Fire escape – ladder – or scaffold – Self-sustaining – Scaffold horse
Patent
1988-04-15
1989-06-06
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Self-sustaining
Scaffold horse
182226, B27B 2100
Patent
active
048363332
ABSTRACT:
A support element for an end of a board, intended for use in pairs to form a raised working platform or bench, comprises a first upwardly-facing support surface adapted to engage the underside of the board at its end, a second downwardly facing support surface parallel to and spaced vertically from the plane of the first supporting surface by a distance equal to the thickness of the board and spaced horizontally from the first supporting surface to engage the upper surface of the board a predetermined distance from its end, and at least one ground engaging surface so positioned that, in use, the support element engages the ground below the first supporting surface, the upwardly and downwardly facing support surfaces being provided by generally parallel channel-like bars laterally spaced from each other.
REFERENCES:
patent: 1153470 (1915-09-01), Wagner
patent: 1908858 (1933-05-01), O'Kane
patent: 2416950 (1947-03-01), Pohrman
patent: 3139951 (1964-07-01), Clayton
patent: 3212606 (1965-10-01), Spaw
patent: 3809183 (1974-05-01), Lowd et al.
patent: 4008786 (1977-02-01), Canavan
patent: 4134473 (1979-01-01), Prior
patent: 4248326 (1981-02-01), Hansen et al.
patent: 4757877 (1988-07-01), Twigger
Machado Reinaldo P.
Romanski Lon H.
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