Patent ID: 8890383

Claim:
A bearing, comprising: an axis of rotation; a first bearing ring having a body with a magnetically conductive section; a second bearing ring having a body with a magnetically conductive section; a rolling body: arranged between the first bearing ring and the second bearing ring; and, including a point at a first furthest distance, in a radial direction orthogonal to the axis of rotation, from the axis of rotation; and a power generation unit which comprises: an end at a second furthest distance, in the radial direction, from the axis of rotation; a sequence of magnetic pole pairs, including a first magnetic pole pair having a first magnetic pole, the sequence of magnetic poles running peripherally along a circumference of the second bearing ring; a claw ring fastened to the first bearing ring and having a sequence of claws, including a first claw, running peripherally along a circumference of the first bearing ring; and, a magnetic induction coil, wherein: the second furthest distance is less than the first furthest distance; a closed magnetic circuit running peripherally around the induction coil is closed by the first magnetic pole of the first pole pair via the first claw of the claw ring; the first claw of the claw ring is arranged in a magnetically conductive connection with the magnetically conductive section of the body of the first bearing ring; the magnetic poles of the magnetic pole pairs are arranged in a magnetically conductive connection with the magnetically conductive section of the body of the second bearing ring; and, the magnetic circuit is closed substantially via the magnetically conductive section of the first bearing ring, the magnetically conductive section of the second bearing ring, and the rolling body.