Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 5462568 | Stone polishing composition A universal stone polishing composition which includes an abrasive constituent and a composition which is a source of Group Ia or Group IIa metal ions when mixed with water.... | 10/31/1995 |
| 5433652 | Glass sheet partial chamfering machine The present invention discloses a glass sheet chamfering machine which is improved such that it is suitable for a partial chamfering for a glass sheet. In the conventional glass sheet chamfering machine, and in carrying out a partial chamfering with this ... | 07/18/1995 |
| 5421768 | Abrasive cloth dresser An abrasive cloth dresser which can efficiently remove reaction products soaked into abrasive cloths for polishing semiconductor wafers etc. without scattering the reaction products. The abrasive cloth dresser includes a rotating hollow arm shaft 7, a hig... | 06/06/1995 |
| 5367834 | Edge grinding apparatus An apparatus for successively grinding the edges of a series of like, sheetlike articles, such as glass sheets, and especially irregularly shaped glass articles such as automotive windows. The apparatus includes a frame, a table rotatably secured to the f... | 11/29/1994 |
| 5210977 | Drill grinding device In a drill grinding device with a grinding surface (7) disposed around a center axis (1), providing a conical grinding surface (8), a drill guide piece (11, 12) opposite the grinding surface with guide channels (13) which are parallel to the center axis f... | 05/18/1993 |
| 5205082 | Wafer polisher head having floating retainer ring A polishing head for polishing a semiconductor wafer is described. The head design enables a wafer retainer to float during polishing and yet extend beyond a wafer carrier to define a pocket for the wafer and thereby facilitate wafer changing. The head co... | 04/27/1993 |
| 5131190 | Lapping machine and non-constant pitch grooved bed therefor A lapping machine having a lapping bed adapted to rotate about a main axis and having an annular lapping surface delimited by an inner circle and an outer circle and into which is cut a spiral groove. Virtually all of at least one confinement ring faces t... | 07/21/1992 |
| 5123218 | Circumferential pattern finishing method A disc finishing method using a machine comprising an annular upper platen, lower platen, a center driving ring, a plurality of a clamping guide rollers, a plurality of stationary guide rollers, a clamping guide roller, and stationary guide roller perpend... | 06/23/1992 |
| 5102099 | Disc polisher apparatus A disc polisher apparatus for the abrasive removal of surface scratches from a laser scanned digitally encoded storage disc, such that the presence of surface scratches could otherwise serve to deflect the optical scanning of the disc so as to impair the ... | 04/07/1992 |
| 5085009 | Carrier for supporting workpiece to be polished A carrier for supporting workpieces to be polished is composed of an integrated mica laminated sheet. The mica laminated sheet is impregnated with a thermo-setting resin. The carrier has a low warp ratio and can be made thin with a sufficient mechanical s... | 02/04/1992 |
| 5070653 | Centerless valve regrinder A centerless valve regrinder for resurfacing a worn valve having a face, a tulip connected to the face, a valve stem connected to the tulip, the stem having an axis, a first notch worn into the stem at a location spaced from the tulip, and a second notch ... | 12/10/1991 |
| 4930262 | Control system for surface grinding of like workpiece blanks In the control process for surface grinding a measuring sensor of a stationary electronic measuring unit with a memory determines the actual heights of a group of workpiece blanks in a precision grinding machine on workpiece mounts on a switchable spindle... | 06/05/1990 |
| 4856231 | Machine for grinding large balls A machine for grinding large balls, in particular of natural or artificial stone, comprises a dish-shaped grinding tool and an arrangement for moving a ball blank in the grinding tool; the grinding tool is arranged vertically above the ball blank which is... | 08/15/1989 |
| 4839993 | Polishing machine for ferrule of optical fiber connector A polishing machine for polishing the end faces of ferrules supporting coaxially aligned optical fibers to be connected in an optical fiber connector. The machine has a polishing disk composed of a rotating disk with a flat face, a rubber plate fixed on t... | 06/20/1989 |
| 4771578 | Apparatus for the grinding or polishing of workpieces In an apparatus for the grinding or polishing of workpieces, particularly metallographic samples, the grinding or polishing pressure is transmitted to the workpiece through a deformable transmission link which is strained by strain gauges of an activating... | 09/20/1988 |
| 4707946 | Grinding machine A grinding machine that can continuously grind a rod-like object rotating around its axis supported by a head and a tailstock. Grinding tools are attached to a rotating circular plate which is provided on a carriage that moves along a bed adjacent the axi... | 11/24/1987 |
| 4665659 | Grinder for grinding an end surface of a cylindrical workpiece A cylindrical workpiece has an end face ground on two synchronously driven supporting rollers, by a grinding tool mounted on a drive shaft in front of the supporting rollers, and a loading mechanism and an unloading mechanism. The loading mechanism and th... | 05/19/1987 |
| 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 |
| 4512113 | Workpiece holder for polishing operation The workholder includes a carrier to which a flat perforated template is removably secured. An insert is removably mounted in each hole and removably supports a silicon wafer to facilitate polishing the wafer.... | 04/23/1985 |
| 4428160 | Centerless valve grinding There is provided a valve grinding apparatus for centerless grinding of valves. Two base rollers with parallel axes are driven, and a control roller is centered above the base rollers. The control roller can be raised and lowered and the direction of its ... | 01/31/1984 |
| 3971164 | Bowling ball resurfacing machine A machine for removing excess filling material and refinishing the surface to a true sphere after one or more of the finger holes in a bowling ball have been filled in. The machine frame carries a motor-driven sanding disc and a pair of ways. Slidable on ... | 07/27/1976 |
