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| Number | Title | Issue Date |
| 8167689 | System with a tool-holding fixture The invention is based on a system with a tool-holding fixture, which fixture has a slaving device (12) by way of which an inserted tool (14) can be connected operatively to a drive shaft (16), and with an inserted tool (14) which can be ... | 05/01/2012 |
| 7343656 | Multiple face three-axis CNC machine A CNC machine for automatically re-indexing and machining multiple faces of a workpiece includes a traditional three-axis CNC machine and a gripper tool. A bar stock defining a first and at least a second workpiece is loaded within a first and a second vice on the t... | 03/18/2008 |
| 7219585 | Cutting workstation A cutting workstation which includes a cutter mounted on an arm type configuration. The arm configuration is slidably moveable relative to a divided work piece support table, the cutter moveable there between. Further, the cutter is capable of elevating the arm eith... | 05/22/2007 |
| 7029384 | Grinding disk A grinding disk (13) for manually held, motor-driven grinders (1) has a centrally arranged fastening recess (15) open at the grinding disk upper side with an internal thread arrangement (16), with which the grinding disk (13) can b... | 04/18/2006 |
| 7001258 | Polishing jig for rolling mill backup roll bearing A polishing jig of a hydraulic integral system is improved to increase efficiency. A polishing jig 1 for bearing for use in back-up roll of rolling mill including a shaft member 2 on which an inner ring 104 of a bearing 100 for use in bac... | 02/21/2006 |
| 6942556 | Polishing jig for bearing for use in back-up roll of rolling mill A polishing jig of a hydraulic integral system is improved to increase efficiency. A polishing jig 1 for bearing for use in back-up roll of rolling mill including a shaft member 2 on which an inner ring 104 of a bearing 100 for use in bac... | 09/13/2005 |
| 6682407 | Work-piece processing machine The work-piece-processing machine of the present invention is compact and has two tools for precisely processing a work-piece. In the work-piece-processing machine, the work-piece is processed by a first tool and a second tool. Diameter of the second tool... | 01/27/2004 |
| 6676498 | Bi-directional grinder A bi-directional grinder for allowing an operator to change the direction of rotation of the wheel, having a housing, a motor capable of bi-directional rotation, and a shaft. The grinding wheel is mounted on the shaft within a shroud and attached to the s... | 01/13/2004 |
| 6641467 | Power tool A power tool (2) includes a motor (22) pivotally mounted within the housing of the tool. The tool is able to accept any one of a plurality of attachment members (44, 46, 48).... | 11/04/2003 |
| 6569001 | Power tool having a quick clamping mechanism The invention relates to a power tool, in particular to an angle grinder, having a quick clamping device for fastening of a tool between a clamping flange and a counter flange. Such quick clamping devices are usually equipped with an actuation element, du... | 05/27/2003 |
| 6511369 | Grinding wheel replacement safety structure for handheld grinding wheel device A grinding wheel replacement safety structure for handheld grinding wheel device is located between a transmission grinding wheel fitting end and an actuating push button, and includes a safety button, a stop in, a limit actuating link, a link spring, and... | 01/28/2003 |
| 6390907 | Machine tool and machine tool spindle and workpiece mounting-apparatus and grinding process A motorized spindle assembly for a grinding wheel is fabricated with an opening extending through the spindle casing, and stator and so as to extend in the direction of the spindle axis of rotation at least the length of the stator. The opening is of a si... | 05/21/2002 |
| 6220931 | Feeding a grinding wheel in grinding method A spindle 23 of a grinding wheel 28 is rotatively borne by a bench 22 for the grinding wheel through hydrostatic thrust bearings 26 and 27. A pressure regulator 38 for regulating the pressure which must be supplied to at least either of supply ports 26a a... | 04/24/2001 |
| 6217424 | Metal-polishing technique A technique for polishing metal objects such as, for example, those made of aluminum, stainless steel, and brass is described. The technique employs a metal-polishing apparatus which includes a double-jointed arm assembly and a table assembly. The arm ass... | 04/17/2001 |
| 6165056 | Polishing machine for flattening substrate surface There is disclosed a polishing machine capable of flattening a wafer surface uniformly. The machine can modify the flatness of the surface during polishing. The machine has an index table and a polishing head 18. The table attracts the wafer to be polishe... | 12/26/2000 |
| 6036585 | Grinder and grinding method A spindle 23 of a grinding wheel 28 is rotatively borne by a bench 22 for the grinding wheel through hydrostatic thrust bearings 26 and 27. A pressure regulator 38 for regulating the pressure which must be supplied to at least either of supply ports 26a a... | 03/14/2000 |
| 5833522 | Machining spindle apparatus having a hydrostatic bearing for machine tools A machining spindle apparatus has a hydrostatic bearing for machine tools. The machining spindle apparatus includes a built-in motor built into the middle of a housing, as well as front and rear hydrostatic bearings respectively mounted on the front side ... | 11/10/1998 |
| 5816893 | Method and device for sharpening tools, particularly dental hand instruments A method and apparatus for sharpening tools, particularly hand instruments used in dental care. The apparatus includes a fixed base (19) and a rotary plate (14) fitted thereon, a grinding stone (10) pivoted on an axle (11), and a motor (20) for rotating t... | 10/06/1998 |
| 5718614 | Control apparatus for grinder Downfeed apparatus in a grinder controlling the grinding wheel down in fast, medium and slow speeds, and up in fast speed. It is fed down continuously in successive passes throughout the grinding operation, and at the end of the grinding, the grinding whe... | 02/17/1998 |
| 5676124 | Ceramic and masonry power saw A ceramic tile and masonry power saw is disclosed. The saw has an electric motor and drives the circular diamond saw through a drive belt positioned immediately adjacent to the saw to minimize bending moments and stress. A pivoting cutting table has pinch... | 10/14/1997 |
| 5662517 | Compressed-air-driven metal working machine 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 aft... | 09/02/1997 |
| 5630749 | Apparatus for the mechanical removal of deposits on welding electrodes The invention relates to an apparatus for the mechanical removal of deposits on welding electrodes. Welding electrodes have to be cleaned after a certain number of welding operations due to deposits. Therefore an apparatus is provided which is essentially... | 05/20/1997 |
| 5618226 | Apparatus for grinding a reciprocal trimming blade An apparatus for grinding a blade used in, for example, a glass or hedge trimmer including grinder support and a blade mount provided close to each other. The grinder support holds a grinder, which has a round grindstone, in such a manner that the grindin... | 04/08/1997 |
| 5295328 | Device for the sharpening, grinding and polishing of dental, parodental and/or surgical instruments The disclosure is directed to a device for the sharpening, grinding and polishing of dental, parodental or surgical instruments, comprising a grinding body (48) with a grinding surface, said grinding body (48) being carried by a support structure (36) con... | 03/22/1994 |
| 5042203 | Abrasive disc exchange apparatus for use in vertical-spindle grinding machine An abrasive disc exchange apparatus for use in a vertical spindle grinding machine includes a cover member surrounding an abrasive disc, and has an opening disposed in a radial direction of the abrasive disc for the passage of the abrasive disc therethrou... | 08/27/1991 |
| 5024027 | Tool mounting mechanism for a machine tool A tool mounting mechanism for a machine tool, particularly for surface grinding machines, comprises a spindle sleeve, in which a tool spindle, such as a grinding wheel spindle, is mounted without a backlash. The tool spindle has mutually opposite end port... | 06/18/1991 |
| 5018309 | Universal grinder In the case of a universal grinding machine, it is provided that a workpiece spindle head, a grinding spindle head and a footstock are each constructed as separate constructional units which, by means of fixing devices, are fixed to the base, these fixing... | 05/28/1991 |
| 4989376 | Control mechanism for advancing parts of a machine tool An electronic encoder is driven by the cross shaft in the grinder that moves the grinder. The encoder includes a rotary disc constantly driven by the cross shaft, forwardly and rearwardly. Associated with the encoder is an electronic counter in which coun... | 02/05/1991 |
| 4987703 | Method of and apparatus for changing material removing wheels in machine tools A grinding wheel which is mounted on the tool spindle of a grinding machine is detached from the tool spindle and is transferred onto a second spindle while the two spindles rotate. Reattachment of the grinding wheel to the tool spindle also takes place w... | 01/29/1991 |
| 4850146 | Apparatus for grinding a workpiece A wheel slide 20 for supporting a grinding wheel 40 is mounted on a carriage 100 which extends across a work area to engage parallel horizontal ways 61, 62 on opposite sides of the axis of rotation B of a workpiece W. The carriage 100 has ways 114, 115, 1... | 07/25/1989 |
| 4769952 | Abrasive-supporting head for honing machines The invention relates to an abrasive-supporting head for honing machines comprising an assembly which rotates around a vertical axis which is substantially perpendicular to the plane of arrangement of a slab being worked. The rotating assembly supports a ... | 09/13/1988 |
| 4754574 | Apparatus for grinding a workpiece An improved apparatus for grinding a workpiece (W) includes a base (10) upon which a headstock (21) and a tailstock (23) are mounted to support a workpiece for rotation about axis (A). A carriage (300) is movable along the base. A light weight wheel slide... | 07/05/1988 |
| 4615150 | Device for the in situ reprofiling of the head of at least one rail of a railroad track A rail grinding device comprising at least one reprofiling unit (80,81) driven along the track by a railroad vehicle (83); a jack (85) to displace in height the reprofiling unit with respect to the railroad vehicle (83) and to apply at least one tool of t... | 10/07/1986 |
| 4574768 | Support for rotary material removing tools in grinding machines The shaft of a dressing tool for grinding wheels is rotatable in two spaced-apart sets of roller bearings each of which is mounted in the radially extending leg of a discrete housing section. The two sections are connected to each other by two packages of... | 03/11/1986 |
| 4534133 | Machine for superfinishing annular workpieces A machine for superfinishing the inner race surface of annular workpieces such as bearings with two honing stones of different grain sizes held by a common holder arm. Structure is provided for reciprocally arcuately moving the holder arm perpendicularly ... | 08/13/1985 |
| 4485592 | Machine for superfinishing annular workpieces A machine for superfinishing annular workpieces such as bearings, including a mechanism for rotating the annular workpiece about a first axis of rotation, a holder for retaining in fixed relative positions a plurality of holding stones, and a mechanism fo... | 12/04/1984 |
| 4453348 | Apparatus for abrasive machining of workpieces An apparatus for abrasive machining of workpieces comprises a base in the form of a carriage, a tool head having a spindle with an abrasive tool fastened thereto, an articulated four-bar linkage, a drive for rotating the abrasive tool and an actuating cyl... | 06/12/1984 |
| 4441280 | Device for centerless grinding of rotation-symmetrical surfaces on work pieces Device for centerless grinding of rotation-symmetrical surfaces on workpieces at a grinding station, including drive means for turning a workpiece about the axes of symmetry thereof during grinding, a support bar for supporting the workpiece during turnin... | 04/10/1984 |
| 4418502 | Elevatable grinding wheel motor support A support mounting a grinding wheel motor for adjustable movement with respect to a grinding station in a saw chain depth-grinding apparatus. The support includes a threaded element to which the motor is secured, and a sleeve mounted at a fixed position w... | 12/06/1983 |
| 4201254 | Multiple purpose woodworking structure The specification describes a multiple purpose woodworking structure including a working surface having a single work area for performing a plurality of operations. A motor rotatable from a locked horizontal position to a locked vertical position is locat... | 05/06/1980 |
