Fire escape – ladder – or scaffold – Wall- or floor-attached – Ladder
Reexamination Certificate
2006-08-15
2006-08-15
Vasudeva, Ajay (Department: 3617)
Fire escape, ladder, or scaffold
Wall- or floor-attached
Ladder
C182S106000, C114S362000
Reexamination Certificate
active
07090049
ABSTRACT:
The aquatic ladder was designed for ease of use, rather than ease of storage. It has wide, deep treads, arranged like a staircase, with side and upper railings which make it easy to enter or exit the water, even by elderly people, tired individuals, those carrying aquatic equipment, such as SCUBA gear or water skis, and, even, by pets. In the preferred embodiment, the aquatic ladder includes upper railings which each have an inverted “U” shape, and the distal end of those railings have hinged brackets for mounting the aquatic ladder to an object to be boarded. In an alternative embodiment, the aquatic ladder is mounted on a sliding rail, such that it can be raised, vertically, from the water, when it is not being used. The ladder is preferably made from aluminum, although it can be made of other materials, such as steel (e.g., stainless or galvanized), fiberglass, plastic, or other composites.
REFERENCES:
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patent: 3446309 (1969-05-01), Davis et al.
patent: 3973646 (1976-08-01), Martinez
patent: D243953 (1977-04-01), Gannon
patent: 4495883 (1985-01-01), Hoy
patent: D411019 (1999-06-01), Curtis
patent: 2005/0077106 (2005-04-01), Grundler
patent: 2005/0274574 (2005-12-01), Adair
Asman Sanford J.
Vasudeva Ajay
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