A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A ladder safety lock disclosed herein includes a rod adapted for insertion through a ladder rung and at least one hinged flap attached an end of the rod that is configured for attachment to a free-standing secure structure, such as a portion of a roof or wall.
A ladder safety lock disclosed herein includes a rod adapted for insertion through a ladder rung and at least one hinged flap attached an end of the rod that is configured for attachment to a free-standing secure structure, such as a portion of a roof or wall.
LADDER SAFETY LOCK SYSTEM
FORSETH CHRIS F (author)
2020-04-09
Patent
Electronic Resource
English
IPC:
E06C
LADDERS
,
Leitern
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