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公开(公告)号：EP0861373A1
公开(公告)日：1998-09-02
申请号：EP96942002.0
申请日：1996-11-08
CPC分类号： F03G7/06 , G05D23/1921
摘要： An operator selects an operating characteristic, such as a degree of extension or force of an extension member (66) of a thermal actuator (16), with an input circuit (10). The input control circuit generates a reference signal. A feedback circuit (18) monitors a characteristic of the thermal actuator such as a temperature of its internal polymer, extension of the extension member, force, or the like, and generates a corresponding feedback signal. An error circuit (12) compares the reference and feedback signals and generates an error signal in accordance therewith. A dither circuit (30) generates an oscillating dither signal that is superimposed on one of the control and feedback signals before comparison by the error circuit. A power conversion circuit (14) adjusts an amount of electrical power supplied to a heating element (54) of the thermal actuator in accordance with the error signal.
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公开(公告)号：EP0901573B1
公开(公告)日：1999-12-29
申请号：EP97925720.1
申请日：1997-05-27
IPC分类号： F03G7/06
CPC分类号： F03G7/06 , F16D43/25 , F16D65/16 , F16D2121/32
摘要： An actuator (A) includes a body (10) in which a plurality of chambers or bores (34) are defined. The bores are interconnected at an inner end by an elongated passage (30). A heater element (32) extends along the elongated passage. The elongated passage and the inner portion of each chamber or bore are filled with a polymeric material which expands and flows on heating, preferably undergoing a solid to liquid phase change. Extensible members (12), such as pistons, diaphragms, bellows, or the like, are mounted in the bores or wells. When the heater heats the polymeric material causing it to expand and flow, the extensible elements (12) extend under high force with limited travel. In one embodiment, the extension of the extensible members moves a thrust bearing (B) causing frictionally engagable plates (18, 22) of a friction member assembly (C) to engage.
摘要翻译： 致动器（A）包括主体（10），其中限定了多个腔室或孔（34）。 孔在内端由细长通道（30）相互连接。 加热器元件（32）沿细长通道延伸。 细长通道和每个室或孔的内部填充有聚合物材料，该聚合物材料在加热时膨胀并流动，优选经历固体 - 液体相变。 诸如活塞，隔膜，波纹管等的可延伸构件（12）安装在孔或井中。 当加热器加热聚合物材料使其膨胀并流动时，可伸展元件（12）在有限行程的强力作用下延伸。 在一个实施例中，可延伸构件的延伸部移动推力轴承（B），从而引起摩擦构件组件（C）的可摩擦接合板（18,22）接合。
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公开(公告)号：EP1112148B1
公开(公告)日：2002-03-27
申请号：EP99946761.6
申请日：1999-09-07
摘要： A movable clamping element (56) engages a workpiece, whereby a spring (86) is compressed, limiting the amount of clamping force applied to the workpiece. A retainer nut (88) is selectively moved through the use of the tool to a selectable position along a threaded shaft (80) to adjust the spring compression, hence the clamping force. After initial setup, an electrochemical actuator (110) is actuated to melt a polymer, forcing a piston assembly (118, 120) and a bearing (84) to shift the threaded shaft (80) longitudinally against the spring, moving the clamping elements apart a short distance to release or receive a workpiece. The electrochemical actuator is then deactivated, allowing the spring to expand, clamping the workpiece between the clamping elements with the selected force.
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公开(公告)号：EP0901573A1
公开(公告)日：1999-03-17
申请号：EP97925720.0
申请日：1997-05-27
CPC分类号： F03G7/06 , F16D43/25 , F16D65/16 , F16D2121/32
摘要： An actuator (A) includes a body (10) in which a plurality of chambers or bores (34) are defined. The bores are interconnected at an inner end by an elongated passage (30). A heater element (32) extends along the elongated passage. The elongated passage and the inner portion of each chamber or bore are filled with a polymeric material which expands and flows on heating, preferably undergoing a solid to liquid phase change. Extensible members (12), such as pistons, diaphragms, bellows, or the like, are mounted in the bores or wells. When the heater heats the polymeric material causing it to expand and flow, the extensible elements (12) extend under high force with limited travel. In one embodiment, the extension of the extensible members moves a thrust bearing (B) causing frictionally engagable plates (18, 22) of a friction member assembly (C) to engage.
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公开(公告)号：EP1553908A1
公开(公告)日：2005-07-20
申请号：EP03776471.9
申请日：2003-10-22
CPC分类号： A47C27/083 , A47C27/10 , A61G7/05769 , A61G7/05784 , A61G2203/46 , F16K15/147 , F16K15/185 , F16K31/002
摘要： A decubitus mat includes a plurality of individual cells (16) which are pressurized by air from an air supply (10) through air supply lines (12) and metering orifices (14). A polymer sensor/vent structure (20) is mounted on a top surface of each cell to be contacted by a body (22) resting on the mat. The sensor/vent structure defines a plurality of polymer-filled channels (28) and a vent valve (26) which is biased to a closed position. As the body heats the polymer, it undergoes a phase change and expands causing biasing forces (30) which bias the vent valve to open. When the vent valve opens, the air in the cell is released, providing an air flow to remove pooled moisture under the body. The vented cell collapses, transferring support to adjoining cells until it no longer contacts the body. Once removed from the body, the air flow in the cell cools the polymer, closing the vent, allowing the cell to re-pressurize. The polymer is selected such that the cells slightly over and under-deflate in each cycle, creating a massaging action.
摘要翻译： 褥垫包括多个单独的单元（16），其通过空气供应管线（12）和计量孔口（14）由来自空气供应（10）的空气加压。 聚合物传感器/通风口结构（20）安装在每个电池的顶表面上，以由搁置在垫上的主体（22）接触。 传感器/通风口结构限定多个聚合物填充通道（28）和偏置到关闭位置的通气阀（26）。 当身体加热聚合物时，它会发生相变并膨胀，从而导致偏压阀30打开的偏压力（30）。 当排气阀打开时，电池内的空气被释放，提供空气流动以去除身体下方的集中湿气。 通气的细胞塌陷，将支持转移到邻接的细胞，直到它不再接触身体。 一旦从身体中取出，细胞内的气流冷却聚合物，关闭通气孔，使细胞重新加压。 选择聚合物使得细胞在每个循环中略微超过和不足，从而产生按摩作用。
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公开(公告)号：EP0861373B1
公开(公告)日：2000-08-30
申请号：EP96942002.5
申请日：1996-11-08
IPC分类号： F03G7/06
CPC分类号： F03G7/06 , G05D23/1921
摘要： An operator selects an operating characteristic, such as a degree of extension or force of an extension member (66) of a thermal actuator (16), with an input circuit (10). The input control circuit generates a reference signal. A feedback circuit (18) monitors a characteristic of the thermal actuator such as a temperature of its internal polymer, extension of the extension member, force, or the like, and generates a corresponding feedback signal. An error circuit (12) compares the reference and feedback signals and generates an error signal in accordance therewith. A dither circuit (30) generates an oscillating dither signal that is superimposed on one of the control and feedback signals before comparison by the error circuit. A power conversion circuit (14) adjusts an amount of electrical power supplied to a heating element (54) of the thermal actuator in accordance with the error signal.
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公开(公告)号：EP1112148A1
公开(公告)日：2001-07-04
申请号：EP99946761.6
申请日：1999-09-07
摘要： A movable clamping element (56) engages a workpiece, whereby a spring (86) is compressed, limiting the amount of clamping force applied to the workpiece. A retainer nut (88) is selectively moved through the use of the tool to a selectable position along a threaded shaft (80) to adjust the spring compression, hence the clamping force. After initial setup, an electrochemical actuator (110) is actuated to melt a polymer, forcing a piston assembly (118, 120) and a bearing (84) to shift the threaded shaft (80) longitudinally against the spring, moving the clamping elements apart a short distance to release or receive a workpiece. The electrochemical actuator is then deactivated, allowing the spring to expand, clamping the workpiece between the clamping elements with the selected force.
摘要翻译： 可移动的夹紧元件（56）接合工件，由此弹簧（86）被压缩，从而限制了施加到工件上的夹紧力的量。 通过使用工具将固定螺母（88）选择性地沿着螺纹轴（80）移动到可选位置，以调节弹簧压缩，从而调节夹紧力。 在初始设置之后，致动电化学致动器（110）以熔化聚合物，迫使活塞组件（118,120）和轴承（84）使螺纹轴（80）相对于弹簧纵向移动，将夹紧元件移开 短距离释放或接收工件。 然后使电化学致动器停用，从而允许弹簧膨胀，用选定的力将工件夹紧在夹紧元件之间。
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