Title:
ANTI-TAMPER LOCK SCREW
Document Type and Number:
Japanese Patent JP2019100534
Kind Code:
A
Abstract:
To provide an anti-tamper lock screw capable of preventing tampering and looseness of a screw.SOLUTION: A rectangular groove 2 is dug along a rotational axis of a screw so as to make deeper than an inner diameter. An L-shaped metal 3 is inserted into the groove 2, a screw hole 10 is closed by an L-shaped bottom 5, and an L-shaped tip 4 is bent at a right angle, thereby preventing looseness. The dug groove 2 is equal to or less than 10% of the entire volume of the screw. In order to loosen the screw, the L-shaped tip is returned to an original state, and a nut is rotated with strong force.SELECTED DRAWING: Figure 3
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Inventors:
TADA TSUGUNAGA
Application Number:
JP2017241138A
Publication Date:
June 24, 2019
Filing Date:
November 28, 2017
Export Citation:
Assignee:
TADA TSUGUNAGA
International Classes:
F16B39/02; F16B41/00