Fluid reaction surfaces (i.e. – impellers) – With control means responsive to non-cyclic condition... – Responsive to condition of torque or thrust of device or...
Patent
1986-08-28
1987-09-15
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
With control means responsive to non-cyclic condition...
Responsive to condition of torque or thrust of device or...
416131, 416202, B63H 300
Patent
active
046936718
ABSTRACT:
A self-adjusting propeller device having a control blade and a thrust blade connected together in nondiametrical relation and pivotally mounted on a hub for rotation about a hub axis. In response to a change in load on the device, the control blade pivots in relation to the hub axis at generally constant pitch, and, by virtue of the manner in which the pitch and thrust blades are interconnected and disposed on the hub, the thrust blade pivots at a changing pitch so that the device applies a substantially constant torque. Structure is provided for chaning the pitch of the control blade independently of the load from a remote location during operation of the device. The selection of control blade pitch positions provides for transmission of forces in either axial direction and at selected magnitudes including a neutral or non-force-transmitting mode.
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Hall Clifton W.
Thornton, Jr. Harold C.
Powell Jr. Everette A.
Tramtec Corporation
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