Patent ID: 7594475

Claim:
An adjustable desk comprising a desk board and a pair of supporting legs separately extending from both sides of said desk board; each of said supporting legs further including: an upper frame fastened to said desk board, wherein, said upper frame having a first slot defined thereon and a first positioning zone formed between said first slot and a circumference of said upper frame, so that a plurality of first positioning apertures being equidistantly spaced on said first positioning zone; a lower frame pivotally mounted on said upper frame, wherein, said lower frame having a second slot defined thereon and a second positioning zone formed between said second slot and a circumference of said lower frame, so that a plurality of second positioning apertures equidistantly spaced on said second positioning zone; said first slot and said second slot intersecting with each other and forming two intersections while overlapping said upper frame and said lower frame; said first positioning apertures being communicated with said second positioning apertures for allowing positioning stems to penetrate therethrough; a plurality of fasteners connecting said upper frame and said lower frame, wherein, said fasteners being able to insert between said two intersections and slidably move within said first slot and said second slot, thereby adjusting said desk board at a certain height and slope levels; and an adjustable apparatus disposed thereon said supporting legs, wherein said adjustable apparatus provides with an adjustable stem secured to said upper frame and an adjustable member pivoted on said lower frame, and said adjustable stem is driven and positioned by said adjustable member.