Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7168899 | Apparatus and method for centering a workpiece on a machine tool An apparatus is provided for centering a workpiece on a machine tool that includes first and second guide plates having respective first and second aligned bores therein for supporting a centering pin mounted therein for axial movement between a retracted position a... | 01/30/2007 |
| 6120364 | Grinding fixture and assembly A grinding fixture that allows a variety of helical shapes to be ground upon a variety of cutting inserts. The grinding fixture includes a bottom sine base for varying a first angle. A shaft is rotatably attached to the bottom sine base for providing rota... | 09/19/2000 |
| 5807164 | Method and device for regrinding grooved tools The invention relates to a method and to a device for regrinding tools having straight or helical grooves with the help of a positioning head, which is provided with a feeler pin, which engages a groove and which, in the direction of advance, is disposed ... | 09/15/1998 |
| 5321912 | Mover reel blade relief grinding device A relief grinding device (100) is disclosed including a flange assembly (106) slideably mounted on and rotatable with a grinding shaft (18) which is mounted on the free ends of pivot arms (14) pivotally mounted to a table (12). A grinding wheel (108) is m... | 06/21/1994 |
| 5125186 | Drill grinding machine A drill grinding machine employs independent servo motors for drill rotation, drill lift, and drill feed. The three motors are connected through respective suitable drive mechanisms to a tubular spindle that is rotatably mounted within a work head. The wo... | 06/30/1992 |
| 5097634 | Tool grinder apparatus and method The present invention relates to a apparatus and method for sharpening rotary tools which includes a base for supporting a housing and a slidable table. The housing includes a motor which drives a grinding wheel located at the end of the drive shaft. A sl... | 03/24/1992 |
| 4916866 | End mill sharpener An end mill resharpening device is provided which will resharpen the primary and secondary cutting edges of both the flutes and the end of the mill. All of the proper side and end angles, as well as an end "fish-tail" angle are produced automatically by t... | 04/17/1990 |
| 4890419 | Device for grinding cutting tools having straight and spiral grooves A device for grinding cutting tools having straight and spiral grooves includes a workpiece or tool spindle which is rotatable in a housing and can be set in a combined turning and advancing motion. A roller capable of engaging the outer surface of the sp... | 01/02/1990 |
| 4546575 | Method for precision grinding of end mounted objects A tool (15) to be ground is mounted in a vertical position to the upper end of a vertically oriented piston (21). The lower end of the piston (21) is received into the open end of a cylinder (22). Radial fluid bearings (28, 29) are pressurized to permit r... | 10/15/1985 |
| 4497139 | Apparatus for precision grinding of end mounted objects A tool (15) to be ground is mounted in a vertical position to the upper end of a vertically oriented piston (21). The lower end of the piston (21) is received into the open end of a cylinder (22). Radial fluid bearings (28, 29) are pressurized to permit r... | 02/05/1985 |
| 4339894 | Convoluted shirring wheel An apparatus for shirring synthetic casings wherein there is superimposed on the customary helical shirring pattern another pattern which will change the folding or shirring pleat pattern of the casing from that of the customary continuous helix so as to ... | 07/20/1982 |
| 4163345 | Arrangement for the grinding of rotary profile cutters An arrangement for the grinding and cutting of rotary profile cutters having, in combination mounted on a base, a first reciprocable table on which is mounted a rotatable platen. A rotatable workpiece carrier assembly is fixed to the platen and these have... | 08/07/1979 |
| 4157635 | Grinding machine for grinding a helical groove in a workpiece of tapering axial section A grinding machine for grinding a helical groove in a workpiece of tapering axial section, to give a conical cutter, has means for rotating the workpiece at a varying rate as it is advanced towards the grinding wheel. The rotating means includes a pinion ... | 06/12/1979 |
