US 9,812,994 B2
Ultrasonic motor and lens driving apparatus
Ryo Yamasaki, Tokyo (JP); and Makoto Oikawa, Yokohama (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jun. 23, 2014, as Appl. No. 14/312,248.
Application 14/312,248 is a continuation of application No. 13/751,906, filed on Jan. 28, 2013, granted, now 9,000,654.
Claims priority of application No. 2012-017136 (JP), filed on Jan. 30, 2012.
Prior Publication US 2014/0300977 A1, Oct. 9, 2014
This patent is subject to a terminal disclaimer.
Int. Cl. H02N 2/02 (2006.01); H02N 2/00 (2006.01); H02N 2/10 (2006.01); G02B 7/04 (2006.01)
CPC H02N 2/0055 (2013.01) [G02B 7/04 (2013.01); H02N 2/103 (2013.01); H02N 2/0015 (2013.01)] 35 Claims
OG exemplary drawing
 
1. A motor comprising:
a vibrator configured to generate a vibration;
a relatively movable member configured to be movable by the vibrator, wherein the relatively movable member is movable relatively according to the vibration of the vibrator;
a holding unit configured to hold the vibrator, wherein the holding unit includes a first holding member configured to hold the vibrator and a second holding member; and
a pressure unit configured to press the vibrator against the relatively movable member,
wherein the second holding member is configured to press the vibrator against the relatively movable member, and
wherein the first holding member has a higher damping capability against a vibration than the second holding member.