slipping off the housing and into the grind |
| 4543720 |
Cutting tool |
October 1, 1985 |
| A cutting tool for separating beads of adhesive, with a U-shaped cross-section consisting of two flanks connected by a web. One flank is a sickle-shaped blade and the other is employed to attach the tool to an oscillating driveshaft. The center of curvature of the sickle shape extend |
