...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 |
| 8176853 | Amusement park ride using motion-driven positioning for 360-degree vehicle orientation An amusement park ride adapted for fully rotating a passenger compartment in response to vehicle motion along a guide track. The ride includes a vehicle chassis that engages the guide track and travels along the ride path during operation of the ride. The ride furth... | 05/15/2012 |
| 8141495 | Amusement park ride with vehicles pivoting about a common chassis to provide racing and other effects A ride system is provided that allows selective relative positioning of vehicles in an amusement or theme park ride to simulate racing or other effects. The ride system includes a chassis that is adapted to be supported by and to travel on or along a length of track... | 03/27/2012 |
| 8065963 | Fairground attraction having people carriers driftingly movable along a track A fairground attraction is disclosed, including a track, a number of people carriers and device connected to the people carriers for advancing thereof along the track. Each people carrier is connected to the advancing device for pivoting about its top axis and is su... | 11/29/2011 |
| 7921781 | Amusement park ride with vehicles pivoting about a common chassis to provide racing and other effects A ride system is provided that allows selective relative positioning of vehicles in an amusement or theme park ride to simulate racing or other effects. The ride system includes a chassis that is adapted to be supported by and to travel on or along a length of track... | 04/12/2011 |
| 6862997 | Amusement device and method for using an amusement device This invention relates to an amusement device and method for using an amusement device. The amusement device comprises a guideway being pivotable around a swivel axis, the axis being transverse to the guideway, and a bearing frame carrying, at a distance from the gr... | 03/08/2005 |
| 6220171 | Amusement ride A roller coaster includes a plurality of ride vehicles that ride along a track. Each vehicle provides seating for at least one passenger. The track is elevated off the ground and includes a variety of hills, curves, loops, rolls, drops, inversions and the... | 04/24/2001 |
| 5433153 | Amusement track ride system with helical spinning section having locking restraints and enhanced passenger view An amusement track ride system comprises a pair of rails forming a track including a spinning section. A car traveling along the rails includes a chassis, a passenger seat on the chassis, and a plurality of wheel portions situated close to the feet of a p... | 07/18/1995 |
| 5115744 | Extreme"G" accelerator amusement ride An amusement car ride is disclosed which propels a car along a first straight track section, a curved track section having 180 degrees of arc and a second straight track section, in that order. Movement of the car is provided by a d.c. motor under control... | 05/26/1992 |
| 4963515 | Lightweight hydrogel-bound aggregate shapes and process for producing same Hydrogel-bound aggregate lightweight building materials, such as blocks for use in replacement of lightweight concrete or extruded clay blocks, prepared by expanding and drying a foamable composition containing precursors for an alkali metal aluminosilica... | 10/16/1990 |
| 4246848 | Ski lift with swivel chair There are disclosed improvements in the passenger unit for a ski lift such as a chair and the like to incorporate a swivel mechanism in the standard which supports the lift chair from the traveling, overhead cable. The swivel mechanism includes a swivel a... | 01/27/1981 |
| 4170943 | Roller coaster assembly An improved roller coaster system is provided having a track in the shape of a mobius band and a carriage assembly mounted for movement thereon. Passenger seating means are provided which are rotated and translated in a multiplanar manner as the carriage ... | 10/16/1979 |