Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Trestle
Patent
1993-11-18
1994-12-13
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Unitary foldable, rigid scaffold or ladder
Trestle
182225, E04G 132
Patent
active
053722183
ABSTRACT:
A mini portable scaffolding frame having a structure and design such that it can receive and hold a removable extension member. When two scaffolding frames and its extensions are positioned in a spaced apart relation to receive the placement of wooden planks thereon, a scaffolding system is provided which can be used in small indoor areas which normally could not receive standard scaffolding structures. Each of the frame members includes a pair of rectangular sections pivotally mounted to each other. A base member is fixed to each of the rectangular sections for receiving and holding a detachable extension member.
REFERENCES:
patent: 4454939 (1984-06-01), Wellman
patent: 4609070 (1986-09-01), Parps et al.
Bojanowski Richard F.
Chin-Shue Alvin C.
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