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US 5,329,201 AGranted
Vibration driven motor
AssigneeCanon Kabushiki Kaisha
InventorTakayuki Shirasaki
Life of this patent
Estimating the term…
Abstract
A vibration wave driven motor including a vibration member having a friction contact surface and a rotor having a contact surface, which is in contact with the vibration member. The contact surface of the rotor consists of a composite resin filled and blended with a wear modifier and a friction regulator, as needed, and has a Rockwell hardness of 80 to 110. The friction surface of the vibration member is formed by a multi-layered film of a nickel intermetallic compound having a Vickers hardness of 800 to 1,200.
Claims11
A vibration driven motor comprising;
- a vibration member having a contact surface and for generating a vibration therein in response to a signal applied thereto;
- and
- a contact ember having a contact surface which is in contact with the contact surface of said vibration member, said vibration causing relative movement between the vibration member and the contact member, and
- the contact surface of said contact member having a composite resin layer having a Rockwell hardness (H.sub.R M) of 80 to 110, and the contact surface of said vibration member being formed of a multi-layered film of an intermetallic compound of nickel having a Vickers hardness (Hv) of 800 to 1,200.
1 more element
A vibration driven motor or apparatus comprising;
- a vibration member having a contact surface and for generating a travelling wave therein in response to an electrical signal applied thereto;
- a contact member having a contact surface which is in pressure contact with the contact surface of said vibration member, said wave causing relative movement between the vibration member and the contact member, and
- the contact surface of said contact member having a composite resin layer having a Rockwell hardness (H.sub.R M) of 80 to 110, and the contact surface of said vibration member being formed of a multi-layered film of an intermetallic compound of nickel having a Vickers hardness (Hv) of 800 to 1,200.
Dependencies are inferred from the claim text.