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1. 发明申请

US20220275490A1 Spring Wire, Tension Clamp Formed Therefrom and Method for Manufacturing Such a Spring Wire 有权
公开(公告)号：US20220275490A1
公开(公告)日：2022-09-01
申请号：US17636964
申请日：2020-08-12
申请人： Vossloh Fastening Systems GmbH
发明人： Lei Hu , Dennis Wolf
IPC分类号： C22C38/26 , C22C38/02 , C22C38/24 , C22C38/06 , C22C38/04 , C22C38/00 , C21D8/06
摘要： A spring wire which can be cold formed well at diameters of at least 9 mm, but has improved mechanical properties. The spring wire is manufactured from a steel including, in % by weight, C: 0.35-0.42%, Si: 1.5-1.8%, Mn: 0.5-0.8%, Cr: 0.05-0.25%, Nb: 0.020-0.10%, V: 0.020-0.10%, N: 0.0040-0.0120%, Al: ≤0.03% and as the remainder iron and unavoidable impurities, wherein the total content of impurities is limited to at most 0.2% and the impurities include up to 0.025% P and up to 0.025% S. The spring wire is in particular suitable for the manufacture of a tension clamp with optimized usage properties. Also, a method which enables the practice-oriented production of the spring wire.

2. 发明申请

US20220106741A1 Guide Plate and Rail Attachment Point 有权
公开(公告)号：US20220106741A1
公开(公告)日：2022-04-07
申请号：US17275954
申请日：2019-09-09
申请人： Vossloh Fastening Systems GmbH
发明人： Dimitre Iliev
IPC分类号： E01B9/28
摘要： The invention relates to a guide plate for laterally guiding a rail in a rail attachment point formed on a railroad tie, wherein the guide plate has a top side having a support surface for supporting a spring element, an underside, by way of which the guide plate is supported on the railroad tie during use, a support segment having a support surface, by way of which the guide plate is supported, during use, on a shoulder provided on the railroad tie, and possesses a guide segment which is formed opposite to the support segment, and on which a guide surface is present, on which a rail is laterally guided during use. In order to counteract twisting of the rail and concomitantly the risk of the occurrence of track warping at high outdoor temperatures when using such a guide plate in a rail attachment point, a latch projection is formed in lateral end segments of the guide surface, in each instance, projecting away from the guide surface in the longitudinal direction of the guide plate, which is provided for the purpose of engaging, during use, under the longitudinal side of the rail that is assigned to the guide surface, in each instance, wherein the distance between the latch projections amounts to at least 60% of the width of the guide surface.

3. 发明申请

US20210140120A1 Sleeper for a Track Superstructure 有权
公开(公告)号：US20210140120A1
公开(公告)日：2021-05-13
申请号：US16605952
申请日：2018-04-17
申请人： Vossloh Fastening Systems GmbH
发明人： Winfried Bösterling , Duo Liu
IPC分类号： E01B3/44 , C04B26/02 , C04B16/04 , C04B14/38
摘要： The invention relates to a sleeper for the track superstructure, which is manufactured in one piece from a plastic material, with the sleeper having an elongated base shape with two end sections, which are connected by a middle section of the sleeper and held at a distance and on their upper side in each case one contact surface is provided for in each case one rail to be supported on the respective end section with a reinforcement extending in the longitudinal direction of the sleeper being embedded into the middle section. In order to design such a plastic sleeper such that it has optimised strength and can be reliably manufactured even using cost-effective plastic/sand mixtures having a high proportion of sand, the invention proposes that the reinforcement extends over the length of the middle section, that the reinforcement is in each case anchored in the respective end section an edge region of the end sections assigned to the middle section and in that the reinforcement is wholly or partially arranged in the upper quarter of the height of the sleeper.

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