Closed force transmission device and safety door lock using same
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United States of America Patent
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Sep 26, 2017
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app pub date -
Mar 15, 2012
filing date -
Feb 24, 2012
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Abstract
The present invention relates to a closed force transmission device in which an insertion depth of a latch bolt inserted into a latch bolt insertion groove can be adjusted to improve safety and components are simplified to allow for ease of assembly and to improve durability. The present invention also relates to a safety door lock using the device. The closed force transmission device of the present invention includes: a cylindrical body housing of which both sides are opened to penetrate a door; a main body slidably arranged within the body housing such that the main body moves in a straight line direction by the force applied from an external source, the main body having at least one tilt surface and a main body movement space formed orthogonally to the straight movement direction in a portion corresponding to the tilt surface.
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