Fire escape – ladder – or scaffold – Safety device for ground-supported ladder – Terminal foot or shoe
Patent
1994-05-04
1995-06-06
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Safety device for ground-supported ladder
Terminal foot or shoe
182201, E06C 744
Patent
active
054214297
ABSTRACT:
A ladder having legs having lower ends, has a safety foot pivotally connected to each lower end. Each safety foot has a hinge having two plates one of which is secured to the ladder foot and the other of which is secured to the lower end of the ladder leg. One of the hinge plates supports a stop surface that contacts a stop surface supported by the other hinge plate when the foot is at right angles to the ladder leg. The foot is releasably retained in a position parallel to the ladder leg. The releasible retainer is hook and eye fabric one element of which is connected to the lower end of the ladder leg and the other element of which is connected to the foot. The hinge plate is integral with a member that extends along the lower end of the leg, one element of the hook and eye fabric being fixedly secured at one end between this member and the leg and being free at another end thereof. One of the stop surfaces is provided by a member that is L-shaped to surround the hinge. This L-shaped member is disposed below the lower end of the leg. The ladder can be a stepladder, in which case a ground engaging edge of the foot is inclined at an acute angle to the axis of the hinge.
REFERENCES:
patent: 2008582 (1935-07-01), Fredriksen
patent: 3012628 (1961-12-01), Zumbaum
patent: 3025926 (1962-03-01), Vives
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