Tip brake mechanism for a wind generator blade

Details Tip brake mechanism for a wind generator blade Tip brake mechanism for a wind generator blade

1989-09-21

1990-08-28

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Actuation directly responsive to magnetic or electrical effect

416 33, F03D 704, F03D 706

Patent

active

049521195

ABSTRACT:
A tip brake is described for use on the blade of a wind generator so that the tip will be rotated relative to the remainder of the blade to slow the rotation of the rotor. The tip of the blade is rotatable, about its longitudinal axis, with respect to the remainder of the blade. A brake mechanism interconnects the blade tip with the remainder of the blade to cause the blade tip to be rotated when the blade is subjected to a predetermined amount of centrifugal force. Once the blade tip has been deployed to slow rotation of the rotor, it will remain deployed until the wind becomes very low or the rotor is manually slowed so that the spring can cause the tip to be reset.

REFERENCES:
patent: 2074149 (1937-03-01), Jacobs
patent: 2391778 (1945-12-01), Gregor
patent: 2677539 (1954-05-01), Winslow
patent: 3891247 (1975-06-01), Jacobs et al.
patent: 4355955 (1982-10-01), Kisovec
patent: 4374631 (1983-02-01), Barnes
patent: 4495423 (1985-01-01), Rogers
patent: 4575309 (1986-03-01), Brown
patent: 4653982 (1987-03-01), Kojima et al.
patent: 4715782 (1987-12-01), Shimmel

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