Patent Publication Number: US-6338311-B1

Title: Telescopic roadblock

Description:
The present invention relates to a telescopic roadblock. 
     When one road is in a special period or an automobile needs repairing, a roadblock is usually set to make sure of the safety of other automobiles and pedestrians as well. The conventional roadblock is not eye-catching and in convenient to carry or move because of its big size and weight. 
     The objective of the present invention is to overcome the above disadventages and provide a roadblock which is small, eye-catching and easy to carry. When it is not in use, it can be folded and put into an automobile. When in use, it can be stretched out and put on the road for safety. 
     Accordingly, to achieve the above objective, there is provided an telescopic roadblock comprising a base and a cone on the base. The cone is of telescopic structure defined by a plurality of interlinked concentric hard conical sleeves having the same height and decreasing diameters with soft material ( 4 ) connecting two adjacent hard conical sleeves together and the hard conical sleeve with the smallest diameter being set on the topmost end. 
     The present invention is advantageous over the prior art in that soft material is used to connect the hard conical sleeves to form a telescopic cone so that the clasping means for connecting two sleeves is no longer necessary and the roadblock has a simple structure and a small size, and is convenient to carry, operate, maintain and use. 
    
    
     The above objective and advantages of the present invention will become more apparent by describing in detail a preferred embodiment thereof with reference to the accompany drawings in which: 
     FIG. 1 is a perspective view showing a telescopic roadblock when in use. 
     FIG. 2 is a perspective view showing a telescopic roadblock when it is not in use. 
    
    
     Referring to FIG. 1, it is a perspective view showing the structure of a telescopic roadblock comprising an underneath base  1  and a telescopic cone on the base. The cone is of telescopic structure defined by a plurality of inter-linked concentric hard conical sleeves  3  having the same height and decreasing diameters with two adjacent hard conical sleeves  3  being connected by a soft material  4  and the hard conical sleeve with the smallest diameter being set on the topmost end. 
     The base  1  is made of hard material such as plastics, engineering plastics, wood and so on. The hard conical sleeve  3  is made of plastics, engineering plastics, etc. The soft conical sleeve  4  used to connect the hard conical sleeves is made of canvas, nylon, chemical fiber, plastics, etc. 
     The first conical sleeve above the base  1  may be the hard conical sleeve  3  or the soft conical sleeve  4  used for connecting. 
     To make the roadblock eye-catching, reflectorizing material or fluorescent meterial is coated on the outer surface of the roadblock, making it reflecting in sun or light with an eye-catching effect. Therefore, the roadblock can be used in daytime and at night as well. 
     Not only by coating reflectorizing material on the outer surface of the roadblock, but also by making the hard conical sleeves and the soft conical sleeves with reflectorizing material, can the eye-catching effect be obtained. The reflectorizing cloth material available on the market can be used to make the soft material  4 . 
     The soft material  4  and the hard conical sleeve  3  can be connected by different ways such as adhereing or pin connection. 
     FIG. 2 is a perspective view showing a telescopic roadblock when it is not in use. In this case, all the conical sleeves  3  are pressed down one by one. As all the conical sleeves have the same height, the telescopic roadblock can be pressed to the height of one hard conical sleeve  3 . 
     The present invention which is of novel structre is beautiful and practical. When in use, the conical sleeves  3 , 4  can be pulled out one by one to form a cone. When it is not in use, the conical sleeves  3  and  4  are pressed down one by one. As all the conical sleeves have the same height, the cone can be easily pressed to the height of a hard conical sleeve  3 . 
     Being made of plastics and chemical fiber, the roadblock is convenient for any drivers and road maintenaner.