Fire escape – ladder – or scaffold – Ladder with pivoted prop – Rear prop – laterally moving
Patent
1984-06-11
1985-06-25
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Ladder with pivoted prop
Rear prop, laterally moving
182171, 182189, E06C 120
Patent
active
045248494
ABSTRACT:
This invention relates to improvements in TRIPODS and more particularly to tripod connections.
The invention includes a link portion which links tripod leg portions either formed as legs for ground contact or as portions for engaging with legs for ground contact so as to enable the legs to be arranged into a tripod like configuration, converging toward one another and interconnected together adjacent an upper portion thereof.
The tripod can be in the form of shear legs, scaffolding supports, ladders and the like.
The tripod connection includes a link portion having one portion thereof pivotally connected in a captive manner with a first leg portion and second and third leg portions engaged also with the link portion and able to be positioned substantially remotely of the connection of the link and first leg portion on a curve portion whereby said link portion can be pivoted to a substantially "over center" position with a portion of said link portion remote from the pivot connection with said first leg portion bearing against said first leg portion with the second and third leg portions extending outwardly to provide the tripod like configuration, the assembly substantially securely mounted in that position.
At least the second and third leg portions are axially moveable relative to their connection with the link portion to engage on curved portions which assist in orientating said leg portions in the splay condition in use.
REFERENCES:
patent: 128073 (1872-06-01), Roseborough
patent: 234389 (1880-11-01), Cannon
patent: 785277 (1905-03-01), Smith
patent: 973103 (1910-10-01), Boyd
patent: 1789317 (1931-01-01), McLeish
patent: 1866175 (1932-07-01), Rogers
patent: 4366940 (1983-01-01), Vargas
Machado Reinaldo P.
Riddle Terrence Arthur
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