Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 5653171 | Tumbleable capsule structure for downward-ramp races Disclosed are improved, unpredictably tumbleable capsule structures that are loosely internally provided with weighty rollable spherical ball, whereby such improved capsule is adapted to unpredictably compete with identical tumbleable capsule structures a... | 08/05/1997 |
| 4272093 | Self-propelled rolling toy A self-propelled rolling toy adapted to contain a child therein and rollable from one point to another, the toy including a seat, and a restraint for holding the child in fixed position in the toy while the child controls movement of the toy. Optionally, ... | 06/09/1981 |
| 4251949 | Toy track and bowl with car height indicator A toy racing apparatus including an inclined section of track and a bowl. The track enters the bowl through an opening in the lower sidewall where its surface is tangent to the interior wall. A vehicle placed at the upper end of the track will speed down ... | 02/24/1981 |
