A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Non-slip ladder base device
A ladder base device having a base platform and a pair of socket-like receptacles for receiving the ends of a pair of ladder rails. The receptacles are pivotally attached to the platform and the platform is reversible with different surfaces for frictional engagement with different types of ground or floor surfaces on each side.
Non-slip ladder base device
A ladder base device having a base platform and a pair of socket-like receptacles for receiving the ends of a pair of ladder rails. The receptacles are pivotally attached to the platform and the platform is reversible with different surfaces for frictional engagement with different types of ground or floor surfaces on each side.
Non-slip ladder base device
MARKLEY MARTIN J (author) / LOSITO JOSEPH J (author)
2015-12-31
Patent
Electronic Resource
English
IPC:
E06C
LADDERS
,
Leitern