Telescopic roadblock

6338311
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Inventors

Ho, Hoi Kwok

Application #

429640

Filed

Oct-29-1999

Published

Jan-15-2002

Current US Class

116/63C
256/1
256/13.1
404/10

International Classes

E01F 009/00

Field of Search

256/1 256/13.1 256/19 256/DIG. 404/9 404/10 116/63

Examiners

Browne; Lynne H.

Attorney, Agent or Firm

Banner & Witcoff, Ltd.

US Patent References

4197807   Collapsible traffic c...
4256050   Collapsible marker...
5305705   Collapsible road m...
5375554   Rocking road emer...
5488792   Mobile traffic warn...
5529429   Traffic control asse...

Referenced by:

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Citation

Cite This Patent

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Abstract
A telescopic roadblock comprises a base and a cone on the base. The cone is of telescopic structure defined by a plurality of inter-linked concentric hard conical sleeves having the same height and decreasing diameters with two adjacent hard conical sleeves being connected together by a soft material, whereby the cone can be easily compressed up to the same height as a hard conical sleeve. The hard conical sleeve with the smallest diameter is set on the topmost end. The outer surface of the cone is coated with reflectorizing material. The roadblock is small, convenient, eye-catching and easy to carry.
 
Claims
What is claimed is:

1. A telescopic roadblock comprising a base, an upper end, and a plurality of conical sleeves formed of a first material and spaced from each other along the length of the roadblock between said base and said upper end, each said conical sleeve comprising an upper terminal end, a lower terminal end and an outer diameter that increase from said upper terminal end to said lower terminal end, and a second material extending between adjacent conical sleeves along the length of the roadblock, wherein said second material is softer than said first material.

2. The telescopic roadblock according to claim 1 wherein said conical sleeves are concentric.

3. The telescopic roadblock according to claim 1 wherein said first material is plastic.



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.
 
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