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 |
| 6419472 | Gear unit for a deep-borehole pump The gear unit for a delivery pump installed in a deep borehole has a toothed gear unit with a pinion located on input shaft (2) and a gear wheel engaged with the pinion, which gear wheel is located on a vertical output shaft (5) driving the delivery pump.... | 07/16/2002 |
