Did You Know...
...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.
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| Number | Title | Issue Date |
| 6962114 | Dropped deck center beam rail road car A center beam car has a main deck structure extending laterally from a main center sill, a laterally extending top truss structure, and a central vertically oriented web work structure for carrying vertical shear loads between the top truss and the center sill and d... | 11/08/2005 |
| 6915746 | Center plate assembly for a rail road car A railroad car body has a longitudinally extending center sill, and a main bolster extending transversely relative to the center sill. A center plate is mounted under the center sill at the intersection of the center sill and the main bolster. The center plate seats... | 07/12/2005 |
| 6354226 | Lightweight truck bolster having varying wall thickness ribs There is disclosed a light weight truck bolster for railway car trucks. Metal has been removed in the compression and tension members of the bolster near the center bowl. One longitudinal rib is located in each end of the bolster arms and a pair of transv... | 03/12/2002 |
| 6220177 | Bogie for railway vehicle and process for manufacturing same A bogie for a railway vehicle which is supported on wheels mounted on at least two axles wherein the bogie includes a chassis which includes at least one housing in the form of a tubular beam which receives a side member which connects the at least two ax... | 04/24/2001 |
| 6213027 | Railway vehicle bogie made of composite material and process for manufacturing such a bogie A railway vehicle bogie made of composite material which includes at least one elongated rigid support secured in a chassis made of composite material. The support is adapted to removably receive fasteners for mounting functional elements of the bogie at ... | 04/10/2001 |
| 6089166 | Bolsters for railway trucks An improvement in cast metal bolsters for railway trucks is disclosed. The bolster has a top wall, a bottom wall and sidewalls. All of the walls have interior and exterior surfaces. Two transverse ribs extend between the top wall and bottom wall and two s... | 07/18/2000 |
| 5327837 | Bolster of a railroad car truck with varying cross-sectional shape to provide less torsional rigidity at ends A bolster for a railroad car truck is described as having a generally hollow, box-like construction between its opposing ends which are transformed into I-shaped sections which are rigidly secured to the sideframes. The box-like frame provides the stiffne... | 07/12/1994 |
| 5241913 | Reinforced bolster for a railroad car truck A bolster of a railroad car truck is shallow and has a unique reinforcement rib which extends longitudinally of the bolster between a pair of stops which are designed to engage adjacent abutments which are carried by a transom to limit relative axial move... | 09/07/1993 |
| 5111753 | Light weight fatigue resistant railcar truck bolster A light weight fatigue resistant cast steel bolster for a freight railcar truck without any opening in the bolster bottom wall having internal risers connected to the bottom wall at bend points and with a ratio of metal in the top and bottom walls that le... | 05/12/1992 |
| 4342266 | Railroad car truck bolster A bolster for use in a railroad car truck has spring seat areas at the outer ends and a generally central section intermediate the spring seat areas and generally of substantially greater depth than the spring seat areas. A vertical reinforcing rib extend... | 08/03/1982 |
| 4196672 | Reinforced bolster A railroad car truck bolster has a centrally disposed vertically arranged longitudinally extending web. The web has spaced reinforcing means with the spacing of the reinforcing means being sufficient to cause certain fractures in the web propagating along... | 04/08/1980 |
| 4144819 | Truck bolster Railway rolling-stock truck bolster or cross-member provided with a bearing for receiving the vertical pintle of the vehicle, wherein at least one of a first pair of front and rear sectors of the upper edge of the bearing, facing the front and rear end of... | 03/20/1979 |
| 4135833 | Railway bolster lug Bolster re-enforcement systems, applicable both to new and existing bolster designs, provide for pre-stressing the bottom bolster center plate region utilizing lugs transmitting tension forces in opposition to the stress pattern applied to the center regi... | 01/23/1979 |
| 4114540 | Railway truck bolster A bolster for a railway car truck having an obstacle-free cavity located below a center plate so as to more readily accommodate truck linkage members, brake apparatus and other associated mechanical components. The obstacle-free cavity is defined by a top... | 09/19/1978 |
