公开(公告)号：US07021055B2

公开(公告)日：2006-04-04

申请号：US11017563

申请日：2004-12-20

申请人： Mark A. Gummin ,  William Donakowski ,  Geoffrey A. Gaines

发明人： Mark A. Gummin ,  William Donakowski ,  Geoffrey A. Gaines

IPC分类号： F01B29/10

CPC分类号： F03G7/065

摘要： Actuators that employs a shape memory alloy component as the driving element include linear and rotational devices. An Intrinsic Return Means (IRM) may be imparted to the SMA actuator, thereby reducing the use of a spring return mechanism. The rotational actuator may include a cylindrical bobbin with a helical groove to receive an SMA wire. A number of turns may be placed in a small length of bobbin to amplify the rotational excursion. In another rotational actuator, a plurality of narrow, coaxial rings are provided, the rings being nested in close concentric fit or stacked in side-by-side fashion. Each ring is provided with a groove extending thereabout to receive an SMA wire and contraction of the wire causes each ring to rotate with respect to the adjacent ring. In an embodiment for linear actuation, the invention provides a bar-like component having SMA wires joined between bars. The invention includes a lost motion coupling to join two counter-acting SMA stroke amplification devices, whether linear or rotational.

公开(公告)号：US06832477B2

公开(公告)日：2004-12-21

申请号：US10200672

申请日：2002-07-22

申请人： Mark A Gummin ,  William Donakowski ,  Geoffrey A. Gaines

发明人： Mark A Gummin ,  William Donakowski ,  Geoffrey A. Gaines

IPC分类号： F01B2910

CPC分类号： F03G7/065

摘要： Actuators that employs a shape memory alloy component as the driving element include linear and rotational devices. An Intrinsic Return Means (IRM) may be imparted to the SMA actuator, thereby reducing the use of a spring return mechanism. The rotational actuator may include a cylindrical bobbin with a helical groove to receive an SMA wire. A number of turns may be placed in a small length of bobbin to amplify the rotational excursion. In another rotational actuator, a plurality of narrow, coaxial rings are provided, the rings being nested in close concentric fit or stacked in side-by-side fashion. Each ring is provided with a groove extending thereabout to receive an SMA wire and contraction of the wire causes each ring to rotate with respect to the adjacent ring. In an embodiment for linear actuation, the invention provides a bar-like component having SMA wires joined between bars. The invention includes a lost motion coupling to join two counter-acting SMA stroke amplification devices, whether linear or rotational.

摘要翻译： 采用形状记忆合金部件作为驱动元件的致动器包括线性和旋转装置。 可以向SMA致动器施加本征返回装置（IRM），从而减少弹簧复位机构的使用。 旋转致动器可以包括具有用于接收SMA线的螺旋槽的圆柱形线轴。 可以将一些匝数放置在小长度的筒管中以放大旋转偏移。 在另一个旋转致动器中，提供多个窄的同轴环，这些环以相似的同心配合嵌套或以并排的方式堆叠。 每个环设有一个在其周围延伸的凹槽，用于接收SMA线，并且线的收缩导致每个环相对于相邻的环旋转。 在用于线性致动的实施例中，本发明提供了一种具有连接在杆之间的SMA线的棒状部件。 本发明包括一个空转耦合以连接两个反作用的SMA行程放大装置，无论是线性的还是旋转的。