Fiber reinforced plastic pipe and power transmission shaft employing the same

A fiber reinforced plastic pipe reduced in thickness and increased in diameter by pultrusion process, comprising

• a fiber bundle spun and aligned in a longitudinal direction, and
• circumferential reinforced fiber sheet provided at least either on an outer surface layer or on an inner surface layer thereof, wherein
• the pipe has a slit, capable of being reduced in diameter along the circumference, provided in the longitudinal direction, such that said fiber reinforced plastic pipe can be inserted into a metal pipe.

A power transmission shaft comprising a metal joint element and a metal pipe jointed to each other, wherein

• the shaft further comprises a fiber reinforced plastic pipe inserted into said metal pipe, said fiber reinforced plastic pipe being reduced in thickness and increased in diameter by pultrusion process, comprising a fiber bundle spun and aligned in a longitudinal direction, and circumferential reinforced fiber sheet provided at least either on an outer surface layer or on an inner surface layer thereof.

A power transmission shaft comprising a metal joint element and a metal pipe jointed to each other, wherein

• the shaft further comprises a fiber reinforced plastic pipe inserted into said metal pipe, said fiber reinforced plastic pipe being reduced in thickness and increased in diameter by pultrusion process, comprising a fiber bundle spun and aligned in a longitudinal direction, and circumferential reinforced fiber sheet provided at least either on an outer surface layer or on an inner surface layer, the pipe having a slit, capable of being reduced in diameter along the circumference, provided in the longitudinal direction.