Patent ID: 8776635
Filing Date: 2014-07-15
Classification: F16F,Y10T

Abstract:
1. A flywheel comprising: a wheel having a width W, and a composite rim bilayer spiral structure comprising multiple radial layers of porous steel web material and multiple radial layers of porous nonmetallic fiber partition web material, each having about the width W, spiraled around a central axis of the wheel, forming alternating radially adjacent layers of porous steel web material and porous nonmetallic fiber partition web material, the radial layers of the porous steel web material having cavities therein and are separated from each other by the radial layers of the porous nonmetallic fiber partition web material in a sandwiching spiraling manner; and an adhesive bonding the sandwiching spiraling radial layers of porous steel web material and porous nonmetallic fiber partition web material together, the spiraling layers of the porous steel web material being continuously radially adjacently bonded to adjacent higher strength composite spiraling layers of the porous nonmetallic fiber partition web material and spirally locked together.