US Patent 11761252 Lower gate stopper structure
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US Patent 11761252 Lower gate stopper structure
Article
Patent abstract
An embodiment lower gate stopper structure includes a stopper unit configured to protrude from an upper end of a groove positioned adjacent to an inner surface of a gate, a rack unit connected to the stopper unit and configured to move longitudinally to cause the stopper unit to protrude, and a controller configured to selectively control protrusion of the stopper unit based on an open or closed state of the gate.
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Patent Jurisdiction
Patent Number
Patent Inventor Names
Ki Hyun Cho
Sang Hyun Lee
Date of Patent
September 19, 2023
Patent Application Number
17376807
Date Filed
July 15, 2021
Patent Citations
Patent Primary Examiner
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