Auxiliary safety step for round ladder rungs

Details Auxiliary safety step for round ladder rungs Auxiliary safety step for round ladder rungs

1988-07-18

1989-02-14

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Ladder and platform

Platform with ladder as support

182228, E06C 708

Patent

active

048040630

ABSTRACT:
An auxiliary safety step for a ladder of the type having fluted round rungs defining a plurality of circumferentially spaced longitudinal ribs. A traction body defining a step tread includes an arcuate surface along the underside adapted to embrace the ladder rung. A pair of parallel longitudinal ribs extending laterally outward the arcuate surface interfit into the grooved recesses between adjacent ribs of the rung. A set screw secures the interfit position against separation. Support bars pivotally mounted on the body are adapted for attachment to a similar support bar of a second auxiliary step on a successive rung. The interconnected bars cooperate in stabilizing adjoining safety steps against inadvertent rotation relative to the rungs on which they are placed.

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patent: 4241807 (1980-12-01), McKenna
patent: 4437544 (1984-03-01), Anderson et al.

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