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Working ladder allowing enhancement of supporting function
A working ladder allowing enhancement of a supporting function comprises a pair of ladder frame units and a support rod. Each ladder frame unit comprises a first vertical rod, a second vertical lord, a bottom rod connected to the second vertical rod, and a plurality of step rods all connected between the first vertical rod and the second vertical rod. A first length of the first vertical rod is greater than a second length of the second vertical rod. The bottom rod can be operated from a first position to a second position. The support rod can cooperate with the bottom rod to allow operation from a support position to a closure position. Therefore the working ladder can be erected vertically on the ground or oppositely unfolded according to the height of use and has optimal supporting stability.
Working ladder allowing enhancement of supporting function
A working ladder allowing enhancement of a supporting function comprises a pair of ladder frame units and a support rod. Each ladder frame unit comprises a first vertical rod, a second vertical lord, a bottom rod connected to the second vertical rod, and a plurality of step rods all connected between the first vertical rod and the second vertical rod. A first length of the first vertical rod is greater than a second length of the second vertical rod. The bottom rod can be operated from a first position to a second position. The support rod can cooperate with the bottom rod to allow operation from a support position to a closure position. Therefore the working ladder can be erected vertically on the ground or oppositely unfolded according to the height of use and has optimal supporting stability.
Working ladder allowing enhancement of supporting function
ZHANG SHIJIE (author)
2016-01-06
Patent
Electronic Resource
English
IPC:
E06C
LADDERS
,
Leitern
Working ladder general reinforcing supporting leg fixing ladder head
| European Patent Office | 2021