US Patent 10035385 Tire producing electrical power

The present application relates to a tire (2) comprising a tread portion (4) and sidewalls (6) terminating with beads, with inner sides defining an annular cavity; a deformable structure (8) located in the annular cavity in contact with the inner side of the tread portion (4), said structure (8) comprising bendable elements (10); wherein the bendable elements (10) of the deformable structure (8) comprise a piezoelectric material (102) so as to produce electrical energy from bending of said elements (10) and comprise at least one thermoelectric material (101, 103) so as to produce electrical energy from heat of said elements.