Fire escape – ladder – or scaffold – Wall- or floor-attached – Ladder
Patent
1998-12-11
1999-12-14
Chin-Shue, Alvin
Fire escape, ladder, or scaffold
Wall- or floor-attached
Ladder
182106, 4496, E06G 300, E06C 718
Patent
active
060004940
ABSTRACT:
A drop-in stair assembly for a pool which comprises alternating treads and risers forming a series of steps extending between first and second side walls and with a pair of L-shaped connectors, each of the connectors having first and second arms and an elbow portion, the arms having a plurality of attachment locations such that the stair unit can be aligned in both a horizontal and a vertical fashion with respect to a pool wall and rim.
REFERENCES:
patent: D147350 (1947-08-01), Raffman
patent: 5065840 (1991-11-01), Cadigan
patent: 5333323 (1994-08-01), Aymes
patent: 5857226 (1999-01-01), Sonmer
Chin-Shue Alvin
Fincham Eric
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