Fire escape – ladder – or scaffold – Horizontal traversing - actuation – control – or response – Holding means
Patent
1988-07-05
1989-10-31
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Horizontal traversing - actuation, control, or response
Holding means
182 63, 182141, E04G 120, E04G 124
Patent
active
048771074
ABSTRACT:
A mobile scaffolding system having a substantial rectangular rolling base which supports pump jack poles on which rides up and down pump jacks across which a platform is supported. The poles are supported by extensible supports when moved to a desired location and when a user mounts the platform, the poles extend downward to lock onto the support surface stabilizing the base and preventing further movement of the base.
REFERENCES:
patent: 198576 (1877-12-01), D'Amore
patent: 316375 (1885-04-01), Lieb
patent: 3156317 (1964-11-01), Lundeen
patent: 3323616 (1967-06-01), Best
patent: 3851728 (1974-12-01), Williams
patent: 4171033 (1979-10-01), Rust
patent: 4598794 (1986-07-01), Anderson
patent: 4641728 (1987-02-01), McCabe
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