Patent ID: 11905991
Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A fibre-reinforced polymer composite shaft for transmitting loads along a central axis, the composite shaft comprising:
a first interface surface extending along the central axis and comprising at least one helical groove and/or a plurality of circumferential grooves for engaging with at least one corresponding helical ridge and/or a plurality of corresponding circumferential ridges of a second interface surface of an end fitting;
wherein the at least one helical groove and/or the plurality of circumferential grooves comprises two opposing flanks each having a flank angle of between 32° and 51°, wherein the flank angle is measured between the flank and a perpendicular to the central axis in a plane that contains the central axis.