Title:
SPIKE STRIP
Document Type and Number:
WIPO Patent Application WO/2017/217743
Kind Code:
A1
Abstract:
A spike strip according to the present invention comprises: a base block seated on the surface of a road; a steel spike which has an upper end portion formed sharply, is perpendicularly erected on the upper face of the base block, has an inner space having a vertical length therein, has, formed on the lateral face thereof, a withdrawal hole which communicates with the upper side of the inner space and an engaging hole which communicates with the lower side of the inner space; a rotation block which is inserted into the inner space in a liftable and lowerable structure, and can rotate around a central axis in a horizontal direction; a hook which is formed in a curved shape to have one side joined to the upper face of the rotation block, and the other side facing the withdrawal hole, and is withdrawn to the outside of the steel spike through the withdrawal hole when the rotation block is lifted along the inner space; an elastic piece which has one side joined to the rotation block and the other side having an engaging protrusion hooked onto the upper side of the engaging hole, is made of an elastic material of a reference level or higher, and is configured to enable the engaging protrusion to be inserted into the inner space by an external force; and an elastic means which applies an upward elastic force to the rotation block.
Inventors:
KIM IL SUB (KR)
Application Number:
PCT/KR2017/006155
Publication Date:
December 21, 2017
Filing Date:
June 13, 2017
Export Citation:
Assignee:
KIM IL SUB (KR)
International Classes:
E01F13/12
Foreign References:
| KR200389218Y1 | 2005-07-08 | |||
| KR101010276B1 | 2011-01-24 | |||
| CN201567540U | 2010-09-01 | |||
| KR100456416B1 | 2004-11-10 | |||
| US5588774A | 1996-12-31 |
Attorney, Agent or Firm:
MAJOR PATENT AND LAW FIRM (KR)
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