Patent ID: 7909074

Claim:
A workbench, comprising: a work table; a wheel device secured to a bottom of said work table for allowing said work table to be moved everywhere with said wheel device; four floor engaging extremities attached to the bottom of said work table; four rotary members rotatably attached to the bottom of said work table and engaged with said floor engaging extremities respectively for adjusting said work table up and down relative to said floor engaging extremities; means for coupling said rotary members together and for rotating said rotary members simultaneously and for adjusting said work table up and down relative to said floor engaging extremities simultaneously, wherein said coupling means includes a coupling member engaged with said rotary members for rotating said rotary members simultaneously and for adjusting said work table up and down relative to said floor engaging extremities simultaneously; and a base support disposed below said work table and for supporting said work table, wherein said rotary members are rotatably attached to said base support and said floor engaging extremities and said wheel device are attached to said base support, wherein said wheel device includes a plate secured to said base support, a bracket rotatably attached to said plate with a pivot pin, and a wheel member rotatably attached to said bracket.