Appeal No. 2002-1583 Page 4
Application No. 09/299,678
telescoping support member inserted therein, said telescoping support member
secured by a rung rail locking mechanism that allows for rung rail configurations
of variable length and having a surface engaging foot pivotally attached to an
end thereof for securably engaging a ladder support surface;
a vertical support assembly comprising a first and second parallel housing
support members having at least one stabilizing cross member traversing
between said housing support members and secured thereto, said housing
support members having a tubular cross-section with a telescoping support
member inserted therein, said telescoping support member secured by a support
rail locking mechanism that allows for housing support member configurations of
variable length and having a surface engaging foot pivotally attached to the end
thereof for securably engaging a ladder support surface;
a top plate having a front edge opposite a rear edge wherein said front
vertical step assembly is pivotally attached to said front edge and said rear
vertical support assembly is pivotally attached to said rear edge;
a first folding stabilizer cross member in combination with a second folding
stabilizer cross member, said first folding stabilizer cross member traversing
between said first support leg and said first support rail and pivotally attached
thereto, and said second folding stabilizer cross member traversing between said
second support leg and said second housing support member and pivotally
attached thereto, said first and second folding stabilizer cross members capable
of locking said vertical step assembly and said vertical support assembly in an
extended position;
lateral stability indicating means secured to said top plate; and
longitudinal stability indicating means secured to said top plate;
wherein the length of said support legs and said housing support
members can be adjusted in order to accommodate placing said adjustable
leveling ladder on uneven surfaces, said lateral stability indicating means and
said longitudinal stability indicating means providing indication of when said
adjustable leveling ladder has achieved a position of safe operation.
Joseph's invention relates to an adjustable stepladder and, more particularly,
pertains to allowing users to attain access to areas at varying heights while affording
the user more safe, stable and comfortable footing. As shown in Figures 1-9, the
adjustable stepladder 10 comprises a front leg assembly 12 and a rear leg assembly
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Last modified: November 3, 2007