US 12,071,732 B2
Railway sleepers and methods thereof
Aldo Marconi Wessen Machado, São Paulo (BR); Jesus Waldemar Golçalves da Silva, São Paulo (BR); Renato Teixeira Vargas, São Paulo (BR); and Walter Vidon Junior, São Paulo (BR)
Assigned to Braskem S.A., Camaçari (BR)
Filed by Braskem S.A., Camaçari (BR)
Filed on May 26, 2020, as Appl. No. 16/883,699.
Claims priority of provisional application 62/852,873, filed on May 24, 2019.
Prior Publication US 2020/0370247 A1, Nov. 26, 2020
Int. Cl. E01B 3/44 (2006.01)
CPC E01B 3/44 (2013.01) 19 Claims
OG exemplary drawing
 
1. A railroad sleeper for fixation of at least one pair of rails of a railroad network, the railroad sleeper comprising:
a contact surface having an upper surface, wherein each rail of the pair of rails is fixed thereto and spaced apart from each other, and a lower surface;
anchorage walls extending downward from the contact surface, and having a support point at a bottom surface thereof, each anchorage wall having at least one aperture extending for a partial height of the anchorage wall along a longitudinal plane of the anchorage wall,
wherein the at least one aperture is wholly within, and bounded by, the anchorage wall; and
a void delimited by the contact lower surface and the anchorage walls.