Fire escape – ladder – or scaffold – With handrail or guard for ladder
Patent
1991-08-26
1992-07-21
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
With handrail or guard for ladder
182 46, 182113, A47C 912
Patent
active
051314940
ABSTRACT:
An effective riser reducer step device is provided, which consists of a mechanism placed upon a tread of a step of a staircase for reducing the height of a riser of the step. Another mechanism is for moving the riser height reducing mechanism to the tread of each successive step of the staircase, so that a physically impaired person suffering from atrophy, back and leg problems can ascend and descend the steps of the staircase.
REFERENCES:
patent: 3743051 (1973-07-01), Cramer
patent: 3841437 (1974-10-01), Caughey
patent: 3884327 (1975-05-01), Zigman
patent: 4113161 (1978-09-01), Manuszak
patent: 4601364 (1986-07-01), York
patent: 4844199 (1989-07-01), Nimz
Kroll Michael I.
Machado Reinaldo P.
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