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| Number | Title | Issue Date |
| 7578728 | Lapping system having a polymeric lapping tool A lapping system including: (a) a workpiece having a metal working surface; (b) a lapping tool having a contact surface for disposing generally opposite the working surface, the contact surface including an organic, polymeric material; (c) a plurality of abrasive pa... | 08/25/2009 |
| 6932679 | Apparatus and method for loading a wafer in polishing system The present invention includes a polishing pad or belt secured to a mechanism that allows the pad or belt to move in a reciprocating manner, i.e. in both forward and reverse directions, at high speeds. The constant bidirectional movement of the polishing pad or belt... | 08/23/2005 |
| 6435951 | Electrically driven grinder for ceramic cutlery An electrically driven grinder for ceramic cutlery 1 has a rough machining diamond abrasive wheel 2 comprising a disc-shaped member provided with a grinding surface on its periphery and a finishing machining diamond abrasive wheel comprising a substantial... | 08/20/2002 |
| 6435953 | Coin cleaning apparatus A coin cleaning and grinding apparatus includes a conveyor for conveying coins, two drive rollers of urethane sponge having a urethane hardness between 70 and 90 degrees, and a pair of primary grinding rollers and a pair of secondary grinding rollers of u... | 08/20/2002 |
| 6177206 | Surface quality enhancement of aerospace skin sheet The present invention is directed to polishing the surface of an airplane part to an improved specularity by adding the additional step of sanding prior to the polishing step.... | 01/23/2001 |
| 5618223 | Method and apparatus for recycling sand An apparatus to remove adhering material from the surfaces of sand to recycle the sand is disclosed. The apparatus includes a container (13) to hold sand (S) to be processed, the container having a bottom opening; pressing means (17-20) to press the sand ... | 04/08/1997 |
| 5591068 | Precision non-contact polishing tool A non-contact polishing tool that combines two orthogonal slurry flow geometries to provide flexibility in altering the shape of the removal footprint. By varying the relative contributions of the two flow geometries, the footprint shape can be varied bet... | 01/07/1997 |
| 5353462 | Glass plate washing machine A glass plate washing machine has transferring apparatus for transferring glass plates and a plurality of electric motors disposed above the transferring apparatus. The motors are disposed in rows across the transferring apparatus. The motors which belong... | 10/11/1994 |
| 5095661 | Apparatus for transporting wafer to and from polishing head Apparatus for transporting a wafer into position against the pressure head of apparatus for polishing the wafer. The transport apparatus includes a dolly for positioning a wafer over a transport head assembly. The transport head assembly removes the wafer... | 03/17/1992 |
| 4872289 | Cutter A cutter for cutting a plate-like material such as a glass sheet along concentric circular inside and outside cutting lines. The cutter includes a movably mounted supporting base stand, at least two material holding chucks disposed on the supporting base ... | 10/10/1989 |
| 4084535 | Apparatus for cleaning submerged surfaces The present invention provides an apparatus for cleaning submerged surfaces. In the apparatus two rotary brushes are supported side-by-side by a frame and provided with drive mechanisms to rotate the brushes in opposite directions; the brushes are each pr... | 04/18/1978 |
