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    • 61. 发明授权
    • Lift unit for weight distributing trailer hitch
    • 起重机配重拖车挂车
    • US4815752A
    • 1989-03-28
    • US124884
    • 1987-12-02
    • David A. YoungJames L. Mellow
    • David A. YoungJames L. Mellow
    • B60D1/34B60D1/14
    • B60D1/247B60D1/345Y10T403/608
    • The lift unit comprises a bracket portion that is secured to the trailer tongue and a hinge portion that pivots on the bracket portion about a horizontal axis to raise and lower a chain for flexing and relaxing a spring bar that when flexed, serves to transfer a portion of the tongue weight to the towing vehicle. A flat rectangular member is eccentrically mounted on the side of the hinge portion to hang in the 6:00 o'clock position unless acted upon by influences other than gravity. When the hinge portion is operated to raise the chain and thereby flex the spring bar, a longer side of the rectangular member abuts and rides along the edge of a side of the bracket portion resulting in the member being swung clockwise to about the 8:00 o'clock position when full chain elevating position is reached. At this time one corner of the member drops into a notch in the bracket portion and prevents the hinge portion from being operated in the direction of chain lowering. The member is kept in this position by passing a tethered pin through the member and the hinge. When the pin is removed, the member can be swung further clockwise to about 4:00 o'clock to enable the chain to be lowered. The edge of the bracket's side acts on the member during chain lowering to swing the member counterclockwise back to 6:00 o'clock thereby automatically resetting the member for automatic locking when the chain is again raised.
    • 提升单元包括固定到拖车舌部的支架部分和铰链部分,该铰链部分围绕水平轴线枢转在支架部分上以升高和降低链条,用于挠曲和松弛弹簧杆,当弯曲时,弹簧杆用于将部分 的舌头重量到牵引车。 平面矩形构件偏心地安装在铰链部分的侧面,以悬挂在6点钟位置,除非被重力以外的影响所影响。 当铰链部分被操作以升高链条并因此使弹簧杆弯曲时,矩形构件的较长侧部沿着支架部分侧面的边缘抵接并骑行,导致构件顺时针方向摆动到大约8:00 达到全链升降位置时的位置。 此时,构件的一个角落入支架部分的凹口中,并且防止铰链部分在链条降低的方向上操作。 通过将栓塞销通过构件和铰链将构件保持在该位置。 当销被移除时,构件可以顺时针转动到大约4点钟,以使链条能够下降。 在链条下降期间,支架侧边缘作用在构件上,使构件逆时针摆动回到6点钟,从而在链条再次抬起时自动复位构件以进行自动锁定。
    • 62. 发明授权
    • Hand surgery table
    • 手术台
    • US4807864A
    • 1989-02-28
    • US876878
    • 1986-07-16
    • David A. Young
    • David A. Young
    • A61B19/00A61G13/12A61G13/00
    • A61G13/12A61G13/0045Y10T403/11Y10T403/32803Y10T403/7015
    • A hand surgery table having a platform (3) and a universal-type joint (6) connecting that platform (3) to a base (5) whereby the disposition of the platform (3) relative to the base (5) can be varied to suit requirements. A lock member (13) is provided to releasably secure the platform (3) in a selected disposition. The platform (3) is releasably connectable to the support structure (2) of the table so that it can be separated for cleaning or disposal, and a frangible detent (26) may be provided to show that the platform (3) has been previously used. A plurality of column supports (41) are attachable to the platform (3) at any of a plurality of positions across the upper surface of the platform (3) and at least some of those supports (41) have a contoured upper end. The column supports (41) cooperate with holes (31) in the platform (3) which also serve as drainage holes.
    • PCT No.PCT / AU85 / 00227 Sec。 371日期:1986年7月16日 102(e)日期1986年7月16日PCT提交1985年9月17日PCT公布。 出版物WO86 / 01711 PCT 日期:1986年3月27日。手术台具有将平台(3)连接到基座(5)的平台(3)和通用型接头(6),由此平台(3)相对于 基座(5)可以根据要求而变化。 提供锁定构件(13)以可选地将平台(3)固定在选定的布置中。 平台(3)可释放地连接到工作台的支撑结构(2),使得其可以被分离用于清洁或处理,并且可以提供易碎的制动器(26)以示出平台(3)已经被预先 用过的。 在平台(3)的上表面上的多个位置中的任何位置处,多个列支撑件(41)可附接到平台(3),并且这些支撑件(41)中的至少一些具有轮廓的上端。 柱支撑件(41)与平台(3)中也用作排水孔的孔(31)配合。
    • 64. 发明授权
    • Trailer hitch
    • 拖车搭便车
    • US4211427A
    • 1980-07-08
    • US949777
    • 1978-10-10
    • David A. YoungBruce S. Kimball
    • David A. YoungBruce S. Kimball
    • B60D1/34B60D1/00
    • B60D1/247B60D1/345Y10T403/32483
    • A weight distribution trailer hitch which has a pair of spring rods pivotally connected at their forward ends on vertical-axis pivot means adjacent the hitch ball and at their rear ends in a tension relation to the trailer tongue. Cooperating means on the spring rods and the pivot means prevent the axial displacement of the forward end portions of the spring rods from the pivot means and includes a retaining clip mounted on the pivot means. The retaining clip has a leg that is biased radially inwardly into the pivot means and into a groove formed in the spring rod. Insertion of the end portion into the pivot means forces the leg outwardly which then is urged into the groove when they are aligned.
    • 一种重量分配拖车牵引装置,其具有一对弹簧杆,弹簧杆在其前端处在垂直轴枢轴装置上相对于挂车球枢转地连接,并且在其后端处以与牵引车舌紧张的关系枢转地连接。 弹簧杆和枢转装置上的协作装置防止弹簧杆的前端部从枢转装置的轴向位移,并且包括安装在枢转装置上的保持夹。 保持夹具有径向向内偏压到枢转装置中并且形成在弹簧杆中的凹槽中的腿部。 将端部插入枢转装置中将腿部向外推动,然后当腿部对齐时,该腿被推入槽中。