Fire escape – ladder – or scaffold – Safety device for ground-supported ladder – Terminal foot or shoe
Patent
1986-04-14
1987-08-04
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Safety device for ground-supported ladder
Terminal foot or shoe
182 46, 182201, E06C 746
Patent
active
046839801
ABSTRACT:
A load leveling device for a ladder in the form of a compensator boot which slips onto a lower end of one of the legs of the ladder. The boot includes a vertically elongated block of homogeneous, molded plastic or rubber material and a vertically extending socket in the block opening in the upper end face of the block. The socket has cross-sectional dimensions sized to allow the lower end of the leg of the ladder to slide into the socket and has a blind lower end spaced vertically from the lower end face of the block by a distance compensating for the angle of the associated roof surface. The lower end face of the block is centrally downwardly pointed to form a central apex edge, and the end face portions on the opposite sides of the central apex edge are each skewed, but in opposite senses, to match the roof angle so that the block will present a flat contact surface complementary to the roof angle irrespective of the sense in which the boot is applied to the ladder leg, irrespective of which ladder leg it is applied to, and irrespective of which side of the roof ridge the ladder is positioned on.
REFERENCES:
patent: 755713 (1904-03-01), Shanahan
patent: 1431068 (1922-10-01), Waney
patent: 1600103 (1926-09-01), Evans
patent: 1631513 (1927-06-01), Berry
patent: 2138171 (1938-11-01), Johnson
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