Fluid reaction surfaces (i.e. – impellers) – With control means responsive to non-cyclic condition... – Impeller rotation speed responsive
Patent
1978-07-31
1981-06-23
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
With control means responsive to non-cyclic condition...
Impeller rotation speed responsive
416135, 416 41, F03D 704
Patent
active
042748070
ABSTRACT:
A speed control system for a windmill having blades which can be feathered for altering speed and with the blades under the control of a mechanism which includes a piston assembly and a fluid governor associated therewith. Spring means are used to feather the blades against the force of the piston assembly which is interconnected with the blades, and the speed of blade rotation actually creates the fluid pressure acting on the piston assembly and a governor is associated with the piston assembly for controlling the position of the piston and thus controlling the feathering of the blades, all according to the speed of rotation of the windmill blades. The windmill can be used for generating electric power, and fail-safe mechanisms are employed for protecting in the event of a windmill blade breakage.
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patent: 4029434 (1977-06-01), Kenney
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Hansmann Arthur J.
Powell Jr. Everette A.
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