Domestic hydraulic stepladder characterized by infinitely variable height for steps and platform
AssigneeHitachi High -Tech Corpo
InventorVENUGOPALAN CHENICHERI VADAKKIL
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AssigneeHitachi High -Tech Corpo
InventorVENUGOPALAN CHENICHERI VADAKKIL
Estimating the term…
A domestic hydraulic stepladder comprising of table top type wide area platform for standing and working at different high levels from the floor and said platform being split in the middle into two halves each half being separately mounted on two multi stage telescopic hydraulic cylinders, all four mentioned telescopic cylinders carried on a common base and being connected through a 3-10 position hydraulic valve to a small conventional air pre-pressurised hydro-pneumatic accumulator accompanied with a mini air pump for air pre-pressure control, for manual climbing of the stepladder a person gets up on the platform when both halves are at the same level at the lowest point of the stepladder by placing one foot on each of the half portions of the platform, then operating the 3-position valve and by taking appropriate stance on the platform achieves the raising/standing still/lowering of the platform.
1-15. (canceled)
A domestic hydraulic stepladder characterized by infinitely variable height for steps and platform, comprising:
Dependencies are inferred from the claim text.