Patent ID: 7318504

Claim:
An adjusting mechanism, comprising: a first integral support structure having a series of operatively connected openings with a first piston chamber on a first end and a second piston chamber on a second end; a first piston operatively emplaced within said first piston chamber; a second piston operatively emplaced within said second piston chamber; a flow medium located within said series of operatively connected openings; a valve comprising a valve shaft, a port and at least one seal around said valve shaft, wherein said valve is operatively emplaced within said first integral support structure, wherein said valve is configured to have a first position that provides a clear path between said first piston chamber and said second piston chamber, wherein said valve is configured to have a second position that prevents a clear path between said first piston chamber and said second piston chamber, and a second integral support structure comprising means for connecting to and mechanically communicating with said first integral support structure, wherein when said valve is in said first position, said first piston and said second piston will alternately extend and retract allowing said first integral support to rotate with respect to said second integral support, wherein when said valve is in said second position, said first piston and said second piston will be locked in place and said first integral support will not rotate, but will be locked with respect to said second integral support, wherein said series of operatively connected openings further comprises: a first port connected by a first passage to said first piston chamber; a first through-hole configured for emplacement of said valve, wherein said first through-hole is connected by a second passage to said first port; a second port connected by a third passage to said first through-hole; and a fourth passage connected between said second piston chamber and said second port.