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Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 6216958 | Railway track and sleeper and gap-covering element therefor On a railway track comprising a ballast bed (10), sleepers (12) provided on the ballast bed and tracks (14) mounted on the sleepers, the sleepers are disposed closely adjoining one another but out of mutual contact, leaving a gap, the sleepers defining dr... | 04/17/2001 |
| 6158698 | Hollow tie switch assembly A hollow tie assembly for rodding associated with moveable trackwork (such as in a switch or a moveable point frog) serves the function of a tie, houses and protects throw rods, lock rods and detector rods, is adapted to accommodate North American switch ... | 12/12/2000 |
| 5314115 | Rail cross-tie for LIM transit system A rail tie has a pair of rail supporting portions disposed on opposite sides of a central portion. The central portion is elevated relative to the central portion and supports a reaction rail of a linear induction motor used to propel a vehicle along the ... | 05/24/1994 |
| 4448349 | Rail sleepers with rail clamping devices There is disclosed a rail sleeper which when secured to rails affords rapid disengagement when necessary and is comprised of a metal bar of a U-shaped channel section. At two locations along the length of the bar portions of flanges of the sleeper are rem... | 05/15/1984 |
| 4106696 | Sleeper of steel or similar material A sleeper for receiving and securing a pair of railway rails has openings for receiving the rails for screw-less mounting. Either one or both flanges of the rail foot is secured in the opening by cooperation with a lug of the sleeper. The lug or lugs may ... | 08/15/1978 |
| 4083491 | Synthetic railroad crosstie A railroad crosstie is constructed from at least two individually distinct rail support blocks interconnected by a web system which is fastened to the blocks and which comprises at least one self-supporting rigid sheet member adapted to be buried in the r... | 04/11/1978 |
| 4034913 | Composite railroad tie An improved railroad tie constructed of a metal sheath with angled walls braced longitudinally, vertically, and laterally and reinforced by a filling of concrete, the sheath structure being especially adapted for spring-type rail securing devices bridging... | 07/12/1977 |
