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| Number | Title | Issue Date |
| 7329172 | Rotary mower blade sharpener having movable griding wheels A device and method for sharpening a mower blade are provided, in which a mounting device for mounting a rotary blade having two opposite cutting edges to be sharpened, wherein the mounting device is capable of positioning the blade in a first fixed state and a seco... | 02/12/2008 |
| 7097544 | Chemical mechanical polishing system having multiple polishing stations and providing relative linear polishing motion An apparatus and associated methods for polishing semiconductor wafers and other workpieces that includes polishing surfaces located at multiple polishing stations. Multiple wafer heads, preferably at least one greater in number than the number of polishing stations... | 08/29/2006 |
| 7066798 | Adapter for grinding machine Disclosed is an adapter for grinding machine comprising: a grinding shaft sleeve of cylindrical shape whose one end is open and having at least one through hole formed at a selected position of an outer circumference; a grinding shaft rotatably and movably fitted in... | 06/27/2006 |
| 6881130 | Edge grinding A method of positioning a grooved grinding wheel relative to a disc-like circular workpiece for edge grinding the workpiece using the groove in the wheel includes the steps of mounting the workpiece for rotation about a first axis, mounting the grinding wheel for ro... | 04/19/2005 |
| 6722961 | Polishing machine for wheel rims It comprises a plurality of carrying units mounted on a turntable, with each of the carrying units securing a wheel rim or the like to be polished, and a plurality of polishing units, each one of which includes a polishing element that carries out a polishing operat... | 04/20/2004 |
| 6428397 | Wafer edge polishing method and apparatus A semi-conductor wafer (12) has its inclined edge flanks polished by a grooved wheel (16) of synthetic plastics material, while a jet (20) of polishing slurry, which may comprise colloidal silica, is fed downwards into the zone of contact between the whee... | 08/06/2002 |
| 5591066 | Arrangement for ball shot peening helical compression springs A shotpeening machine for helical compression springs. It comprises a spring-peening chamber accommodating shot-impelling rotors, mechanisms for accommodating and tensioning the springs, and mechanisms for loading the springs into and unloading them from ... | 01/07/1997 |
| 5498198 | Grinding machine A grinding machine comprises a table movably disposed on a fixed base to undergo reciprocal movement relative to the fixed base along a reciprocating axis. A first shaft is rotatably disposed on the table to undergo rotation relative to the table about a ... | 03/12/1996 |
| 5317836 | Apparatus for polishing chamfers of a wafer An apparatus for polishing edge chamfers of a semiconductor wafer to mirror gloss, having a rotatory cylindrical buff formed with annular groove(s) in its side and a wafer vacuum holder capable of holding and turning the wafer circumferentially, wherein t... | 06/07/1994 |
| 4841679 | Method and apparatus for manufacturing cam elements Cam elements (1), which are to be secured to a shaft to make a built-up cam shaft assembly, have their peripheries ground to the required shape by being supported in alignment with one another and ground by at least one pass of a contoured grinding wheel ... | 06/27/1989 |
| 4014139 | Wheel balance and truing machine A wheel-balance machine is provided in which a wheel and tire combination is mounted on a rotatable hub. The hub may be adjusted to be freely rotatable so as to determine and compensate for static unbalances of the tire/wheel combination, and it may be co... | 03/29/1977 |
| 3943666 | Method and apparatus for burnishing flexible recording material A method and apparatus for treating the recording layer of flexible recording elements to remove protruding agglomerated particles formed during the fabrication process and to provide an extremely smooth surface finish on the order of 1.8AA or less. Sever... | 03/16/1976 |
