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1. 发明授权

US3848851A Jacking device 失效
标题翻译：包装设备
公开(公告)号：US3848851A
公开(公告)日：1974-11-19
申请号：US39220873
申请日：1973-08-28
申请人： DELL HOLDINGS LTD
发明人： ELIAS M
IPC分类号： B66F1/06 , E04G21/32 , E04G25/06 , B66F1/04
CPC分类号： B66F1/06 , E04G21/3233 , E04G25/06 , E04G25/061 , E04G2005/148 , E04G2025/045
摘要： A jacking device consisting of first and second tubular members which are telescoped with respect to one another and provided with a simple and inexpensive means for adjusting the length thereof. The device also includes a third tubular member telescoped with respect to the first tubular member and a spring for urging the third tubular member to an extended position with respect to the first tubular member. Simplicity in the adjustment means is achieved by forming a series of longitudinally spaced passages in the second tubular member and forming a support shoulder which includes an annular collar on the other tubular member at one end thereof. The adjustment device consists of a bracket and a lever arm pivotally mounted on the bracket. In use, one end of the lever arm is located within one of the longitudinal passages of the second tubular member and the free end of the bracket is mounted on the support shoulder of the first tubular member. The lever arm is then pivoted about the fulcrum mounting on the bracket to cause the free end of the lever arm to engage the second tubular member and to move the second tubular member outwardly with respect to the first tubular member, the bracket acting as a support for the fulcrum point of the lever arm. A simple mounting for the third telescopic member is achieved by forming rearwardly inwardly directed waist portions in the first tubular member and the third tubular member and locating a pair of discs outwardly from each waist member and retaining each disc against a predetermined movement with respect to one another by extending a bolt therebetween.
摘要翻译：一种由第一和第二管状构件组成的顶起装置，其相对于彼此伸缩并设置有用于调节其长度的简单且便宜的装置。该装置还包括相对于第一管状构件伸缩的第三管状构件和用于将第三管状构件相对于第一管状构件推动到延伸位置的弹簧。通过在第二管状构件中形成一系列纵向间隔开的通道并形成一个支撑肩部来实现调节装置的简单性，该支承肩部在其另一个管状构件的一端包括环形套环。调节装置由支架和可枢转地安装在支架上的杠杆臂组成。在使用中，杠杆臂的一端位于第二管状构件的一个纵向通道内，托架的自由端安装在第一管状构件的支撑肩上。杠杆臂然后绕安装在支架上的支点枢转，使得杠杆臂的自由端接合第二管状构件并使第二管状构件相对于第一管状构件向外移动，支架用作支撑件用于杠杆臂的支点。通过在第一管状构件和第三管状构件中形成向后向内的腰部并将一对盘从每个腰部构件向外定位并将每个盘保持抵抗相对于一个的一个预定的运动来实现第三伸缩构件的简单安装另一个通过在其间延伸螺栓。

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