Patent ID: 8303241

Claim:
A yaw stop arrangement for positioning a kinetic hydropower turbine relative to flowing fluid streams comprising: a mounting assembly including a fixed portion and a rotating portion rotatably mounted on the fixed portion so that the rotating portion can rotate through a defined yaw angle; a turbine connected to the rotating portion; and at least one stop assembly including a yaw stop carrier attached to the fixed portion and a yaw stop member positioned thereon within a rotational path of the rotating portion, the rotary portion including a pylon stop arm and including on opposing sides bumper members so that one side of the yaw stop carrier will be engaged by one of the bumper members on the rotating portion to thereby limit further movement of the rotating portion in one direction of rotation, and the other bumper member will be engaged by an opposite side of the yaw stop member as the rotating portion moves through the defined yaw angle to an opposite rotational direction so as to align the turbine with at least one flow direction of the flowing fluid.