Famous Patents
Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 6935667 | Wheels for a wheeled vehicle A wheel assembly for a wheeled vehicle utilizes interchangeable wheel hubs to secure various types of tires to provide better performance and maintenance on the vehicles. The design of the hubs is such that fabrication costs are reduced as well as costs for maintain... | 08/30/2005 |
| 6227591 | Dual alloy railroad wheel A railroad wheel formed from at least two metallic alloys. In one embodiment, a railroad wheel has a body formed from a first alloy and a rim formed from a second alloy initially in powder form. In an exemplary embodiment, to form the dual alloy wheel the... | 05/08/2001 |
| 4863207 | Disc wheel, particularly for rail vehicles A disc wheel, particularly for rail vehicles, with a composite metal/plastic structure. In order to make possible simple manufacture with at the same time adequate force transmission, a structure between the hub and the tread comprises a plastic structure... | 09/05/1989 |
| 4420179 | Railway car wheel A wheel for rail vehicles with at least one disc which is connected to an axle, and with a wheel rim having a tread or surface surrounding the disc, while the rail tread in engagement with the rim tread results in contacting points of the wheel during str... | 12/13/1983 |
| 4358148 | Damped railway wheel A vibration damping assembly for a wheel or the like that undergoes rotation is achieved by providing an annular groove in a surface of the wheel coaxial with the wheel axis. An annular metal ring formed from a channel member generally U-shaped in cross-s... | 11/09/1982 |
| 4318564 | Railway car wheel A wheel for rail vehicles with at least one disc which is connected to an axle, and with a wheel rim having a tread or surface surrounding the disc, while the rail tread in engagement with the rim tread results in contacting points of the wheel during str... | 03/09/1982 |
| 4200326 | Reinforced railway wheels and axles An axle and wheel assembly particularly adapted for railcar usage is disclosed as having a metal-foam construction that is light in weight but of a relatively high strength. The axle includes an elongated hollow steel outer axle member and an elongated ho... | 04/29/1980 |
| 4183572 | Railway flanged wheel vibration dampening assembly The present noise damping apparatus is especially intended for damping the noise caused by wheels running on rails. For this purpose there is provided a noise screen connected to at least one surface of the rail wheel in a force transmitting, yet removabl... | 01/15/1980 |
