公开(公告)号：US20050184533A1

公开(公告)日：2005-08-25

申请号：US10871357

申请日：2004-06-18

申请人： Joseph Hebenstreit ,  Roderick MacGregor

发明人： Joseph Hebenstreit ,  Roderick MacGregor

IPC分类号： F03G7/06 ,  F16D63/00 ,  F16D65/14 ,  F16H21/00

CPC分类号： F16D63/006 ,  F03G7/065 ,  F16D2121/32 ,  F16D2121/34 ,  Y10T292/1082

摘要： Embodiments of the invention relate to shape memory alloy (“SMA”)-actuated release mechanisms for drive systems. In one embodiment, a SMA-actuated release mechanism includes at least one anchor point and a pivot point. The SMA-actuated release mechanism also includes a latch member pivotally coupled to the pivot point and configured to engage a drive member of a drive system. The SMA=actuated release mechanism further includes a SMA element having a first portion coupled to the least one anchor point and a second portion coupled to the latch member. Activation of the SMA element causes the latch member to pivot about the pivot point, such that the latch member disengages from the drive member.

摘要翻译： 本发明的实施例涉及用于驱动系统的形状记忆合金（“SMA”） - 致动释放机构。 在一个实施例中，SMA致动的释放机构包括至少一个锚定点和枢轴点。 SMA致动的释放机构还包括枢转地联接到枢转点并被配置为接合驱动系统的驱动构件的闩锁构件。 SMA =致动释放机构还包括SMA元件，其具有联接到至少一个锚定点的第一部分和联接到闩锁构件的第二部分。 SMA元件的激活导致闩锁构件围绕枢转点枢转，使得闩锁构件与驱动构件脱离接合。

公开(公告)号：US20050023086A1

公开(公告)日：2005-02-03

申请号：US10882786

申请日：2004-06-30

申请人： Andrei Szilagyi

发明人： Andrei Szilagyi

IPC分类号： B65H59/10 ,  F03G20060101 ,  F03G7/06 ,  F16D49/02 ,  F16D51/00 ,  F16D55/02 ,  F16D65/14

CPC分类号： F03G7/065 ,  F16D49/02 ,  F16D2121/32 ,  F16D2127/004

摘要： In one embodiment of the present invention, a shape memory alloy (“SMA”)-actuated helical spring brake comprises a rotatable member and a helical wrap spring arranged concentrically about the rotatable member. The spring has a first spring end and a second spring end and includes a number of turns that are based radially inward and are configured to frictionally engage the rotatable member. The turns permit rotation of the rotatable member in a first direction and inhabit rotation in a second direction. The SMA-actuate helical spring brake also include an anchor point coupled to the second spring end, and an SMA actuator having an output drive member coupled to the first spring end. The SMA actuator is configured to, for example, deflect the first spring end to permit the rotatable member to rotate.

摘要翻译： 在本发明的一个实施例中，形状记忆合金（“SMA”）致动的螺旋弹簧制动器包括可旋转构件和围绕可旋转构件同心布置的螺旋形卷簧。 弹簧具有第一弹簧端和第二弹簧端，并且包括多个基于径向向内的匝，并且构造成摩擦地接合可旋转构件。 转动允许可旋转构件沿第一方向旋转并沿第二方向居住旋转。 SMA致动螺旋弹簧制动器还包括联接到第二弹簧端的锚定点和具有联接到第一弹簧端的输出驱动构件的SMA致动器。 SMA致动器被构造成例如使第一弹簧端部偏转以允许可旋转构件旋转。

公开(公告)号：US5822989A

公开(公告)日：1998-10-20

申请号：US656761

申请日：1996-06-03

申请人： Michael L. Sturdevant ,  Griffin M. Allen, Jr. ,  Edward T. Schneider

发明人： Michael L. Sturdevant ,  Griffin M. Allen, Jr. ,  Edward T. Schneider

IPC分类号： F03G7/06 ,  F16D43/25 ,  F16D65/14 ,  F16D65/16

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 engageable plates (18, 22) of a friction member assembly (C) to engage.

摘要翻译： 致动器（A）包括其中限定了多个室或孔（34）的主体（10）。 孔在内端通过细长通道（30）相互连接。 加热器元件（32）沿着细长通道延伸。 每个室或孔的细长通道和内部部分填充有聚合物材料，其在加热时膨胀和流动，优选经历固体与液体相变。 可膨胀构件（12），例如活塞，隔膜，波纹管等安装在孔或孔中。 当加热器加热导致其膨胀和流动的聚合物材料时，可延伸元件（12）在有限行程的高力下延伸。 在一个实施例中，可延伸构件的延伸使得推动轴承（B）移动，从而使摩擦构件组件（C）的摩擦接合板（18,22）接合。