IP Library Patent Application 13057767
Patent Application
App. No. 13/057,767

VERTICAL AXIS TURBINE HYBRID BLADES

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Quick Facts
Patent No.
US None
App. No.
13/057,767
Abstract

Blade designs for combining elements of drag and lift for vertical axis turbines are presented. Doing so may combine the best features of both types of turbine.

Claims (22)

1 - 21 . (canceled)

22 . A blade, defined as including a blade segment, of a vertical axis turbine, comprising:

a. At least two regions of different shapes in a vertical distribution along the blade.

23 . The blade of claim 22 , further comprising:

b. A foil shape functionally adjacent, defined as in a position to increase the fluid velocity entering the blade, to the blade.

24 . The blade of claim 22 , wherein one region is a predominantly drag shape, and one region is a predominantly lift shape.

25 . The blade of claim 22 , wherein at least one region is a mixed drag and lift shape.

26 . The blade of claim 22 , wherein the turbine is in a liquid.

27 . The blade of claim 22 , wherein the different shape is one of different dimension of the same shape.

28 . The blade of claim 22 , further comprising:

b. At least a third vertically distinct region of lift or drag.

29 . The blade of claim 22 , wherein one of the regions is a partial foil shape.

30 . The blade of claim 29 , wherein the line from the external edge to the endpoint of the partial foil is in the direction of the internal curve of the blade on one side.

31 . The blade of claim 30 , wherein the line from the external edge on the second side to the endpoint of the partial foil is in the direction of the internal curve of the blade.

32 . The blade of claim 22 , wherein one of the regions is a full foil.

33 . A blade, defined as including a blade segment, of a vertical axis turbine, comprising:

a. A. shape that bulges peripherally and/or centrally in a vertical distribution.

34 . The blade of claim 33 , further comprising:

b. A foil shape (not the blade) functionally adjacent to the blade.

35 . An arm holding a vertical axis turbine blade, comprising:

a. A streamlined arm facing the direction of movement of the turbine with a collector shape on the opposite side.

36 . The arm of claim 35 , wherein the streamlined arm comes to a point in front.

Assignments (2)
RELEASE OF SECURITY INTEREST Recorded Jun 17, 2014
From: DR. MARK FRIEDMAN LTD.
To: FARB, DANIEL
Reel/Frame 033188/0807 →
SECURITY AGREEMENT Recorded Dec 10, 2012
From: FARB, DANIEL
To: DR. MARK FRIEDMAN LTD.
Reel/Frame 029432/0994 →