Safe foothold apparatus for platform

The present invention relates to a safe foothold apparatus for a platform, wherein a foothold plate protrudes from and is retracted into the platform by moving along a curved rotational route so that the foothold plate is re-retracted into the platform safely due to the operation structure even when...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YUN, Sung Jun, KIM, Seo Jun
Format:	Patent
Sprache:	eng
Schlagworte:	ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE BLASTING CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES ENGINEERING ELEMENTS AND UNITS EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR FIXED CONSTRUCTIONS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEASURING MEASURING ANGLES MEASURING AREAS MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICS RAILWAY SYSTEMS RAILWAYS TESTING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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