Solar patents

Pivot bases
A solar module must pivot in the horizontal plane and vertical plane. Best way to to this is a slotted circle driven by worm gear, supported on caster wheels and four bearings. The idea is generic and not patentable.

http://www.google.com/patents?id=WwLpAQAAEBAJ&pg=PA26&dq=solar+mechanical+pivot&hl=en&ei=f9VoTpjkMse68gP0hLHSCw&sa=X&oi=book_result&ct=result&resnum=6&ved=0CEAQ6AEwBTgo#v=onepage&q=solar%20mechanical%20pivot&f=false