Patent Number: 8,716,919

Title: Drive apparatus

Abstract: A drive apparatus according to an embodiment includes: a movable unit configured to include a first sliding surface, and slide along the first sliding surface; a vibration generating unit configured to generate vibrations; a vibration transmitting unit configured to include a second sliding surface in contact with the first sliding surface of the movable unit, and transmit the vibrations generated by the vibration generating unit to the movable unit via the first and second sliding surfaces; a pre-pressure applying unit configured to apply pre-pressure to the movable unit via the vibration transmitting unit; and a driving force generating unit configure to generate a driving force for driving the movable unit in a predetermined direction, the driving force being greater than a friction force between the first sliding surface and the second sliding surface when the vibrations are being transmitted to the vibration transmitting unit, the driving force being smaller than the friction force when the vibrations are not being transmitted to the vibration transmitting unit.

Inventors: Takahashi; Hiroshi (Kanagawa-ken, JP)

Assignee: Kabushiki Kaisha Toshiba

International Classification: H02N 2/12 (20060101)

Expiration Date: 5/06/12018