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公开(公告)号：US5253667A
公开(公告)日：1993-10-19
申请号：US31969
申请日：1993-03-16
申请人： Ching-Pao Chung
发明人： Ching-Pao Chung
CPC分类号： E04H15/36
摘要： A shrinkable tubular frame is composed of a plurality of curved tubes having the same length and curvature but different diameter for shrinking in a largest-diameter curved tube one after another so as to be become very short when being shrunk. Each two curved tubes are locked by a fixing unit when being extended out. A winding unit for winding back a rope extended in the frame so as to pull the other curved tubes, except a left one, to shrink in the left largest-diameter tube after being extended out.
摘要翻译： 可收缩管状框架由具有相同长度和曲率但不同直径的多个弯曲管组成，用于在最大直径的弯曲管中一个接一个地收缩，以便在收缩时变得非常短。 当两个弯曲管被伸出时被固定单元锁定。 用于卷绕延伸在框架中的绳索的卷绕单元，以便拉出除了左侧之外的其它弯曲管，以在伸出后在左侧最大直径的管中收缩。
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公开(公告)号：US5277524A
公开(公告)日：1994-01-11
申请号：US26285
申请日：1993-03-04
申请人： Ching-Pao Chung
发明人： Ching-Pao Chung
CPC分类号： B23B39/162 , B25H1/0042 , B26F1/16 , Y10T408/3811 , Y10T408/385 , Y10T408/5647 , Y10T408/65
摘要： A puncher comprising two drills held on chucks attached on shafts combined with gears provided in two front seats and a rear seat able to be changed in their position so as to change the distance between the two drills, the front seats and the rear seat being connected with a main seat which is possible to be moved up and down by means of a vertical threaded rod and a support rod so as to lower down the two drills to punch holes in one of many distances adjustable in papers placed on a bottom base and pinched immovable in a pincher on the base.
摘要翻译： 一种冲孔机，包括两个钻头，夹持在卡盘上，与安装在两个前排座椅上的齿轮相结合的卡盘和一个能够改变其位置的后座，以便改变两个钻头之间的距离，前排座椅和后座椅连接 具有可以通过竖直螺杆和支撑杆上下移动的主座椅，以便将两个钻孔机下降至在位于底部基座上的纸张中可调节的许多距离之一的打孔，并且被夹紧 在基地不固定的捏。
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