fig1 - 5 show a sequential operation of exemplary embodiments , and fig6 illustrates alternative embodiments . fig1 illustrates a configuration of a device 100 according to exemplary embodiments of the present application . fig1 illustrates a vertical shaft 10 ( such as a central support shaft ), horizontal supports 20 ( which may be singular or plural support ( s )), and hinges 41 , 42 ( such as articulating / rotating hinges ). fig1 illustrates positions “ a ”, “ b ”, “ c ” and “ d ” to describe rotation of exemplary embodiments . fig1 also illustrates a direction “ w ” in which a fluid may be flowing , such as a direction in which wind is blowing . although the description of exemplary embodiments throughout fig1 - 5 may describe a rotation of elements of the device 100 in a counter - clockwise direction , sequentially from positions “ a ” to “ b ” to “ c ” to “ d ” to “ a ” and so on , please note that embodiments may be modified to include reversed rotation or changed “ pitch ,” in a similar manner as with an aircraft propeller , to spin in a clockwise direction . fig1 illustrates that a planar element 31 , at about the position “ a ”. the planar element 31 may be a flat plane and is illustrated as a calico cat for example . as the wind pushes against a surface ( such as a flat surface ) of the planar element 31 , a force is applied to a back side towards a tail edge 31 b of the planer element 31 in relation to the hinge 41 . increased force caused by torque ( force through a distance ) from the leading edge 31 a of the planar element 31 in relation to the tail edge 31 b causes the planar element 31 to move the horizontal support 20 counter - clockwise , from position “ a ” towards position “ b ”, around the vertical shaft 10 . in this manner , the planar element 31 has rotated to its maximum “ throw ” angle , against the hinge 41 , such that any force applied on the planar element 31 by the wind is transferred to the horizontal support 20 and causes the rotation . further , at the position “ c ” illustrated in fig1 , the wind pushes a surface of the planar element 32 , which may be a flat plane and is illustrated as a tiger cat , away from the wind such that a back side of the planar element 32 is angled in a manner that the wind also pushes the surface to turn the device 100 counter - clockwise . fig2 illustrates exemplary embodiments in which elements of the device 100 have rotated from the positions illustrated in fig1 . in fig2 , the planar element 31 has moved counter - clockwise to a position in between positions “ a ” and “ b ,” and the planar element 32 has moved counter - clockwise to a position in between positions “ c ” and “ d ”. in fig2 , the planar element 31 is still receiving force from the wind in the direction w and is pushed further counter - clockwise around the vertical shaft 10 . the force of the wind in direction w has caused the planar element 32 to swivel on its hinge 42 to face and “ vane ” into the direction w of the wind . the vaning forces on the planar element 32 are much less than the forces on the planar element 31 in the exemplary embodiments of fig2 . the unequal torque forces on the horizontal support 20 between the planar element 31 and the planar element 32 causes the planar element 31 to turn counter - clockwise , without further rotating about the hinge 41 , while the planar element 32 vanes with less opposing force into the wind and continue to move forward into the wind about the hinge 42 . fig3 illustrates exemplary embodiments in which elements of the device 100 have rotated from the positions illustrated in fig2 . in fig3 , the planar element 32 has moved counter - clockwise to a position in between positions “ d ” and “ a ”, and the planar element 31 has moved counter - clockwise to a position in between positions “ b ” and “ c ”. because the wind has forced the back of the planar element 31 though the swiveling hinge 41 away from the wind , the planar element 31 continues to develop torque and is moved counter - clockwise . the planar element 32 has swiveled on its hinge 42 by the wind &# 39 ; s force to offer less opposing force than the forces on the planar element 31 such that the motion of the elements of the device 100 continues counter - clockwise . fig4 illustrates exemplary embodiments in which elements of the device 100 have rotated from the positions illustrated in fig3 . as the elements of the device 100 continue to travel counter - clockwise from the illustrations in fig3 , fig4 illustrates that the planar element 32 is in a position between the positions “ a ” and “ b ,” and the planar element 31 is in a position between the positions “ c ” and “ d ”. in a similar fashion as in fig1 , the planar element 32 receives more force through the wind than the now “ vaning ” planar element 31 as the elements of the device continue to turn counter - clockwise . the hinge 42 on the planar element 32 has swiveled to its maximum “ throw ” position and results in a large rear surface area towards the tail edge 32 b in which the torque from the wind pushes the horizontal support 20 while the hinge 41 on the planar element 31 swivels so the flat planar element 31 naturally vanes into the wind and receives less opposing force , thereby allowing the elements of the device 100 to continue to turn counter - clockwise . fig5 illustrates exemplary embodiments in which elements of the device 100 have rotated from the positions illustrated in fig4 . as the elements of the device 100 continue to turn counter - clockwise from the positions illustrated in fig4 , fig5 illustrates that the planar element 32 has rotated to a position between positions “ b ” and “ c ” and the planar element 31 has rotated to a position between the positions “ d ” and “ a .” as the planar element 32 continues to turn around the vertical shaft 10 from the position in fig4 to that in fig5 , the wind forces the planar element 32 to swivel on its 42 from one side of the hinge stop to the other . this change in angle of the planar element 32 in relation to the opposing arm applies more force to the side of the planar element 32 opposed to the wind , and the planar element 32 continues to be pushed on by the wind and moves the device 100 in a counter - clockwise rotation about the vertical shaft 10 . as rotation continues from the positions illustrated in fig5 , the elements of the device 100 cyclically return to the positions illustrated in fig1 , and according to exemplary embodiments , the elements of the device 100 will continue to rotate as the wind forces continue . according to exemplary embodiments , the hinge 41 is connected to the planar element 31 at a position unevenly offset from a center along a longitudinal direction of the planar element 31 in a direction from the tail edge 31 b towards the leading edge 31 a . similarly , the hinge 42 is connected to the planar element 32 at a position unevenly offset from a center along a longitudinal direction of the planar element 32 in a direction from the tail edge 32 b towards the leading edge 32 a . the offset of the hinges 41 and 42 is anywhere from respective leading edges 31 a and 32 a of the planar elements 31 and 32 to about 30 % to the planar elements &# 39 ; 31 and 32 horizontal centers . the “ correct ” “ throw ” of the hinge is preferably anywhere below plus and minus about 80 degrees with plus and minus 30 degrees being the setting for the preferred embodiment , with 0 degrees corresponding to a position at which ones of the planar elements 31 and 32 are perpendicular to the horizontal support 20 . as the angles of the flat surfaces of the planar elements 31 and 32 change with the constant direction w of the wind , the net forces around the rotational plan result in rotational motion of elements of the device 100 due to the torque applied by the wind . according to exemplary embodiments , the device 100 can include multiple horizontal supports , with opposing planar elements , which can rotate in opposite directions by shifting the offset of the planar elements on one support in a direction opposite to the offset in the other support . exemplary embodiments are discussed below with respect to fig6 . fig6 illustrates exemplary embodiments in which elements 31 and 32 of a device 200 have rotated from the positions illustrated in fig1 to those in fig2 , and fig6 also illustrates embodiments in which , in addition to the horizontal support 20 and its planar elements 31 and 32 , another horizontal support 20 b , having planar elements 51 and 52 attached thereto by articulating hinges 61 and 62 , is included in the device 200 . the arrangement of hinges 61 , 62 , planar elements 51 , 52 and the horizontal support 20 b mirrors the arrangement of hinges 41 , 42 , planar elements 31 , 32 and the horizontal support 20 , such that the wind w also exerts forces on the planar elements 51 and 52 to rotate the horizontal support 20 b clockwise , from a to d to c to b to a in this example , and opposite to the counter - clockwise rotation of horizontal support 20 , as similarly discussed above with respect to fig1 - 5 . the horizontal supports 20 and 20 b may be attached at respectively different heights along the vertical shaft 10 such that interference is not caused by opposite rotations of the horizontal supports 20 and 20 b and their planar elements 31 , 32 , 51 and 52 . further , while this specification contains many features , the features should not all be construed as limitations on the scope of the disclosure or the appended claims . certain features described in the context of separate embodiments can also be implemented in combination . conversely , various features described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable sub - combination . although the drawings describe operations in a specific order and / or show specific arrangements of components , one should not interpret that such specific order and / or arrangements are limited , or that all the operations performed and the components disclosed are needed to obtain a desired result . accordingly , other implementations are within the scope of the following claims .
there is described a wind powered device including a vertical support , a horizontal support rotatably attached to the vertical support , and planar elements respectively attached to opposite ends of the horizontal support by articulating hinge elements . the articulating hinge elements are connected to ones of the planar elements at respective positions that are horizontally offset from the center of each planar element , and each hinge element can rotate through a predetermined maximum throw angle .