Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7226255 | Five-simultaneously-working-axis computerized numerical controlled tooth cutting machine tool for plane enveloping toroidal worms The present invention provides a five-simultaneously-working axis computerized numerical controlling system tooth cutting machine tool for toroidal worms, comprising two parts a body of the machine tool and a controlling cabinet. The body comprises a bed, a spindle ... | 06/05/2007 |
| 7093334 | Machining unit with orientable spindle-axis for milling and boring operations A machining unit has a spindle-carrier structure, which can be oriented around a vertical axis. ... | 08/22/2006 |
| 6050755 | Apparatus for chamfering and deburring gear tooth end edges Apparatus for chamfering and deburring the tooth end edges of straight and skew-teeth gears, comprising at least one deburring wheel arranged endways with respect to the work and meshing with it in finishing the tooth edges, comprising a toothed guide gea... | 04/18/2000 |
| 5899645 | Machine tool for bevelling of tooth flanks of a gear The invention concerns a machine tool for the bovelling of a gear, in which two topfaces are simultaneously milled, with a rotationally driven workpiece carrier and two rotationally driven mounting spindles (13) which can be placed on the workpiece in an ... | 05/04/1999 |
| 5882154 | Gear finishing apparatus with a helix compensation A gear finishing apparatus with helix compensation is disclosed, in which a helical gear is supported and rotated on a table by a gear holder and a tail stock, a finishing wheel is supported and rotated on a slider that can move toward and away from the f... | 03/16/1999 |
| 5052865 | Deburring apparatus An apparatus for deburring radial end surfaces of axially oriented splines abutting annular grooves formed in workpieces such as mainshaft gears. The apparatus includes an axially oriented reference body and a splined workpiece support member rotatably mo... | 10/01/1991 |
| 4926102 | Involute interpolation method An involute interpolation method for machining operations is used in a numerical control apparatus. A rotational direction (G03.1) of an involute curve, an incremental distance along the involute curve or an incremental angle, a center position (X0 | 05/15/1990 |
| 4726720 | Method of milling teeth surfaces from the free end of a workpiece A method of milling, with at least one milling cutter, teeth surfaces at an axial free end of a continuously rotatably driven workpiece comprising the steps of cutting the teeth on the continuously driven workpiece with axial relative movement between the... | 02/23/1988 |
| 4717293 | Method for chamfering the axially facing ends of toothed workpieces, a meshing engagement aid manufactured according to this method, and an apparatus for performing the method A method and an apparatus for the chamfering of the axially facing ends of toothed cylindrical or conical workpieces in which a cutting tool arranged on a rocking lever is moved back and forth in response to the peripheral speed of the workpiece which con... | 01/05/1988 |
| 4548531 | Method for chamfering the edges of gear teeth The ends of gear teeth are chamfered using an arcuate motion cutter having a complex cross sectional shape. In an improvement of the prior trial and error techniques, the cutter shape is made correctly the first time using an algorithm which includes dete... | 10/22/1985 |
| 4479294 | Secondary working apparatus A secondary working apparatus for secondarily machining a blank preliminarily formed with internal serrations, splines or teeth on a cylindrical plane, comprising a stationary housing structure, support means for supporting the blank with the center axis ... | 10/30/1984 |
| 4334810 | Gear deburring apparatus and method In an apparatus for the cutting, deburring or breaking of the side tooth edges of gears with one or two tools which are located on the side of a guide gear and which machine the aforesaid tooth edges. The guide gear meshes with the workpiece, and, in one ... | 06/15/1982 |
| 4303359 | Deburring apparatus A deburring apparatus is provided for automatically deburring gears having a plurality of external or internal extending teeth formed therealong at predetermined intervals from each other. The apparatus comprises a frame having a spindle on which the gear... | 12/01/1981 |
