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Two-axis tracker for solar panels and the like

United States Patent

April 16, 2013
View the Complete Patent at the US Patent & Trademark Office
A tracker including an outer post having elongated bore and a lower end mounted on a sub-structure, an inner pole rotatably received in the elongated bore, a lower bearing in the bore adjacent a lower end of the outer post and attached thereto to be constrained from lateral movement and mounted on the sub-structure such that a lower end of the inner pole rests on and is supported by the lower bearing, an upper bearing near an upper end of the outer post, a circumferential drive supported on the outer post for rotating the inner pole relative to the outer post, such that substantially a full weight of a load on the inner pole is directly transmitted to the sub-structure and lateral force and torque leverage are placed on a full length of the outer post by way of the upper and lower bearing.
Liao; Henry H. (Los Alamitos, CA)
The Boeing Company (Chicago, IL)
12/ 488,098
June 19, 2009
STATEMENT This invention was made with Government support under DE-FC36-07G017052 awarded by the Department of Energy. The government of the United States of America has certain rights in this invention.