Invention Grant
- Patent Title: Reinforcement strand for reinforcing a polymer article
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Application No.: US16624493Application Date: 2018-06-25
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Publication No.: US11186947B2Publication Date: 2021-11-30
- Inventor: Wouter Vanreyten , Koen Claeys , Gerd Morren
- Applicant: BEKAERT ADVANCED CORDS AALTER NV
- Applicant Address: BE Aalter
- Assignee: BEKAERT ADVANCED CORDS AALTER NV
- Current Assignee: BEKAERT ADVANCED CORDS AALTER NV
- Current Assignee Address: BE Aalter
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: EP17177992 20170627
- International Application: PCT/EP2018/066861 WO 20180625
- International Announcement: WO2019/002162 WO 20190103
- Main IPC: D07B1/06
- IPC: D07B1/06 ; B66B7/06

Abstract:
A reinforcement strand (400) comprises a core (403) around which steel filaments (404) are twisted all with the same final lay length and direction. The steel filaments are arranged in an intermediate layer comprising N first steel filaments and an outer layer of 2N steel filaments circumferentially arranged around the intermediate layer. In the intermediate layer filaments will contact one another at a closing lay length that is determined by the number of steel filaments N in the intermediate layer, the diameter of the core and the diameter of the first steel filaments. By choosing the final lay length and direction equal to the between two and six times the closing lay length gaps will form between the intermediate layer filaments. The 2N outer layer filaments are further divided into a group of smaller (408) and a group of larger (406) diameter steel filaments.
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