Did You Know...
...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| D653685 | Wet abrasive system | 02/07/2012 |
| D650817 | Mounting platform for polishing machine | 12/20/2011 |
| D640714 | Grinder | 06/28/2011 |
| D620509 | Mobile grinding machine | 07/27/2010 |
| D614213 | Drum-shaped cymbal polisher | 04/20/2010 |
| D595317 | Polishing machine | 06/30/2009 |
| D585914 | Grinder/polisher | 02/03/2009 |
| D584323 | Planer | 01/06/2009 |
| D581957 | Ophthalmic lens edger | 12/02/2008 |
| D565066 | Holder for an optical connector end-face polishing machine | 03/25/2008 |
| D562855 | Drum sander | 02/26/2008 |
| D559872 | Grinding machine | 01/15/2008 |
| D551686 | Planer | 09/25/2007 |
| D546845 | Planer | 07/17/2007 |
| D546846 | Planer having a convertible hood assembly | 07/17/2007 |
| D534557 | Blast cabinet | 01/02/2007 |
| D530728 | Grinding machine | 10/24/2006 |
| D527030 | Sander machine | 08/22/2006 |
| D525994 | Planer | 08/01/2006 |
| 7051290 | Graphical interface for receiving eyeglass prescription information A high volume lens curing system is described. The high volume lens curing system is configured to cure multiple eyeglass lenses in a continuous manner. The lens curing system includes a computer-implemented method configured to collect prescription information, sav... | 05/23/2006 |
| 7033247 | Electric sharpener The invention relates an electric sharpener, comprises a main frame, a main shaft, a motor, a transmission wheel, a grinding stone, and an electric control circuit. The motor is mounted on an angular frame which in turn is mounted on the main frame. The transmission... | 04/25/2006 |
| D510368 | Optical connector end-face polishing machine | 10/04/2005 |
| D505683 | Grinding machine | 05/31/2005 |
| D502472 | Portions of a planer | 03/01/2005 |
| D496946 | Planing machine | 10/05/2004 |
| D492329 | Jewelry polisher | 06/29/2004 |
| D488173 | Planer | 04/06/2004 |
| 5168656 | Belt/disc sander with quick release and locking means for swingable bed A quick release for enabling a belt bed in a belt sander to be selectively rotated 90° from the horizontal to the vertical in a simple manner. A C-shaped collar forms a portion of the frame and a support is attached to the belt bed and positioned within ... | 12/08/1992 |
| 5165203 | Belt-grinding machine A belt-grinding machine includes an upper roller having two aligned eccentric shafts extending from its two ends, a mounting shaft pivoted to one of said eccentric shafts, a lower roller, and an abrasive belt passing over the rollers. A belt loosening uni... | 11/24/1992 |
| 4996797 | Apparatus for sharpening edge tools Apparatus for sharpening an edge tool comprises a rotary grindstone mounted so as to be rotatable about a first axis of rotation, and a tool mount for a tool to be sharpened, in which the tool mount is turnable about an axis whereby to permit the edge too... | 03/05/1991 |
| 4924633 | Apparatus for use with stationary belt sander station A manually adjustable combined edge and end fence for a belt sander comprises a first sanding fence member coupled to a second sanding fence member extending transversely, and preferably orthogonally, to the first fence member. The second fence member als... | 05/15/1990 |
| 4768309 | K-Land grinder An abrading apparatus for forming a chamfer of precise dimension along the cutting edge of a cutting tool, having a tool guide with first and second perpendicularly intersecting supporting surfaces with a slot formed in the tool guide to accommodate the p... | 09/06/1988 |
| 4760672 | Simultaneously grinding and polishing preforms for optical lenses An optical surface on a glass preform for an optical lens is simultaneously ground and polished. A glass blank is rotated by a work spindle mounted in an air bearing. A resin bonded diamond cutting ring is rotated by a tool spindle mounted in an air beari... | 08/02/1988 |
| 4736475 | Abrading machine for disk shaped surfaces A surface finishing apparatus for disks and the like characterized by an eccentric spindle of small diameter engaging the inner circumference of a disk; a drive mechanism engaging the outer circumference of the disk to rotate the disk around an axis paral... | 04/12/1988 |
| 4737053 | Automatic machine for shaping the external profile of spectacle lenses The invention relates to an automatic machine for shaping spectacle lenses, especially those in shatterproof material, with a bevel that serves to hold the lens in the frame. Lenses are copied from a pattern by three cutters which correspond to the three ... | 04/12/1988 |
| 4732056 | Saw chain grinding machine A saw chain grinding machine (10) is provided for sharpening a cutter link (56) of a saw chain (24). A grinding wheel (20) is swingable into position for grinding. A chain carriage (48) then brings the cutter link (56) into engagement with the grinding wh... | 03/22/1988 |
| 4729192 | Machining apparatus and workpiece holding assembly therefor A workpiece holding assembly is operable in combination with a machining apparatus, such as a grinding or milling machine, for presenting a workpiece to a cutting tool of the machining apparatus in various different angular positions in order to adapt the... | 03/08/1988 |
| 4707944 | Apparatus for honing a cylinder An apparatus for honing large, long, horizontally-oriented cylinders employs an elongate support beam, extending axially through the cylinder, to support a non-rotating honing head for axial movement within the cylinder. The honing head includes three hon... | 11/24/1987 |
| 4680893 | Apparatus for polishing semiconductor wafers An apparatus for polishing semiconductor material is described in which a movable polishing arm is mounted to a cabinet. Connected to the polishing arm is a workpiece holder or sometimes referred to as a wafer chuck. Adjacent to the polishing arm is a loa... | 07/21/1987 |
| 4646475 | Abrasive belt surface grinder and method An abrasive grinding machine and method which includes and endless power driven grinding belt mounted on a frame of the machine and a movable workholder on the frame adapted for holding workpieces to be surface ground by the endless grinding belt. A recip... | 03/03/1987 |
