Windmill blade stalling and speed control device

Details Windmill blade stalling and speed control device Windmill blade stalling and speed control device

1980-04-25

1982-10-05

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Resilient bias or mount

416206, F03D 702, F03D 704

Patent

active

043526330

ABSTRACT:
The windmill stalling and speed control device is mounted in the blade supporting hub of a windmill and is operative in response to blade rotation induced by a blade pitch control unit. The device includes a biasing assembly mounted to oppose blade rotation in at least one direction and a stage adjustment unit which operates to aid the biasing unit and increase the opposition to blade rotation when the windmill hub and blades reach and remain within predetermined speed ranges.

REFERENCES:
patent: 2052454 (1936-08-01), Ellwood et al.
patent: 2118201 (1938-05-01), Hood
patent: 2282077 (1942-05-01), Moore
patent: 2319592 (1943-05-01), Fiedler
patent: 2391778 (1945-12-01), Gregor
patent: 2685932 (1954-08-01), Hartel
patent: 4202655 (1980-05-01), Maloof
patent: 4257736 (1981-03-01), Jacobs
patent: 4257740 (1981-03-01), Duez

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