[특허]Method for manufacturing multi-layered high-deformation piezoelectric actuators and sensors

[미국특허] Method for manufacturing multi-layered high-deformation piezoelectric actuators and sensors 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B32B-031/04 B32B-031/20 H01L-041/22
출원번호	US-0119883 (1998-07-21)
발명자 / 주소	Face Jr. Samuel A. Clark Stephen E.
출원인 / 주소	Face International Corp.
인용정보	피인용 횟수 : 41 인용 특허 : 3

초록 ▼

A method and apparatus for manufacturing prestressed piezoelectric actuators which maximizes output, and increases the precision and efficiency with which the multi-layer actuators are made. Individual layers of the piezoelectric actuators are automatically stacked and registered with respect to each other within press members prior to bonding the layers to each other with a thermoplastic adhesive. Compressive force is applied while heat is conductively transferred from a heating element to the actuator in order to raise the temperature of each of the layers above the melting point of the thermoplastic. The temperature of the heating element is then decreased until the temperature of the actuator layers drops to below the melting point of the thermoplastic adhesive, thereby bonding the layers. Compressive force is then released, and the actuators are removed, further cooled and polarized. The temperature of the actuator may be sensed, and the pressure and the heat applied to the actuator varied in accordance with the sensed temperature.

대표청구항 ▼

[ We claim:] [1.] A method of manufacturing a multilayered high deformation piezoelectric actuator, comprising the steps of:selecting a first piezoelectric ceramic layer, a first metal prestress layer and a second metal prestress layer, said first piezoelectric ceramic layer and said first metal prestress layer and said second metal prestress layer each having two major surfaces, wherein said second metal prestress layer has a dimension that is larger than the other layers;placing in order in a press said first metal prestress layer, a first adhesive layer, said first piezoelectric ceramic layer, a second adhesive layer and said second metal prestress layer so as to form a stack comprising said first metal prestress layer, said first adhesive layer, said first piezoelectric ceramic layer, said second adhesive layer and said second metal prestress layer;applying pressure to said stack with said press in a direction perpendicular to each of said major surfaces;heating said stack to a temperature above a melting point of each of said adhesive layers and below a Curie temperature of said first piezoelectric ceramic layer;maintaining a temperature of said stack above a melting point of each of said adhesive layers and below a Curie temperature of said first piezoelectric ceramic layer until each of said adhesive layers has melted;after said step of maintaining the temperature of said stack, decreasing the temperature of said stack to below a melting point of each of said adhesive layers;after said step of decreasing the temperature of said stack, releasing said pressure;and, after said step of releasing said pressure, cooling said stack to room temperature;wherein said step of placing in order in a press said first metal prestress layer, a first adhesive layer, said first piezoelectric ceramic layer, a second adhesive layer and said second metal prestress layer comprises placing a first portion of said stack into a first recess within a first rigid press member and placing a second portion of said stack into a second recess within a said second rigid press member;and wherein said second recess is configured to accommodate the difference in dimensions between said second metal prestress layer and said other layers.

이 특허에 인용된 특허 (3) 인용/피인용 타임라인 분석

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Yoon,Kwang Joon; Park,Hoon Cheol, Curved shape actuator device composed of electro active layer and fiber composite layers.
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O'Phelan, Michael J.; Schmidt, Brian L.; Poplett, James M.; Tong, Robert R.; Kavanagh, Richard J.; Iyer, Rajesh; Barr, Alexander G.; Christenson, Luke J.; Waytashek, Brian V.; Schenk, Brian D.; Sherwood, Gregory J., Flat capacitor for an implantable medical device.
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O'Phelan, Michael J.; Schmidt, Brian L.; Poplett, James M.; Tong, Robert R.; Kavanagh, Richard J.; Iyer, Rajesh; Barr, Alexander Gordon; Christenson, Luke J.; Waytashek, Brian V.; Schenk, Brian D.; Sherwood, Gregory J., Flat capacitor for an implantable medical device.
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O'Phelan,Michael J.; Schmidt,Brian L.; Poplett,James M.; Tong,Robert R.; Kavanagh,Richard J.; Iyer,Rajesh; Barr,Alexander Gordon; Christenson,Luke J.; Waytashek,Brian V.; Schenk,Brian D.; Sherwood,Gr, Flat capacitor for an implantable medical device.
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O'Phelan,Michael J.; Schmidt,Brian L.; Poplett,James M.; Tong,Robert R.; Kavanagh,Richard J.; Iyer,Rajesh; Barr,Alexander Gordon; Christenson,Luke J.; Waytashek,Brian V.; Schenk,Brian D.; Sherwood,Gr, Flat capacitor for an implantable medical device.
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Barr, Alexander Gordon; Hamre, Paul K., Method of constructing a capacitor stack for a flat capacitor.
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O'Phelan, Michael J.; Poplett, James M.; Tong, Robert R.; Barr, A. Gordon; Kavanagh, Richard J.; Waytashek, Brian V., Method of constructing a capacitor stack for a flat capacitor.
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Kelley,Kurtis C.; Maushard,Jerry P.; Waterfield,L. Glenn, Method of manufacturing a multi-layered piezoelectric actuator.
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A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
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[미국특허] Method for manufacturing multi-layered high-deformation piezoelectric actuators and sensors 원문보기

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[미국특허] Method for manufacturing multi-layered high-deformation piezoelectric actuators and sensors 원문보기

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이 특허에 인용된 특허 (3) 인용/피인용 타임라인 분석

이 특허를 인용한 특허 (41) 인용/피인용 타임라인 분석

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