Patent ID: 7647872

Claim:
A height adjustable apparatus for supporting a work piece, attachable to a machines having an adjustable height work surface comprising: (a) an extension table having a proximal end and a spaced-apart distal end, wherein the proximal end is pivotally attached to the adjustable-height work surface; (b) a leveling assembly having an inner section proximal to said machine base and having a pair of leveling rails pivotally connected to said machine base and an outer section distal to said machine base having a pair of support rails extending laterally beneath the table and pivotally connected to the leveling rails of the inner section; (c) a leg assembly including an upper end pivotally connected to and supporting the distal end of the extension table and a lower end pivotally connected to the outer section of said leveling assembly; (d) a pair of lifting arms having a first end pivotally attached to said adjustable-height work surface near the extension table and a second end pivotally connected to the inner section of said leveling assembly; and wherein the leveling assembly supports and maintains the height of the extension table in substantial planar alignment with the adjustable height work surface of the machine.