Railway sleeper and railway-sleeper manufacturing method
US10704204B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2015 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | Apr 23, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention describes a railroad sleeper (1) for fixation of at least a pair of rails (2,2′) of a railroad network, comprising 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 comprising 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). The present invention further describes 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.