Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 5918652 | Router bit positioning mechanism A mechanism that attaches to a plunge router, particularly when the router is used in a router table, to conveniently and accurately move the router body relative to the router base in order to adjust the position of a router bit in the router relative to... | 07/06/1999 |
| 5480271 | Adjustable die head An adjustable die assembly having a ring structure with a clear central aperture for locating the ring structure along an axial length of a rod to have threads repaired or cut, and having a plurality of thread cutting chaser inserts connected to tool bloc... | 01/02/1996 |
| 4592399 | Rotary cutter assembly A rotary cutter assembly for cutting or milling the edge of a workpiece which is formed of layers of different materials. The rotary cutter assembly comprises a first cutter head and a separate second cutter head disposed in mutual coaxial relationship. T... | 06/03/1986 |
