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https://drivepatents.com/patents/1067205 · 24 May 2006
A roller bearing apparatus (2) having a fixed bearing ring (3), a rotary bearing ring (5), and rolling elements (6,7) rollably provided between the bearing rings. Piezoelectric elements (13a,13b,13c,13d,14a,14b,14c,14d) are provided in the form of a film i...