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| Number | Title | Issue Date |
| 4408810 | Resilient side bearing A constant contact resilient side bearing adapted to be positioned on a railroad car truck bolster and in constant contact with the underside of the car body for retarding movement of the car truck relative to the car body includes a housing adapted to be... | 10/11/1983 |
| 4239100 | Package flow system A roller assembly having longitudinal ribs which snap fit into shelf members of a support frame. In one embodiment the shelf members have upright T-shaped end members with lateral extending feet that engage the ribs. In another embodiment the shelf member... | 12/16/1980 |
| 3957318 | Elastomeric railway truck side bearing A railway truck side bearing and more particularly an improved side bearing utilizing elastomeric means and intermediate thereof a cylindrical rolled steel bearing means to control railway freight vehicle hunting.... | 05/18/1976 |