Patent ID: 8878408

Claim:
A bearing, comprising: an axis of rotation; a first bearing ring having a body with a section; a second bearing ring located radially inward of the first bearing ring body in a radial direction orthogonal to the axis of rotation; a plurality of rolling bodies; and, a power generation unit, comprising: a magnetic ring including a sequence of magnetic poles, including a first magnetic pole and a second magnetic pole, running peripherally along a circumference of the second bearing ring; a first claw ring, which is fastened to the first bearing ring, having: a sequence of first claws running peripherally along a circumference of the first bearing ring; and, a first edge in contact with the first bearing ring a second claw ring, which is fastened to the first bearing ring, having a sequence of second claws running peripherally along the circumference of the first bearing ring and including a second edge in contact with the first bearing ring; a magnetic induction coil, which is arranged between the first claw ring and the second claw ring; and, a cavity: bounded by the first bearing ring, the magnetic induction coil and the first and second claw rings; located between the magnetic induction coil and the first bearing ring in the radial direction; and, located between the first and second claw rings in the axial direction, wherein: every rolling body included in the bearing is included in the plurality of rolling bodies; all the rolling bodies in the plurality of rolling bodies are aligned with each other in the circumferential direction; a closed magnetic circuit, which runs peripherally around the magnetic induction coil to the second magnetic pole, is closed by the first magnetic pole via one of the first claws of the first claw ring and via one of the second claws of the second claw ring; the first claw ring and the second claw ring are each arranged in a magnetically conductive connection with the section of the body of the first bearing rings; and, the magnetic circuit is closed substantially via the section of the body of the first bearing ring.