Fire escape – ladder – or scaffold – Ladder and platform – Platform with ladder as support
Patent
1993-09-21
1995-02-21
Ramierz, Ramon O.
Fire escape, ladder, or scaffold
Ladder and platform
Platform with ladder as support
248248, 292151, 292163, E06C 718
Patent
active
053907612
ABSTRACT:
The invention relates to a latch mechanism for coupling a horizontal platform at a selected vertical position on a supporting structure, wherein the mechanism includes a frame member having a plurality of walls arranged to define an enclosed area and a multi-sided bracket for engaging the supporting structure to couple the frame member to the supporting structure. A locking bar extends through the frame member and bracket to engage with the supporting member and is movable between a locking position and an unlocking position. A blocking plate is coupled to the frame member and positioned outside of the enclosed area and is movable by gravity between a blocking position to prevent movement of the locking bar to the unlocking position and a releasing position to allow movement of the locking bar to the unlocking position. The blocking plate includes a aperture aligned for receiving the locking means when in the unlocking position, which aperture is moved downwardly by gravity forces to present a solid portion in alignment with the locking bar when the locking bar is moved to the locking position, thus preventing the locking bar from being withdrawn into the blocking plate and out of the support structure.
REFERENCES:
patent: 2935033 (1960-05-01), Dunlap
patent: 3396817 (1968-08-01), Perry
patent: 4159838 (1979-07-01), Wilzig et al.
patent: 4262774 (1981-04-01), Chez
patent: 4793438 (1988-12-01), Perry
SONNY SCAFFOLDS, INC. "Better than the Best" Brochure, 1988.
SONNY'S FIRST* SCAFFOLDS Brochure, 1990 (Double Sided).
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