Scaffolding jack system

Details Scaffolding jack system Scaffolding jack system

1994-04-01

1995-01-31

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Self-sustaining

182113, 49 57, E04G 114

Patent

active

053852150

ABSTRACT:
The present invention provides for an improved scaffolding jack system. The present invention provides the top bar that connects the inside vertical posts to the outside vertical posts to have a slidable gate received within the top bar. In a closed position the sliding gate connects the top bar to the inside vertical post and can bear a normal load. In an open position, the sliding gate slides into the top bar to permit a worker to pass easily.

REFERENCES:
patent: 2635717 (1953-04-01), Albrecht et al.
patent: 3490559 (1970-01-01), Torch et al.
patent: 3850264 (1974-11-01), Salinas
patent: 4438596 (1984-03-01), Jones et al.
patent: 5069309 (1991-12-01), Swiderski et al.

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