Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Trestle
Reexamination Certificate
2006-08-15
2010-12-14
Chin-Shue, Alvin C (Department: 3634)
Fire escape, ladder, or scaffold
Unitary foldable, rigid scaffold or ladder
Trestle
C280S035000
Reexamination Certificate
active
07849966
ABSTRACT:
A collapsible stand includes a platform for supporting a machine, two first legs each having a top end pivotally connected to the platform, two second legs each of which is pivotally connected to each first leg and has a top part slidably inserted through a sleeve of the platform, at least one springy or biasing member and a locking device. The springy or biasing member is retained in a sleeve-like or coaxial manner on retained in a sleeve-like manner one of the second legs. The locking device is connected to the platform for fixing the second legs in position after spreading the stand open such that the first legs and second legs support the platform at a predetermined height.
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Bacon & Thomas PLLC
Chin-Shue Alvin C
Rexon Industrial Corporation Ltd.
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