The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 1981
Filed:
Feb. 26, 1979
Karl H Bergey, Jr, Norman, OK (US);
Michael L Bergey, Norman, OK (US);
Other;
Abstract
This invention relates generally to an improved windmill design that combines the blade and rotor support system with the electrical generating system in such a way as to simplify the windmill construction. Specifically, it eliminates the need for shafts, gears, and other coupling devices between the turbine blade system and the electrical generating system. In addition, the windmill design also includes a means for varying the pitch of the turbine blades automatically so as to provide near-optimum blade angles under varying wind conditions, and a tendency toward self-governing at high wind speeds. Furthermore, the blades are attached rigidly to the hub without the need for bearings or other mechanical couplings. Blade pitch changes are produced by twisting the blades elastically by forces produced by fixed weights. The effect of these features individually and in combination is to reduce the complexity of the wind turbine, the generating system, and their associated parts.