Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7220161 | Automatic sharpening system for ice-skates A method is for using a skate-grinding device. The method provides an automatic sharpening system (10) that has grip members (14, 16) and a grinding wheel (28). A blade (18) of a skate (20) is inserted into a groove (19). Th... | 05/22/2007 |
| 7131921 | Belt-driven conical-pulley transmission A continuously variable transmission having two pairs of conical disks operatively connected by an endless torque-transmitting belt. One of each of the disk pairs is axially movable relative to the other along a supporting shaft. The movable disk includes an inner t... | 11/07/2006 |
| 7115019 | Grinding method and grinding machine In a grinding machine, a generally cylindrical workpiece having at least first and second grinding areas is ground by use of a grinding wheel supported by a wheel head. The first grinding area is first ground such that power consumed by the grinding machine is maint... | 10/03/2006 |
| 7102206 | Semiconductor substrate, method for fabricating the same, and method for fabricating semiconductor device In a semiconductor substrate having a notch in an edge portion thereof, each of the two shoulder portions of the notch is configured as an arc and the difference in curvature between the two shoulder portions of the notch is not less than 0 mm and not more than 0.1 ... | 09/05/2006 |
| 7094128 | Automatic machine for grinding the borders of glass panes An automatic machine for grinding the borders of glass panes, particularly the edges, arranged preferably vertically but applicable to any other arrangement, comprising devices which allow the machining of glass panes, which are notoriously fragile and have an irreg... | 08/22/2006 |
| 7083500 | Method and device for grinding the outside and inside of a rotationally symmetric machine part comprising a longitudinal borehole A machine part with a conical effective surface, which is machined by means of a device comprising a machine bed, a longitudinally movable grinding bench, and a workpiece spindle head that clamps the machine part by means of clamping jaws via a chuck. The conical ef... | 08/01/2006 |
| 7037182 | Template device for the control of the movements of diamond milling cutters or the like, to be mounted on marble or stone slab border polishing machines The template device according to the present invention permits to determine the procedure for an angular displacement of the diamond milling cutter heads in respect to the size of the slab to be worked, and precisely the slab thickness, in order to obtain the same p... | 05/02/2006 |
| 6086463 | Tester with interchangeable inserts for grinding wheels An apparatus for grinding edges of rigid materials including a support member, an upper grinding element rotatably mounted relative to the support member, a bearing affixed to the upper grinding element, a lower grinding element rotatably mounted relative... | 07/11/2000 |
| 5609512 | Method and apparatus for off-line honing of slicer blades An apparatus and method for honing, sharpening or grinding a curved peripheral cutting surface of a slicer blade are provided. Included is the use of one of a set of interchangeable cams that generally follows the curved shape of the blade cutting surface... | 03/11/1997 |
| 5490811 | Apparatus for chamfering notch of wafer A method and apparatus is provided for chamfering a notch of a wafer by controlling the operation of a disc shaped rotational grandstone by means of a profiling control mechanism, including a holding and rotation mechanism for rotating the wafer around th... | 02/13/1996 |
| 5325840 | Watch crystal cutting machine A pattern holding assembly and a crystal material holding assembly are paired on opposed ends of a shaft passing transversely through a base unit such that the pattern and the crystal material are simultaneously rotated with a driven shaft through 360 deg... | 07/05/1994 |
| 5313740 | Scanning device and use thereof A moulding is contacted by two end pieces of a rotatable first holding part and is scanned by a disk. For the suppression of relatively large elastic deformations of the moulding by the pressure exerted by the disk, the moulding is also contacted by a sec... | 05/24/1994 |
| 5005318 | Method and apparatus for cutting glass blanks Apparatus for cutting glass blanks according to a particular contour, comprises a scoring maching for scoring the contour on the glass blank, a breaking machine for severing the scored contour from the glass blank, and a grinding machine for smoothing the... | 04/09/1991 |
| 4976070 | Adjustable cam An adjustable cam is disclosed for use in grinding apparatus of the type where a cam pivots a part holder into and away from a grinding wheel. The adjustable cam consists of a central portion having two adjustable portions fixed at its ends such that the ... | 12/11/1990 |
| 4887395 | Wavy-tilt-dam seal ring and apparatus for shaping seal rings A unique wavy-tilt-dam shaped mechanical face seal ring, a mechanical face seal which incorporates the wavy-tilt-dam shaped ring, and an apparatus for shaping seal rings. The face shape of the ring is contoured to include a number of waves, tilts and a da... | 12/19/1989 |
| 4833834 | Camshaft belt grinder Various embodiments of multiple belt camshaft grinding machines each have grinding belt drive, contouring and support members carried on a feed table for separate control of cam contouring and grinding feed rate while the camshaft workpiece is carried on ... | 05/30/1989 |
| 4744176 | NC-controlled edge grinding machine Glass-grinding machine for machining the edges of glass panes, particularly vehicle panes, constructional glass and furniture glass, with a turntable arranged with a vertical turning axis and exhibiting a clamping device for the positioned anchorage of ea... | 05/17/1988 |
| 4667443 | End face grinding apparatus A one-joint type horizontal pivot arm is adopted as contour tracing mechanism for controlling the position of a grinding unit along a contour of a plate material. The grinding unit is attached to a distal end of the pivot arm and is position-controlled by... | 05/26/1987 |
| 4662120 | Cam grinding machine A cam grinding machine of the type in which a grinding wheel is moved toward and away from a cam shaft rotatably supported on a table, thereby to shape intake and exhaust cams of said cam shaft to predetermined profiles, the cam grinding machine comprisin... | 05/05/1987 |
| 4648209 | Small-sized drill grinding machine A drill grinding machine of bench type wherein a drill can be ground by a required amount automatically and accurately. The grinding machine comprises a rotor installed adjacent to a turntable, first and second transmission shafts connected to each other ... | 03/10/1987 |
| 4642942 | Method and apparatus for grinding the tip of a twist drill Described herein is an apparatus for grinding a twist drill bit, especially for web thinning and split pointing of the tip of a twist drill. The apparatus includes a grinding disk and a drill bit holder movable relative thereto mounted on a support. The s... | 02/17/1987 |
| 4638601 | Automatic edge grinder The edge profile machine employs a centering station in which a photosensor measures a number of points on the periphery of a wafer so that the shape of the wafer and location of the geometric center can be determined in a computer. A rotatable head serve... | 01/27/1987 |
| 4624610 | Milling machine A method for milling a radial projection on an elongated workpiece such as a camshaft. A milling head is provided with a plurality of cutting elements mounted in a circular arrangement on a conical face portion thereof. The head is supported with its axis... | 11/25/1986 |
| 4617762 | Cam controlled machine for forming non-standard surfaces A cam controlled grinding machine in one embodiment of which the spindle is supported for rotation and lateral movement within a nest of three annular rings. Advantageously, roller bearing arrays between the spindle and the first annular ring, the first a... | 10/21/1986 |
| 4594768 | Trimming ceramic flatware Dust-pressed plates (P) are trimmed to a predetermined peripheral profile by means of three milling cutters rotating at around 12,000 r.p.m. The cutters are uniformly spaced about a central axis and operate simultaneously on the periphery of a plate while... | 06/17/1986 |
| 4587767 | Apparatus for grinding An arrangement for relief grinding and polygonal grinding on a grinding machine has a device for moving the workpiece spindle and workpiece towards the grinding disk linearly of the pivotable operating lever.... | 05/13/1986 |
| 4551048 | Milling machine A milling machine for milling a radial projection on an elongated workpiece such as a camshaft. A milling head is provided with a plurality of cutting elements mounted in a circular arrangement on a conical face portion thereof. The head is supported with... | 11/05/1985 |
| 4544310 | Clutch and transmission mechanism A mechanism for machining an object, such as a key blank, to a desired shape at a plurality of successive positions in an axial direction of the object, includes a holder for the object. The holder is axially movable by means of a transfer mechanism with ... | 10/01/1985 |
| 4536991 | Worktable with lateral and rotational movement A worktable comprises upper and lower members that fit together in sliding relation with a rectangular extension of the upper member protruding into a recess in the lower member. The recess is larger than the extension so as to permit the upper member to ... | 08/27/1985 |
| 4528780 | Process and apparatus for the control of position of a tool of an edge-processing machine for glass panes A process and apparatus for the control of the path of the grinding tool of an all-around edge grinding machine supporting a glass pane for movement about a rotational axis. The grinding tool is positively guided into contact with the edge of the glass pa... | 07/16/1985 |
| 4527356 | Cam grinding machine A cam grinding machine which includes a machine frame, a turning grinding wheel adjacent the frame, a swingable table positioned opposite to the frame, and a turnable work shaft for holding a workpiece mounted on the table. The table is controlled in the ... | 07/09/1985 |
| 4525958 | Method of controlling article speed during edge grinding An edge grinder includes a shaft for supporting a glass sheet template in spaced relationship to one another. The template and glass sheet are rotated about a sheet axis of rotation and a grinding wheel is rotated about a wheel axis of rotation. The grind... | 07/02/1985 |
| 4497140 | Cam grinding machine A cam grinding machine for grinding a cam in accordance with the profile of a master cam (6). The machine is equipped with an apparatus for substantially compensating lift error of the cam due to grinding wheel wear, said apparatus being provided with a p... | 02/05/1985 |
| 4478007 | Tool positioning device for machining the edges of sheet or plate materials The device comprises a feeler provided for following the edge profile of the plate or sheet to be machined and having two edge-contacting elements spaced apart from each other and carried on a movable element adapted to control a motor for angularly posit... | 10/23/1984 |
| 4461330 | Portable woodworking power tool A woodworking power tool comprising a base plate having a motor mounted thereon at one end of the base plate. The motor has a motor housing on which a spindle housing is mounted for rotation through an arc of 180°. The spindle housing has a spindle there... | 07/24/1984 |
| 4459780 | Cabochon copy grinding apparatus A cabochon copy grinding apparatus comprises a flexible template of a variable curvature, a template supporting ring the template head head of an adjustable holding distance, a grinding wheel, a master cabochon attaching shaft, a workpiece attaching shaft... | 07/17/1984 |
| 4443976 | Cylindrical grinding machine A cylindrical grinder for effecting stock removal from a cam surface on a workpiece, the cam surface including a base portion, a nose portion and flank portion joining the base and nose portions, the nose portion having a smaller radius of curvature than ... | 04/24/1984 |
| 4434582 | Glass trimming cutter with roller conveyor A glass trimming cutter for working the edges of glass panes is disclosed. The cutter includes a horizontally arranged, motor-driven rotary table having releasable gripping devices for temporarily securing glass panes in position. One or more peripheral c... | 03/06/1984 |
| 4429925 | Ball bearing method for assembling the bearing and an apparatus for grinding the bearing On the periphery of the ball bearing, six regions alternately ensure upon assembly of the bearing a pre-stressing of the balls in each direction, and six unloaded regions separate these bearing regions. In this way, the bearing is rendered rigid as concer... | 02/07/1984 |
| 4426811 | Method of and apparatus for grinding the edges of glass sheets A method of grinding glass sheets whose edges are polygons that are not symmetrical about a point is carried out in an apparatus having a supply station for supporting a stack of such sheets with all of the sheets in the stack in vertical registration, a ... | 01/24/1984 |
