Supporting device for ladders

Details Supporting device for ladders Supporting device for ladders

1979-11-30

1982-11-16

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Ladder

With spacer means

182107, 182121, 182200, 248238, E06C 714, E06C 744, E06C 748

Patent

active

043591388

ABSTRACT:
A supporting device for ladders which has two supports which can be connected with rungs of the ladder by two connecting devices. The connecting devices form at least one pair of connecting parts which receive two rungs of the ladder in opposite direction, the connecting parts being at a variable distance from each other.

REFERENCES:
patent: 1452182 (1923-04-01), Butrum
patent: 2327317 (1943-08-01), Randall
patent: 2881028 (1959-04-01), Baird
patent: 2903086 (1959-09-01), Chubbs
patent: 3028929 (1962-04-01), Chubbs
patent: 3072218 (1963-01-01), Peters
patent: 3146854 (1964-09-01), Terwilliger
patent: 3331577 (1967-07-01), Grunwaldt
patent: 3568801 (1971-03-01), Werner
patent: 3713510 (1975-01-01), O'Dell
patent: 3941341 (1976-03-01), Brogdon

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