Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 6585461 | Method of working diffraction optical grating element shape and method of working mold for molding diffraction optical grating element shape This invention aims at avoiding interference of a blade when a plurality of grooves of a diffraction grating element are formed. In order to achieve this object, in a method of working a diffraction optical grating element shape on a working target surfac... | 07/01/2003 |
| 5765976 | Method of controlling the normal direction of the main shaft of the numerical control machine tool A tool T is mounted to the tip of the rotatable main shaft S, and at least the rotation angle of the main shaft S is controlled so that the edge of the tool T is always maintained at the right angle against the direction of the tool movement on the machin... | 06/16/1998 |
| 5575598 | V-shaped groove forming machine and its control method A dedicated V-shaped groove forming machine comprises an X-axis slider dislosed over a plate material so as be movable in an X-axis (groove forming direction); a Z-axis slider supported by the X-axis slider so as to be movable in a Z-axis direction (verti... | 11/19/1996 |
| 4859126 | Apparatus and method for removing dross ridges from a metal workpiece An apparatus and method are disclosed for removing the dross ridges which are formed on the lower surface of a metal workpiece during torch cutting of the workpiece. The apparatus includes a cutting blade having a generally flat outer surface and a cuttin... | 08/22/1989 |
| 4728233 | Device and method for shaping an arcuate edge A shaping or cutting device for accurately and incrementally shaping the arcuate edges of the teeth of packing segments used as seals between turbine stage diaphragms. The device assures that the reshaped packing teeth provide uniform clearance by the sea... | 03/01/1988 |
| 4643057 | Cutting tools The invention provides a cutting tool for incising a helical cut around the internal surface of a hollow member comprising a tool carrier adapted for insertion into the hollow member adjacent the internal surface thereof to be cut; a cutting block carried... | 02/17/1987 |
| 4578006 | Impeller under file machine Apparatus for underfiling curvelinear vanes of cast centrifugal impellers. Such vanes are cast with generally uniform thickness along their length; it is desirable to have the vanes taper in thickness such that the radially outward portions are thinner th... | 03/25/1986 |
| 4382732 | Machining station for a production line for optical fiber cable elements A machining tool comprises an annular structure having the same number of teeth as there are grooves to be machined, arranged radially in the structure, each tooth carrying a pin engaged in a curved slot. It also comprises a locking device constituted by ... | 05/10/1983 |
| 4359303 | Plate-edge machining apparatus A plate-edge machining apparatus comprises a workbench for supporting a plate and a movable abutment for positioning the plate border to be machined in a machining position projecting beyond the workbench. The plate is retained by a movable plate holder. ... | 11/16/1982 |
