-
公开(公告)号：US4142392A
公开(公告)日：1979-03-06
申请号：US832540
申请日：1977-09-12
CPC分类号： B21H7/187 , B21C37/202 , B21C37/207
摘要： An internal groove forming apparatus for heat exchanging pipes, having a cylindrical holder adapted to be loosely fitted in a heat exchanging pipe in concentric relationship, and a plurality of groove forming rolling tools arranged on the holder in a plurality of axially spaced, circumferentially oriented rows and rotatably supported on the holder in such a manner that the rolling tools of one of the two adjacent rows are disposed in staggered relationship with respect to those of the other and an imaginary circle circumscribing the rolling tools is interposed between an outer peripheral surface and an inner peripheral surface of the heat exchanging pipe. Axial relative movements of the heat exchanging pipe and the holder enable the rolling tools to form a number of substantially axially oriented grooves on the inner peripheral surface of the heat exchanging pipe.
摘要翻译： 一种用于热交换管的内槽形成装置，具有适于以同心的方式松散地装配在热交换管中的圆柱形保持器，以及多个槽形成滚动工具，该多个槽形成滚动工具以多个轴向间隔开的周向取向的排 并且以这样的方式可旋转地支撑在保持器上，使得两个相邻行中的一个的滚动工具相对于另一个排列成交错关系，并且围绕滚动工具的假想圆插入在外周表面和 热交换管的内周面。 热交换管和保持器的轴向相对运动使得轧制工具能够在热交换管的内周表面上形成多个基本轴向定向的槽。
-
公开(公告)号：US4506423A
公开(公告)日：1985-03-26
申请号：US512948
申请日：1983-07-13
CPC分类号： F25B41/06 , B21D26/14 , B21D39/04 , Y10T29/49428 , Y10T29/49805
摘要： A fluid pressure reducing device having a core provided with a peripheral spiral groove and a pipe receiving the core. The portion of the pipe receiving the core is radially contracted so that the ridges of the spiral groove of the core intrude into the inner peripheral surface of the pipe, thereby to form a spiral passage between the pipe and the core. The pressure of a fluid is reduced as the latter flows through the spiral passage. This fluid pressure reducing device is easy to produce and permits an easy fine adjustment of the flow resistance.
摘要翻译： 一种流体减压装置，其具有设置有周边螺旋槽的芯和容纳该芯的管。 容纳芯的管的部分径向收缩，使得芯的螺旋槽的脊侵入管的内周表面，从而在管和芯之间形成螺旋通道。 当流体流过螺旋通道时，流体的压力降低。 该流体减压装置易于制造，并且允许容易地精细调节流动阻力。
-
公开(公告)号：US4916459A
公开(公告)日：1990-04-10
申请号：US26065
申请日：1987-03-16
CPC分类号： H01Q1/125 , H01Q1/005 , H01Q15/16 , H01Q19/132
摘要： A parabolic antenna dish has a circumferential reinforcement flange portion defined by a ridge line which is devoid of air holes and a mesh plate portion integrally connected to the inner periphery of the reinforcement flange portion, the mesh plate portion having as many air holes as possible formed in a region which is not smaller than 80% in terms of the radius of the radiowave reflecting surface.
摘要翻译： 抛物面天线盘具有由没有气孔的棱线限定的周向加强凸缘部分和与加强凸缘部分的内周一体连接的网板部分，网板部分具有尽可能多的气孔 在无线电波反射表面的半径方面不小于80％的区域。
-
公开(公告)号：US08659375B2
公开(公告)日：2014-02-25
申请号：US13364326
申请日：2012-02-02
IPC分类号： H01H1/66
CPC分类号： H01H36/0006 , H01H1/66 , H01H36/0033 , H01H51/287
摘要： A reed switch includes an envelope. First and second fixed terminal pieces are at one end of the envelope. A third fixed terminal piece is at another end of the envelope. A movable reed piece has a base end portion facing the one end portion of the third fixed terminal piece across a magnetic gap, a distal end portion to contact the first fixed terminal piece, and a movable contact portion. A first spring member has a base end portion secured to the first fixed terminal piece and a distal end portion to contact the movable contact portion. A second spring member has a base end portion secured to the second fixed terminal piece and a distal end portion to contact the movable contact portion. A third spring member has one and another end portions respectively secured to the movable reed piece and the third fixed terminal piece.
摘要翻译： 簧片开关包括一个信封。 第一和第二固定端子件在信封的一端。 第三固定端子件在信封的另一端。 可移动的筘片具有穿过磁隙的与第三固定端子的一个端部相对的基端部，与第一固定端子片接触的前端部和可动接触部。 第一弹簧构件具有固定到第一固定端子件的基端部分和与可动接触部分接触的远端部分。 第二弹簧构件具有固定到第二固定端子件的基端部分和与可动接触部分接触的远端部分。 第三弹簧构件具有分别固定到可动簧片和第三固定端子片上的另一端部。
-
公开(公告)号：US20120235774A1
公开(公告)日：2012-09-20
申请号：US13364326
申请日：2012-02-02
IPC分类号： H01H67/02
CPC分类号： H01H36/0006 , H01H1/66 , H01H36/0033 , H01H51/287
摘要： A reed switch includes an envelope. First and second fixed terminal pieces are at one end of the envelope. A third fixed terminal piece is at another end of the envelope. A movable reed piece has a base end portion facing the one end portion of the third fixed terminal piece across a magnetic gap, a distal end portion to contact the first fixed terminal piece, and a movable contact portion. A first spring member has a base end portion secured to the first fixed terminal piece and a distal end portion to contact the movable contact portion. A second spring member has a base end portion secured to the second fixed terminal piece and a distal end portion to contact the movable contact portion. A third spring member has one and another end portions respectively secured to the movable reed piece and the third fixed terminal piece.
摘要翻译： 簧片开关包括一个信封。 第一和第二固定端子件在信封的一端。 第三固定端子件在信封的另一端。 可移动的筘片具有穿过磁隙的与第三固定端子的一个端部相对的基端部，与第一固定端子片接触的前端部和可动接触部。 第一弹簧构件具有固定到第一固定端子件的基端部分和与可动接触部分接触的远端部分。 第二弹簧构件具有固定到第二固定端子件的基端部分和与可动接触部分接触的远端部分。 第三弹簧构件具有分别固定到可动簧片和第三固定端子片上的另一端部。
-
-
-
-
搜索结果
5 条记录 (耗时 0.016 秒)
