초록 ▼

A surfing boom comprising a pipe of synthetic resin having a density of 1.4-1.6 g/cm3. The pipe is reinforced by a plurality of carbon fiber layers. In a first carbon fiber layer, fibers are oriented within an angle of 60°-90°to an axial direction of the boom. In a second carbon fiber layer, fibers

A surfing boom comprising a pipe of synthetic resin having a density of 1.4-1.6 g/cm3. The pipe is reinforced by a plurality of carbon fiber layers. In a first carbon fiber layer, fibers are oriented within an angle of 60°-90°to an axial direction of the boom. In a second carbon fiber layer, fibers are oriented within an angle of 30°to the axial direction of boom.

대표청구항 ▼

A surfing boom comprising a pipe of synthetic resin having a density of 1.4-1.6 g/cm3 which is reinforced by a plurality of carbon fiber layers, said plurality of carbon fiber layers composed of a first carbon fiber layer, in which fibers are oriented within an angle of 60°-90°to an axial direction

A surfing boom comprising a pipe of synthetic resin having a density of 1.4-1.6 g/cm3 which is reinforced by a plurality of carbon fiber layers, said plurality of carbon fiber layers composed of a first carbon fiber layer, in which fibers are oriented within an angle of 60°-90°to an axial direction of the boom, and a second carbon fiber layer, in which fibers are oriented within an angle of 30°to the axial direction of said boom, said pipe having uniform thickness in a plane transverse to said axial direction of the boom.