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.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7368838 | High efficiency voice coil motor Methods and apparatus for increasing the efficiency of a voice coil motor (VCM) are disclosed. According to one aspect of the present invention, a cylindrical and radially symmetric VCM includes a plurality of sets of magnets, and a single coil. The plurality of set... | 05/06/2008 |
| 5615618 | Orbital and modular motors using permanent magnets and interleaved iron or steel magnetically permeable members A rotating device such as an orbital motor has a stator which includes a pair of opposed, generally annular magnetic units each comprising a plurality of groups of permanent magnets such as ceramic or ferrous magnets arranged in a side-by-side relationshi... | 04/01/1997 |
| 5202599 | Electric motor An electric motor has a stator comprising a plurality of permanent magnets disposed on an interior surface of the stator and an armature comprising a plurality of pole segments equally spaced apart on a shaft. Each pole segment is wound with a coil, which... | 04/13/1993 |
| 5086442 | Magnetic coupling for a rotating X-ray tube A magnetic coupling for a device, such as a cathode, which is received in a vacuum bulb of a tube which has shafts for mounting the tube for rotation on an axis, has an inner ferromagnetic part disposed in the vacuum bulb and connected to the device and a... | 02/04/1992 |
| 4628220 | Motor arrangement comprising at least three co-planar conical motors A compact motor arrangement having at least three equi-angularly-spaced motors having coplanar rotational axes intersecting at a common point. Each motor has an exterior shape of a frustrum of a cone, and a conical air gap, the exterior surfaces of adjoin... | 12/09/1986 |
