公开(公告)号：US3936020A

公开(公告)日：1976-02-03

申请号：US385286

申请日：1973-08-03

申请人： Andrew W. Jackson

发明人： Andrew W. Jackson

IPC分类号： B64C31/06

CPC分类号： A63H27/08

摘要： A highly aerodynamically stable kite having a flexible statically indeterminate face which during flight forms a curvilinear airfoil that is maintained in the center and top edges by rigid linear stiffeners removably retained in a novel nosepiece. The nosepiece is a rigid three dimensional structure formed by folding a thin flat pattern. A novel tail member aids kite stability by providing plural aerodynamically rotatable elements spacedly depending beneath the kite upon a common flexible line.

摘要翻译： 高度空气动力学稳定的风筝具有柔性静态不确定面，在飞行过程中形成曲线翼型，其通过刚性线性加强筋保持在中心和顶部边缘，可拆卸地保持在新颖的鼻梁中。 鼻梁是通过折叠薄平面图案形成的刚性三维结构。 一种新颖的尾部构件通过提供多个空气动力学可旋转的元件来辅助风筝的稳定性，这些空气动力学可旋转元件在通常的柔性线上依赖于风筝之下的间隔。

公开(公告)号：US6003946A

公开(公告)日：1999-12-21

申请号：US39696

申请日：1998-03-16

申请人： Andrew W. Jackson

发明人： Andrew W. Jackson

IPC分类号： A47C1/026 ,  A47C1/14 ,  B60N2/02

CPC分类号： A47C1/143 ,  A47C1/026 ,  A47C7/006

摘要： In a chair having a frame, a fixed seat, and a pivotal back, the frame includes two bridge-supporting legs extending between an upper position and a lower position behind and below the upper position. A transverse bridge fitting removably into openings in the bridge-supporting legs bridges the bridge-supporting legs in at least two orientations. The bridge limits pivotal movement of the back, when pivoted downwardly and backwardly, to at least two reclined positions. In one contemplated embodiment wherein the transverse bridge comprises a beam fitting removably and nonrotatably into the openings and bridging the bridge-supporting legs in two such orientations, a spacer extending along and mounted fixedly to the transverse beam is interposed between the transverse beam and the back in one such orientation but not in the other orientation. In other contemplated embodiments wherein the transverse bridge comprises a transverse axle, similar spacers mounted fixedly to the transverse beam are interposed between the transverse beam and the back, each spacer having a bearing surface conforming generally to a spiral or to a closed, curved shape when viewed axially and adapted to bear against the back at varying radial distances from the axis.

摘要翻译： 在具有框架，固定座椅和枢转背部的椅子中，框架包括在上部位置和下部位置之间的上部位置和下部位置之间延伸的两个桥梁支撑腿部。 跨桥支撑腿部可拆卸地插入开口的横向桥接装置以至少两个取向桥接桥支撑腿。 当桥梁向下和向后枢转时，桥梁将枢转运动限制在至少两个倾斜位置。 在一个预期的实施例中，其中横向桥梁包括可拆卸地且不可旋转地进入开口并且以两个这样的取向桥接桥梁支撑腿部的梁配件，沿横梁延伸并且固定地安装在横梁上的间隔件插入在横向梁和后部 在一个这样的方向，但不是在另一个方向。 在其他考虑的实施例中，其中横向桥梁包括横向轴，固定地安装在横向梁上的类似的间隔件插入在横向梁和后部之间，每个间隔件具有通常符合螺旋或闭合弯曲形状的支承表面， 轴向观察并适于在与轴线不同的径向距离处抵靠背面。