1
Yukihiro Matsushita, Motoyasu Yano, Masahiko Komoda: Ultrasonic motor having integrated electrodes and manufacturing method of the same. Asmo, Posz Law Group, August 23, 2005: US06933656 (86 worldwide citation)

A stator includes first and second piezoelectric elements, a flexible aluminum-based connective arrangement and upper and lower aluminum-based metal blocks. The flexible aluminum-based connective arrangement includes first to fourth aluminum-based electrodes, which apply a voltage to the piezoelectr ...


2
Yukiyasu Kato, Masahiko Komoda: Actuator with clutch mechanism. ASMO, Colin P Cahoon, Carstens Yee & Cahoon, January 6, 2004: US06672442 (20 worldwide citation)

A clutch mechanism is provided between a driving rotor and a driven rotor. The clutch mechanism selects from a state for transmitting rotational force and a state for discontinuing the transmission of rotational force. The holder permits the rolling. A holder supports rolling bodies such that the ro ...


3
Yasuyoshi Honda, Masahiko Komoda, Keisuke Honda, Toshiaki Miyamoto, Yukinobu Tomida, Masanori Sato, Ryosuke Suganuma, Hideo Kouzaka: Drive circuit for langevin type ultrasonic bolt-tightening motor. Asmo, Honda Electronics, Oliff & Berridge, August 3, 1993: US05233274 (15 worldwide citation)

A drive circuit is used in a Langevin type ultrasonic bolt-tightening motor in which a motor drive voltage having a given frequency is applied to a piezo-electric element in a stator section, the resulting longitudinal and torsional vibrations being effective to rotate a motor section. The drive cir ...


4
Yukiyasu Kato, Masahiko Komoda, Motoyasu Yano: Ultrasonic motor capable of sensing both longitudinal and torsional vibrations thereof and method for operating the same. Asmo, Law Offices of David G Posz, October 22, 2002: US06469419 (15 worldwide citation)

A stator includes a longitudinal-vibration sensing electrode. The stator also includes a torsional-vibration sensing piezoelectric element and a torsional-vibration sensing electrode plate for sensing torsional vibrations. A voltage signal from the torsional-vibration sensing electrode plate or a vo ...


5
Motoyasu Yano, Masahiko Komoda, Shigeaki Kageme, Katsunori Mochizuki, Yukihiro Matsushita, Yasuhiro Osawa: Sunshade system having blind sheet. ASMO, Posz Law Group, January 1, 2008: US07314079 (10 worldwide citation)

A rotatable rod includes a plurality of cylindrical center rods and a plurality of joints. Each joint connects between corresponding two of the plurality of center rods. Each of opposed ends of each center rod has at least one engaging projection, which projects from the end of the center rod in a d ...


6
Yoshihiro Adachi, Masahiko Komoda: Ultrasonic motor driving circuit. Asmo, Reinhart Boerner Van Deuren Norris & Rieselbach, March 3, 1992: US05093606 (7 worldwide citation)

A driving circuit for an ultrasonic motor is disclosed which utilizes a single transformer. A phase shifter frequency-divides the signal from an oscillator by N and generates a plurality of frequency divide signals having different phases. These divided signals are then used to control the driving o ...


7
Toshio Yamamoto, Keiichi Uemura, Tomoyuki Kikuta, Masahiko Komoda, Masayuki Kuwano, Hideki Toida: Armature, manufacturing method of armature, and motor. ASMO, Colin P Cahoon, Carstens Yee & Cahoon, October 12, 2004: US06803695 (6 worldwide citation)

An armature includes a rotary shaft, a core, and a coupling member. The core is formed by using magnetic metal powder and has a tooth. A wire is wound about the tooth. The coupling member has a ductility that is higher than the ductility of the core. The coupling member is located between the core a ...


8
Masahiko Komoda, Motoyasu Yano, Yukihir Matsushita: Ultrasonic motor having securing projections. Asmo, Posz & Bethards, April 19, 2005: US06882085 (3 worldwide citation)

A lower metal block of a stator includes a plurality of securing projections, which engage with an external member and are arranged in an outer peripheral surface of the lower metal block at generally equal angular intervals. Each securing projection is circumferentially located between correspondin ...


9
Masahiko Komoda, Atsushi Tariki: Ultrasonic motor driven by elliptic vibration. Asmo, Fish & Richardson P C, October 9, 2001: US06300705 (3 worldwide citation)

An ultrasonic motor composed of a cylindrical stator having a vibration converting member and a cylindrical rotor slidably rotatable on the stator. Ultrasonic longitudinal vibration is generated in the stator by imposing high frequency voltage on piezoelectric elements disposed in the stator. A part ...


10
Masahiko Komoda: Ultrasonic motor capable of sensing a rotational position of its rotor. Asmo, Law Offices of David G Posz, January 21, 2003: US06509673 (3 worldwide citation)

An ultrasonic motor includes a stator and a rotor. A plurality of slits are arranged at substantially equal angular intervals along an outer peripheral surface of the rotor. A photosensor is supported inside of an upper housing of the motor. The photosensor is arranged to oppose each one of the slit ...