...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 |
| 8109003 | Pruning shears Pruning shears include a first arm including a first handle and a jaw including a first tab; a first blade including a cutting edge and an ear opposite the cutting edge and having a first through hole wherein the first arm and the first blade are secured together by... | 02/07/2012 |
| 7607231 | Folding multipurpose tool with shears and comfortable handles A multipurpose tool includes bypass shears with handles that fold around the shears into a compact configuration in which the blades of the shears are hidden. A sharp-edged cutter is removable from the shears for resharpening or replacement, in one version of the to... | 10/27/2009 |
| 7596870 | Folding multipurpose tool with shears and comfortable handles A multipurpose tool includes bypass shears with handles that fold around the shears into a compact configuration in which the blades of the shears are hidden. A sharp-edged cutter is removable from the shears for resharpening or replacement. A blade safety lock hold... | 10/06/2009 |
| 7246442 | Hair-trimming tool A hair-trimming tool including a tool body having a pair of hair-bunch supporting pieces whose tip ends can open and close, a connecting portion which connects base ends of the hair-bunch supporting pieces, a protruding portion protruding from the connecting portion... | 07/24/2007 |
| 6883239 | Hair trimming device A hair-trimming device is disclosed. The device comprises a substantially U-shaped member having a first handle portion and a second handle portion and an elastic portion alloy the first handle portion and the second handle portion to elastically separated; a pair o... | 04/26/2005 |
| 6625888 | Pruning device A pruning device includes a blade mounting jaw and an opposing jaw. A blade is removably mounted on a blade mounting portion of the blade mounting jaw to cut vegetation positioned between the jaws as the jaws are closed. A blade retainer is movable betwee... | 09/30/2003 |
| 6317987 | Scissor Disclosed is a scissor. The scissor comprises a pair of gripping sections integrally coupled with each other at one ends thereof; a pair of blade sections formed at the other ends of the pair of gripping sections, respectively; and a pair of safety plates... | 11/20/2001 |
| 5353505 | Grip scissors A pair of grip scissors comprises a generally U-shaped spring member integrally made of a resin and a pair of blade members attached to the respective free ends of the spring member. The respective free ends of the spring member are provided with an oppos... | 10/11/1994 |