Fire escape – ladder – or scaffold – Stackable
Reexamination Certificate
2006-03-28
2006-03-28
Chin-Shue, Alvin (Department: 3634)
Fire escape, ladder, or scaffold
Stackable
C182S151000
Reexamination Certificate
active
07017710
ABSTRACT:
A scaffolding element used in conjunction with an upright alignment member, such as a pole. The scaffolding element having at least one connector member at each end portion thereof. The opposing connector members are oriented transversely relative to one another, such that the connector members of adjacent scaffolding elements can interlock at right angles to one another, forming a structure of interlocking scaffolding elements. The connector members can be formed from a metal plate or can be a casting, for example.
REFERENCES:
patent: 4497271 (1985-02-01), Gloystein
patent: 4821844 (1989-04-01), Huffman et al.
patent: 5217314 (1993-06-01), Perruelle
patent: 6450291 (2002-09-01), Ono
patent: 117643 (1984-09-01), None
patent: 2006911 (1979-05-01), None
Booysen Pieter Wouter
Seitz Michael Walter
Chin-Shue Alvin
Pauley Petersen & Erickson
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