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    • 3. 发明授权
    • Terminal-modified imide oligomer composition
    • 终端改性的低聚物组合物
    • US5145916A
    • 1992-09-08
    • US513905
    • 1990-04-24
    • Shinji YamamotoHideho TanakaKazuyoshi Fujii
    • Shinji YamamotoHideho TanakaKazuyoshi Fujii
    • C08F290/00C08F299/00C08G73/10C08L79/08
    • C08G73/1082C08G73/10C08G73/1014C08G73/1017C08G73/1071C08L79/08
    • A composition of terminal-modified imide oligomers is disclosed. The composition comprises a flexible terminal-modified imide oligomer (A) and a rigid terminal-modified imide oligomer (B). The flexible terminal-modified imide oligomer (A) is selected from specific oligomers (I) and (II). The rigid terminal-modified imide oligomer (B) is selected from specific oligomers (III) and (IV). The oligomer (I) is formed from biphenyltetracarboxylic acid or its derivative, an aromatic diamine compound (a) and an unsaturated monoamine compound or an unsaturated carboxylic acid or its derivative. The oligomer (II) is formed from biphenyltetracarboxylic acid or its derivative and an unsaturated monoamine compound. The oligomer (III) is formed from biphenyltetracarboxylic acid or its derivative, an aromatic diamine compound (b) and an unsaturated monoamine compound or an unsaturated carboxylic acid or its derivative. The oligomer (IV) is formed from pyromellitic acid or its derivative, an aromatic diamine compound (c) and an unsaturated monoamine compound or an unsaturated carboxylic acid or its derivative. The aromatic diamine compound (a) has two or more aromatic rings which are combined with each other directly or by a divalent group consisting of one, two or three atoms. The aromatic diamine compound (b) has only one aromatic ring or condensed ring. The aromatic diamine compound (c) may have two or more aromatic rings as is defined in the compound (a), or may have only one aromatic ring or condensed ring as is defined in the compound (b).
    • 10. 发明授权
    • Vibration actuator and method for manufacturing the same
    • 振动致动器及其制造方法
    • US08633632B2
    • 2014-01-21
    • US13052989
    • 2011-03-21
    • Yuki OdaShinji YamamotoAkio Atsuta
    • Yuki OdaShinji YamamotoAkio Atsuta
    • H02N11/00
    • H01L41/35H02N1/008H02N2/001H02N2/005H02N2/0055H02N2/006H02N2/0065H02N2/12H02N2/16H02N2/163H02N2/22Y10T29/42Y10T29/49
    • A vibration actuator includes an elastic body on which at least one projection is formed and a vibrating body including an electromechanical conversion device, and drives a driven member that is in contact with a contact portion of the projection by causing an end portion of the projection to perform an ellipsoidal movement in response to a combination of two vibration modes generated in the vibrating body when an alternating driving voltage is applied. The elastic body is formed integrally with the projection and a bonding portion between the projection and the electromechanical conversion device. A space is provided between the contact portion and the electromechanical conversion device to which the projection is bonded. The spring portion is provided between the bonding portion and the contact portion and causes the projection to exhibit a spring characteristic when the contact portion is pressed by the driven member.
    • 振动致动器包括:弹性体,其上形成有至少一个突起;以及振动体,其包括机电转换装置,并且通过使突起的端部通过突出部的端部驱动与突起的接触部分接触的从动构件 当施加交替的驱动电压时,响应于在振动体中产生的两种振动模式的组合来执行椭圆运动。 弹性体与突起一体地形成,并且在突起和机电转换装置之间形成接合部。 在接触部和与该凸起接合的机电转换装置之间设置有空间。 弹性部分设置在接合部分和接触部分之间,并且当接触部分被被驱动部件按压时,使突起呈现出弹簧特性。