Sailing windmill, fully responsive vawt
OwnerZhong Ai XIAinventor
Life of this patent
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Abstract
The present invention relates to a vertical axis windmill. The windmill rotates on an upright post, with plural arms holding articulated working members circling around. Each working member has a pivotal edge like a vane, a flag or a hinged door, swings on its own axis and also circles around the axis of the central post. On the axis of each working member furnished a special hinge bearing to control and restrain the movement of each, flipping and engaging the favorable wind in about ¾ turn of the central axis but disengaging in the rest ¼ turn. The said hinge bearing also provides elastic releasable means, along with a centrifugal governor, to deal with excessive wind, allowing the working member to disengage to a temporary idle position as a free weather vane.
Claims4
(canceled)
A windmill comprising:
- a central shaft being rotatable about its longitudinal axis;
- a rotor structure 01 mounting on the central shaft with upper and lower arms to hold plural rotatable working members equal spaced on the bolt circle of far end of the said rotor arms;
- each working member comprising:
- working part 04 or a piece of sail cloth along with a pair of forearms 03 mounted on elbow shaft or satellite shaft 02 which is parallel to the central axis with bearings on both ends including
- at least one special hinge bearing 05 to control whether swinging or pivoting of each working member, including
- an inner race which is a radial cam with a portion of concaved surface being mounted on the elbow shaft 02 and
- an outer race being mounted on the far end of rotor arm 01, with a slotted tail containing
- a releasable follower backed with
- a spring, elastically coupling into the concave of the said inner race;
- the said special hinge bearing 05 being configured normally to allow the working-part 04 to skew to center-to-bolt radius line of the arm 01 about 30° then swing out 90°;
- and a centrifugal governor 06 to work with the said special hinge bearing 05 for disengaging excess wind, including a proper weight, a lever with support and connection to the follower of said special hinge bearing 05.
Dependencies are inferred from the claim text.