Fire escape – ladder – or scaffold – Wall- or floor-attached – Spring-biased pivoted step or ladder
Patent
1975-09-22
1976-10-19
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Wall- or floor-attached
Spring-biased pivoted step or ladder
280166, B60R 300
Patent
active
039865037
ABSTRACT:
A step apparatus comprised of a bracket and a step assembly is adapted to be affixed to a machine such as an excavator. The step assembly is mounted in the bracket and pivotable to first and second positions relative to the bracket. A resilient means associated with the step assembly urges the step assembly toward the second position. Locking means are operatively connected with the bracket and the step assembly. The step assembly is urged in a first direction while in its first position relative to the bracket by the resilient means to engage the locking means and secure the step assembly in its first position. The step assembly is movable in a second direction while in its first position to disengage the locking means to allow the step assembly to be urged to its second position.
REFERENCES:
patent: 835992 (1906-11-01), Truax
patent: 2417987 (1947-03-01), McFarland
patent: 3561713 (1971-02-01), Berkowitz
Caterpillar Tractor Co.
Machado Reinaldo P.
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