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 |
| 7739794 | Method for repair of rail wheels A method includes shrink fitting a ring member about a railroad wheel body and metallurically bonding the ring member to the railroad wheel body. A wheel assembly includes an inner portion obtained from a worn railroad wheel, a ring member disposed about the inner p... | 06/22/2010 |
| 6746064 | Composite wheel for tracked vehicles The present invention relates to a method of manufacturing an all metal, single or dual, flanged composite railroad wheel for rollingly engaging a metal rail. A unitary metal railroad wheel having at least one radially extending wheel flange, for intermittently enga... | 06/08/2004 |
| 6679535 | Safety wheel, method of manufacturing such a wheel and bogie equipped with such a wheel This invention relates to a safety wheel, for a subway coach bogie, or the like, running on pneumatic tires, adapted to be interposed between a chassis of the bogie and a corresponding tire, said wheel presenting an outer peripheral zone having a braking ... | 01/20/2004 |
| 6506266 | Tire or solid wheel for wheelsets of rail vehicles A composition for steel used for tires or solid wheels of rail vehicles, which composition provides improved properties, in terms of wear, crack susceptibility, ability to withstand thermal loads, homogenous microstructural properties and suitability for ... | 01/14/2003 |
| 6073346 | 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... | 06/13/2000 |
| 6033001 | Wheel for rolling stock and manufacturing method thereof A wheel for rolling stock in which when a deflection amount λ of a disk relative to a rim section is set to not less than 5 mm, a condition that a deflection amount δ of the rim section relative a boss section ࣙ40 mm is secured easily, an excellent du... | 03/07/2000 |
| 5129156 | Method for setting the axial end play of tapered roller bearings A motor support bearing assembly is provided for a live axle used in locomotives. A wheel is press fit on each end of the axle under high pressure, with a gear secured between the wheels adjacent the pinion end of the axle. The motor support bearing assem... | 07/14/1992 |
| 4680846 | Material saving method for truing track wheels Track wheels, especially railroad wheels, are trued in a material saving manner by first displacing material from zones of lesser wear to zones of higher wear on the wheel tread and/or on the wheel flange including the flank area of the flange, especially... | 07/21/1987 |
