US 11,745,624 B2
Messenger wires for electric trains, methods for making and methods for installation
Eric Bosze, San Diego, CA (US); and Peter Hermans, Mechelen (BE)
Assigned to CTC Global Corporation, Irvine, CA (US); and Lamifil NV, Hemiksem (BE)
Appl. No. 16/60,327
Filed by CTC Global Corporation, Irvine, CA (US); and Lamifil nv, Hemiksem (BE)
PCT Filed Dec. 12, 2016, PCT No. PCT/US2016/066152
§ 371(c)(1), (2) Date Jun. 7, 2018,
PCT Pub. No. WO2017/100762, PCT Pub. Date Jun. 15, 2017.
Claims priority of provisional application 62/266,360, filed on Dec. 11, 2015.
Prior Publication US 2018/0361879 A1, Dec. 20, 2018
Int. Cl. B60M 1/22 (2006.01); H01B 5/10 (2006.01); H01B 1/02 (2006.01); H01B 9/00 (2006.01)
CPC B60M 1/22 (2013.01) [H01B 1/026 (2013.01); H01B 5/105 (2013.01); H01B 9/008 (2013.01)] 31 Claims
OG exemplary drawing
 
1. An electrical train messenger wire, the messenger wire comprising:
a single unitary fiber-reinforced composite strength member, the single unitary fiber-reinforced strength member having a tensile strength of at least about 2100 MPa and a coefficient of thermal expansion (CTE) that is not greater than about 2×10−6/° C.;
a conductive layer surrounding the single unitary fiber-reinforced composite strength member, the conductive layer comprising copper or a copper alloy; and
an insulative layer is disposed between the single unitary fiber-reinforced composite strength member and the conductive layer,
wherein the messenger wire comprises a gap between an outer radius of the single unitary composite strength member and an inner radius of the conductive layer.