[특허]Packaged strain actuator

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01L-041/08
출원번호	US-0261475 (1999-02-26)
발명자 / 주소	Kenneth B. Lazarus Mark E. Lundstrom Jeffrey W. Moore Edward Crawley Farla Russo Shoko Yoshikawa
출원인 / 주소	Active Control eXperts, Inc.
대리인 / 주소	Testa, Hurwitz & Thibeault LLP
인용정보	피인용 횟수 : 40 인용 특허 : 31

초록 ▼

A modular actuator assembly includes one or more plates or elements of electro-active material bonded to an electroded sheet, preferably by a structural polymer to form a card. The card is sealed, and may itself constitute a practical device, such as a vane, shaker, stirrer, lever, pusher or sonicat

A modular actuator assembly includes one or more plates or elements of electro-active material bonded to an electroded sheet, preferably by a structural polymer to form a card. The card is sealed, and may itself constitute a practical device, such as a vane, shaker, stirrer, lever, pusher or sonicator for direct contact with a solid or immersion in a fluid, or may be bonded by a stiff adhesive to make a surface-to-surface mechanical coupling with a solid workpiece, device, substrate machine or sample. The structural polymer provides a bending stiffness such that the thin plate does not deform to its breaking point, and a mechanical stiffness such that shear forces are efficiently coupled from the plate to the workpiece. In further embodiments, the card may include active circuit elements for switching, powering or processing signals, and/or passive circuit elements for filtering, matching or damping signals, so that few or no connections to outside circuitry are required. The actuator assembly can be manufactured in quantity, to provide a versatile actuator with uniform mechanical and actuation characteristics, that introduces negligible mass loading to the workpiece. The cards themselves may be arranged as independent mechanical actuators, rather than strain-transfer actuators, in which the induced strain changes the position of the card. Various arrangements of pinned or cantilevered cards may act as a pusher, bender or other motive actuator, and structures such as powered bellows may be formed directly by folding one or more suitably patterned cards.

대표청구항 ▼

1. An actuator device comprising:an electro-active ceramic element; a conductor comprising a pair of interdigital electrodes; an insulator; and a pair of electrically conductive regions, wherein said pair of electrically conductive regions are spaced apart from said electro-active ceramic element; w

1. An actuator device comprising:an electro-active ceramic element; a conductor comprising a pair of interdigital electrodes; an insulator; and a pair of electrically conductive regions, wherein said pair of electrically conductive regions are spaced apart from said electro-active ceramic element; wherein said electro-active element, said conductor; and said insulator are bonded together such that in-plane strain in said electro-active element is shear coupled between said electro-active element and said insulator; wherein said pair of interdigital electrodes are in direct mechanical and electrical contact with said electro-active element and in direct electrical contact with said pair of electrically conductive regions; and wherein each of said pair of interdigital electrodes comprises a plurality of angled line electrodes and a common bus.

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이 특허에 인용된 특허 (31) 인용/피인용 타임라인 분석

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이 특허에 인용된 특허 (31) 인용/피인용 타임라인 분석

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이 특허에 인용된 특허 (31) 인용/피인용 타임라인 분석

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