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!
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| Number | Title | Issue Date |
| 6949055 | Machine tool A machine tool consists in a pair of slide ways set apart one from another and extending parallel with a longitudinal axis, a machining station between the slide ways, presenting a first zone and a second zone adjacent one to the other, and a traveling gantry set in... | 09/27/2005 |
| 5274562 | Numerical control unit for facilitating tool change A "safe" position for a tool changing operation in a numerically controlled machine tool is determined based on specific tool size and machining location. In one embodiment, tool change positions are taught in a teaching operation, and are stored for futu... | 12/28/1993 |
| 5097587 | Numerically controlled machine tool with automatic tool exchange device and indexing device The numerically controlled machine tool provided with an automatic tool exchange device and a work indexing device. After the spindle head completely retreats, the preparation for the next tool, the exchange of the tools or the change of the machined surf... | 03/24/1992 |
| 4581810 | Method and apparatus for controlling tool magazines A tool magazine is divided into four regions respectively containing substantially the same number of tool pots. When a designated tool is contained in a first or fourth region the magazine is rotated in the clockwise direction to index the designated too... | 04/15/1986 |
| 4426763 | Tool changer A tool changer for a milling machine comprising a tool store, twin claw tool changer and microprocessor controller. Tool hangers in the tool store are mounted to an orbiting chain. The chain is driven by a servomotor to advance a tool hanger to the ready ... | 01/24/1984 |
| 4107589 | Automatic tool change apparatus In an automatic tool change apparatus, numbers of tools stored in respective tool holding devices mounted on a magazine and held in a spindle are identifiable whether the tools are large or small ones. A combination of a tool held in the spindle and a too... | 08/15/1978 |
