Patent ID: 7533526
Filing Date: 2009-05-19
Classification: F01D,F02C,F02K,F05D,F16D,Y10T

Abstract:
1. A drive arrangement comprising a rotatable member for receiving a fluid, and having mounted thereon a plurality of drive members movable between a drive position, in which the drive members can drive, or be driven by, the fluid, and a non-drive position, in which the drive members are substantially prevented from driving, or being driven by, a fluid received in the rotatable member wherein the drive members are each pivotally mounted on the rotatable member at respective pivots, and each drive member is pivotally movable between the drive and non-drive positions wherein the centre of rotation of each drive member is spaced from the centre of gravity of the respective drive member and wherein the centre of rotation is arranged relative to the centre of gravity of the respective drive member to allow the drive member to move to the non-drive position under-centrifugal force, whereby when there is substantially none of the aforesaid fluid present, the drive member can move under centrifugal force to the non-drive position.