公开(公告)号：US20230250592A1

公开(公告)日：2023-08-10

申请号：US18299932

申请日：2023-04-13

申请人： Braskem S.A.

发明人： Guilherme Longa Nose ,  Daniel Wenzer Trevizan ,  Luiz Francisco Muniz da Silva ,  Jorge Luís Goudene Spada ,  Cláudio Pereira da Silva Zamith ,  Walter Vidon Júnior ,  Renato Teixeira Vargas

IPC分类号： E01B3/30 ,  E01B3/46 ,  E01B3/44

CPC分类号： E01B3/30 ,  E01B3/46 ,  E01B3/44

摘要： A railroad sleeper (1) for fixation of at least a pair of rails (2,2′) of a railroad network is provided, including a contact surface (3), wherein each rail of the pair of rails (2,2′) is fixed spaced apart from each other, the railroad sleeper (1) being configured by including a hollow sector (4) delimited by association of the contact surface (3) with the anchorage walls (5,5′), thus establishing a free portion (17) adjacent to the anchorage walls (5,5′) and opposite the contact surface (3). An embodiment in which the hollow sector (4) of the railroad sleeper is delimited by a support surface and the process of manufacturing a railroad sleeper is also provided.

公开(公告)号：US20230228041A1

公开(公告)日：2023-07-20

申请号：US18007874

申请日：2021-06-02

申请人： Braskem S.A.

发明人： Guilherme Longa Nose ,  Daniel Wenzer Trevizan ,  Luiz Francisco Muniz da Silva ,  Jorge Luís Goudene Spada ,  Cláudio Pereira da Silva Zamith ,  Walter Vidon Júnior ,  Renato Teixeira Vargas

IPC分类号： E01B3/46

CPC分类号： E01B3/46

摘要： It is described a railroad sleeper for fastening at least one pair of rails (2.2′) of 5 a railway network, the railroad sleeper (1) comprising a contact surface (3) on which each rail of the pair of rails (2.2′) is spaced fixed in relation to each other, the railway sleeper (1) comprising a hollow sector (4) delimited from the association of the contact surface (3) with anchorage walls (5.5′), thus establishing a free portion (17) adjacent to the anchorage walls (5,5′) and 10 opposite the contact surface (3), wherein the railroad sleeper (1, 1′) is manufactured from a composition comprising bending module greater than or equal to 5000 MPa.