Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7328659 | Rail road freight car with resilient suspension An auto rack rail road freight car is provided for carrying low density, relatively high value, relatively fragile lading. The car has a relatively soft suspension and an empty vertical bounce natural frequency of less than 2.0 Hz. The car also has additional ballas... | 02/12/2008 |
| 7325499 | Constant contact side bearing assembly for a railcar A constant contact side bearing assembly configured for insertion into a walled receptacle provided on an upper surface of a railcar bolster. The side bearing assembly includes a housing assembly including a base and cap receivable within the open top walled recepta... | 02/05/2008 |
| 7198406 | Thrust sliding bearing A thrust sliding bearing includes an upper casing having a polyacetal resin-made flat annular surface and a lower casing superposed on the upper casing so as to be rotatable about an axis of the upper casing and having a polyacetal resin-made annular surface opposin... | 04/03/2007 |
| 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 |
| 6792874 | Railroad car center plate assembly conductive liner A self-lubricating center plate assembly liner for placement between a car body center plate and a truck bolster bowl of a center plate assembly in a railroad car, wherein the liner is configured to substantially mate with the center plates and includes a body havin... | 09/21/2004 |
| 6041714 | Statically dissipative, non-metallic center bowl liner for railroad cars A conductive center bearing liner for railroad car center plate assemblies comprising a bowl shaped or flat round horizontal member formed from a cross-linked ultra high molecular weight polymer specially mixed with a conductive material shaped to define ... | 03/28/2000 |
| 5908001 | Center plate assembly bearing liner A self-lubricating plastic center plate assembly bearing liner for placement between a body bolster center plate and a truck bolster center plate of a center plate assembly in a railroad car, wherein the liner is configured to substantially mate with the ... | 06/01/1999 |
| 5558025 | Combination wear and lubricating liner assembly for railway car truck bolster bowl A wear and lubricating liner has a cup-shaped wear liner assembly which includes a first bottom plate portion. An aperture is formed centrally through such first bottom plate and a first upstanding wall portion is connected at a bottom thereof to an outer... | 09/24/1996 |
| 4565134 | Cylindrical surface railcar center plate A railway car center plate formed with a convex cylindrical lower surface which bears, in rocking fashion, upon the flat load supporting face of a standard truck bolster bowl. The arrangement may have one or more side bearings with elastomeric material or... | 01/21/1986 |
| 4483254 | Center plate structure for railway vehicle A center plate structure for a railway vehicle is provided which utilizes a polymeric wear-resistant tubular liner disposed in sandwiched relation between a cylindrical outside surface of a center plate of the body of the railway vehicle and a cylindrical... | 11/20/1984 |
| 4452148 | Cushioned center plate structure for a railway vehicle body and method of making same A cushioned center plate structure for a railway vehicle body and method of making same are provided wherein such structure comprises, a substantially cylindrical disc-like component which is adapted to be received within the confines of an upstanding per... | 06/05/1984 |
| 4407043 | Under carriages for sliding doors having symmetrical weight distribution This invention relates to under carriages for supporting and displacing heavyweight sliding doors. Two spaced carriages 10 and 11 are arranged to run on a trackrail 6 which is cemented into the ground. Each of the carriages comprises two track wheels 19 a... | 10/04/1983 |
| 4308801 | Reinforced center bearing liner A wear-resistant liner for center plate structure of a railway vehicle is provided and such liner is defined by an ultra high molecular weight polymeric material having metal reinforcing means embedded in and surrounded by the polymeric material which ser... | 01/05/1982 |
| 4307669 | Lubrication retaining bearing For use in a railway car truck, a lubrication retaining shim bearing is arranged to be inserted between the railway car center plate and its associated center bowl on the truck bolster. The bearing includes an upper shim for engaging the railway car cente... | 12/29/1981 |
| 4289077 | Railway center bearing wear liner A cup-shaped wear resistant liner for a center plate structure of a railway vehicle is provided wherein such liner is defined by a planar disc-like bottom portion adjoined by a peripheral flange portion extending from the periphery of the bottom portion w... | 09/15/1981 |
| 4245564 | Center bearing socket construction A bearing socket for the pin connection of trucks to the body of rail vehicles comprises an upwardly opening cup-shaped lower part having a pivot pin receiving bore for the path of the pivot pin. An upwardly opening cup-shaped insert of resilient material... | 01/20/1981 |
| 4241667 | Grounded railway center plate liner A grounding arrangement for railroad car center plate assembly bowl liners of the all polymeric type in which the liner is equipped with a grounding device formed from a strip of beryllium copper to define a generally U shaped contact spring having a lowe... | 12/30/1980 |
| 4237792 | Reinforced liner for center plate structure of a railway vehicle A wear-resistant reinforced liner for a center plate structure of a railway vehicle is provided wherein the liner is defined of a polymeric matrix and has top and bottom surfaces adapted to engage railway members, the liner having dual-purpose means embed... | 12/09/1980 |
| 4224876 | Cup-shaped bolster bearing A bolster bearing having a flat bottom wall and an annular sidewall is disposed in the bolster bowl of a truck bolster, a radially extending annular flange on the bearing sidewall overlying an upper surface of the upstanding rim of the truck bolster defin... | 09/30/1980 |
| 4174140 | Resilient center plane assembly In railway car center plate swivel connections, horizontal and vertical loads are distributed more evenly along the bearing surfaces when the body center plate assembly includes an annular, elastomeric pad having horizontal and vertical bearing surfaces, ... | 11/13/1979 |
| 3986752 | Resilient center bearing assembly A railway car center plate assembly comprising a truck bolster having a bowl-shaped truck center plate and a body bolster having secured to its underside a body center plate. The body center plate has a flat surface from which extend downwardly two substa... | 10/19/1976 |
| 3944298 | Truck bolster center bowl wear plate This invention relates to a replaceable plastic wear member which is disposed within the center bowl of a railway vehicle truck bolster and interposed between the bottom of the center bowl and a vehicle body bolster center plate that extends from the bott... | 03/16/1976 |
