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| Number | Title | Issue Date |
| 5104040 | Butt joint device Apparataus for butt joining hanging conveyor supports having a C-shaped rail section in which conveying hangers can travel back and forth along the rail section. The supports each have a hollow section above the rail section and trolley wires running alon... | 04/14/1992 |
| 5009168 | Track expander and method of use A track expanding device is employed in a conveyorized transport system to spread apart adjacently disposed sections of track thereby tensioning an endless chain travelling with these track sections. The expanding device comprises a splice and an expander... | 04/23/1991 |
| 4967669 | Track expander device for a conveyorized transport system A track expanding device is employed in a conveyorized transport system to spread apart adjacently disposed sections of track thereby tensioning an endless chain travelling with these track sections. The expanding device comprises a splice and an expander... | 11/06/1990 |
| 4580338 | Apparatus for positioning electrical insulators in making a railway rail-and-fastening assembly To position an electrical insulator, having first and second ends at which are first and second sideways-projecting lugs, so that a part of the insulator lies on the upper face of a rail flange, another part of the insulator lies between the rail flange a... | 04/08/1986 |
| 4289274 | Rail track A rail length and rail joint is described which avoids the use of bolts, the rail length comprising basically a fastening element secured at each rail end to be joined, the element being provided with a through bore extending parallel to the longitudinal ... | 09/15/1981 |
