Fire escape – ladder – or scaffold – Ladder and platform – Platform with ladder as support
Patent
1996-03-20
1998-01-06
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Ladder and platform
Platform with ladder as support
182222, 182113, E04G 310
Patent
active
057044490
ABSTRACT:
A scaffolding plank for a framework scaffolding or a suspended scaffolding, which has its object to eliminate a clearance in all directions of the scaffolding plank and to detachably mount a stopper at the back of a hook on a lateral member with a one-touch control.
There is comprised of a horizontal plank body 6, a plurality of hooks 9, 10, 11, 12 provided at both front and rear ends of the plank body, a plurality of notches 13, 14a, 14b, 15, 16a, 16b likewise provided at both front and rear ends of the plank body, and a stopper mechanism S provided below each hook to be freely moved in and out, said front hook being provided on the same axis where the rear notch is provided, said rear hook being provided on the same axis where the front notch is provided.
REFERENCES:
patent: 1919016 (1933-07-01), Geer
patent: 3509966 (1970-05-01), Sarno
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