Patent attributes
A support apparatus of adjustable height having at least one leg assembly with a first leg unit, a second leg unit and a third leg unit. The first and second leg units are slidably movable relative to each other, and the second and third leg units are slidably movable relative to each other. A first fixing clamp selectively locks and unlocks the first leg unit relative to the second leg unit, and a second fixing clamp selectively locks and unlocks the first leg unit relative to the second leg unit. First and second actuating levers are independently actuatable to selectively lock and unlock the first and second fixing levers. The first and second actuating clamps can be operated simultaneously to simultaneously lock or unlock both of the first and second fixing clamps, irrespective of the positions of the first, second and third leg units relative to each other.
