US 12,119,761 B2
Injector and control method for an ultrasonic motor
Toshio Kanetaka, Tokyo (JP); Makoto Udagawa, Tokyo (JP); and Toshiiku Sashida, Tokyo (JP)
Assigned to NEMOTO KYORINDO CO., LTD., Tokyo (JP)
Filed by NEMOTO KYORINDO CO., LTD., Tokyo (JP)
Filed on Mar. 10, 2022, as Appl. No. 17/654,392.
Application 15/355,969 is a division of application No. 14/126,364, granted, now 9,545,646, issued on Jan. 17, 2017, previously published as PCT/JP2012/003730, filed on Jun. 7, 2012.
Application 17/654,392 is a continuation of application No. 15/355,969, filed on Nov. 18, 2016, granted, now 11,303,227.
Claims priority of application No. 2011-132031 (JP), filed on Jun. 14, 2011.
Prior Publication US 2022/0200487 A1, Jun. 23, 2022
Int. Cl. B05B 17/06 (2006.01); A61M 5/00 (2006.01); A61M 5/145 (2006.01); H02N 2/06 (2006.01); H02N 2/12 (2006.01); H02N 2/14 (2006.01); H02N 2/16 (2006.01)
CPC H02N 2/14 (2013.01) [A61M 5/007 (2013.01); A61M 5/14546 (2013.01); B05B 17/06 (2013.01); H02N 2/062 (2013.01); H02N 2/126 (2013.01); H02N 2/163 (2013.01); H02N 2/166 (2013.01); A61M 5/1452 (2013.01); A61M 2205/058 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An ultrasonic motor unit comprising:
a single shaft; and
a first ultrasonic motor and a second ultrasonic motor respectively including a stator which includes a piezoelectric element and a rotor which comes into close contact with the stator so as not to rotate when a voltage is not applied to the first and second ultrasonic motors respectively,
wherein the rotor of the first ultrasonic motor and the rotor of the second ultrasonic motor are fixed to the single shaft so as to transmit, when one of the first ultrasonic motor and the second ultrasonic motor fixed to the single shaft is adhered, rotational force of another one of the first ultrasonic motor and the second ultrasonic motor fixed to the single shaft via the single shaft to rotate the rotor of the one of the first ultrasonic motor and the second ultrasonic motor.