...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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 |
| 7331419 | Dual-circuit steer-by-wire steering system comprising a common cradle The invention relates to a steer-by-wire steering system comprising a hydraulic control unit that acts on the steerable wheels (1, 20), the control unit having at least one cradle (4, 23), which is displaceably mounted on at least one guide rod (5, ... | 02/19/2008 |
| 7290637 | Hydraulic steering mechanism and driving-steering-wheel support mechanism The hydraulic steering mechanism according to the present invention includes an axle case, a first steering case, a second steering case, a first arm, a second arms, a third arm, a hydraulic actuator, and a tie rod. The first, second and third arms are provided to t... | 11/06/2007 |
| 7210553 | Steering apparatus An apparatus (10) for use in turning steerable vehicle wheels (12,14) includes a connector member (28) which connects a first end portion (70) of the rack (66) with a first steerable vehicle wheel (14). A second end portion ... | 05/01/2007 |
| 7182353 | Turn brake for multi-track vehicles A turn brake includes a cylinder assembly coupled to a conventional front-wheel steering system of a multi-track vehicle. The cylinder assembly generates fluid power for applying differential braking force to left and right wheels of the vehicle in response to turni... | 02/27/2007 |
| 7143853 | Roll-related reactive system A three-wheeled vehicle having a pair of front wheels and a single rear wheel is provided with a roll-related reactive system. The roll-related reactive system provides braking of at least one of the front wheels independent of braking initiated by an operator of th... | 12/05/2006 |
| 7083356 | Ball joint with angular movement restriction system A ball joint restriction system provides a cylindrical extension in the end of the ball, and also provides an oblong housing in the closing cover of the ball joint to restrict movement of the extension. A positioning member positions the cover with respect to the bo... | 08/01/2006 |
| 7077234 | Rack and pinion steering assembly A rack-and-pinion assembly comprises a housing, a rotatable pinion gear including a plurality of teeth, and at least one moveable mount for providing a moveable attachment of the housing to the vehicle. A rack is slidably positioned within the housing and includes a... | 07/18/2006 |
| 6868935 | Arrangement and method for operating self-steering wheels Method and arrangement for operating self-steering wheels on a non-driving axle (3) in a vehicle, which wheels (1, 2) are each mounted on their own stub axle (4, 5) and connected to a tie rod (8). The axle (3) and one (4) of... | 03/22/2005 |
| 6527078 | Steering system for rear wheels of a trailer A steering system for rear wheels of a trailer for more easily and precisely steering a back end of the trailer when the trailer is moving in a reverse direction. The steering system for rear wheels of a trailer includes a steering assembly mountable on t... | 03/04/2003 |
| 6510917 | Rear wheel steering apparatus A rear wheel steering apparatus for steering the rear wheels of a vehicle supported on a multi-link suspension includes a live axle and a track bar pivotally connecting the axle to a vehicle frame. Steering knuckles at opposite ends of the axle support ro... | 01/28/2003 |
| 6386310 | Steering device, especially for farming tractors and similar commercial vehicles A steering device comprises a rigid steering axle (12) pivotable about a substantially horizontal axis, the wheels (5) of which are driven by a cardan shaft (4) arranged between the steering axle and the transmission (2) the transmission being spaced apar... | 05/14/2002 |
| 6257602 | System and method for changing the steering angle of a rack and pinion steering system A device for reducing the steering angle of a rack and pinion steering system for motor vehicles, having a rack which is located between the tie-rods of the wheels to be steered, is connected to these tie-rods, is mounted displaceably in a housing and has... | 07/10/2001 |
| 5851015 | Rack and pinion steering system for four wheel drive vehicle A steering system (10) for a four wheel drive, live axle vehicle (12) includes a rack and pinion steering gear assembly (80) including an elongate rack (100) having a longitudinal axis (102) and extending axially through a rack housing (82). The rack (100... | 12/22/1998 |
| 5823288 | Controllable slide car A controllable slide car for controllably simulating oversteer and understeer conditions in a moving automobile. The controllable slide car comprises a rear steering linkage assembly that attaches to the rear wheel mounting assemblies of an automobile and... | 10/20/1998 |
| 5337851 | Steering mechanism for road cutter A steering mechanism for use on a pavement cutting machine or the like, the cutting machine having a pair of guide wheels which are coupled to the chassis of the machine through steering knuckles. The steering mechanism is operated by means of a fluidic a... | 08/16/1994 |
| 5251717 | Hydraulic rack and pinion steering assembly A hydraulic rack and pinion steering assembly for steering a pair of steerable vehicle wheels comprises a housing defining a passage, an elongate rack supported for longitudinal movement in opposite directions in the passage, and a pinion. The rack has op... | 10/12/1993 |
| 4600205 | Steering apparatus for motor vehicles A steerable control system for roadable vehicles includes an axle 16 having rotatably mounted wheels 14a and 14b upon the respective ends thereof. These wheels each include a king pin assembly 60 connected to the axle ends by a pair of king pins 76. Neste... | 07/15/1986 |
| 4475615 | Power steering system A power steering system for a vehicle of the type having an axle (12) which supports a pair of steerable wheels (24) at opposite ends of the axle, the steerable wheels being interconnected by a steering linkage which includes steering arms and a tie rod i... | 10/09/1984 |
| 4449600 | Mobile cranes or aerial lift platforms The invention relates to a mobile crane or aerial lift platform vehicle wherein at least one of the axles is extendable and wherein a cylindrical housing carries the extendable axle beam and a steering actuator is carried on at least one of the beams and ... | 05/22/1984 |
| 4269560 | Steering assembly A straddle carrier for heavy loads of the type which is driven over a load so that the load is generally beneath the carrier and straddled by the wheels of the carrier. The carrier includes a main frame which has a gripping tong mechanism integrally mount... | 05/26/1981 |
| 4120507 | Compensated extendable steering means for heavy machines Compensating cylinders are provided for pairs of transverse steering linkages connecting pairs of tractors that steer in unison on opposite sides of a main frame of a heavy construction machine whereby the steering linkages automatically extend and retrac... | 10/17/1978 |
| 4016949 | Hydrostatic load sensitive regenerative steering system A control valve operated by the steering wheel to selectively connect a variable displacement pump for operating a hydraulic cylinder in each of two directions to steer the vehicle. The hydrostatic system is regenerative in steering of the hydraulic cylin... | 04/12/1977 |
| 4016948 | Dual steering system for vehicle A vehicle having a vehicle chassis supported on wheels and a cab rotated about a vertical axis on the chassis is disclosed herein. A dual steering system is incorporated in the vehicle so that the vehicle can be operated through a hydrostatic steering sys... | 04/12/1977 |