Power plants – Pressure fluid source and motor – Coaxial impeller and turbine unit
Patent
1996-03-07
1997-12-09
Lopez, F. Daniel
Power plants
Pressure fluid source and motor
Coaxial impeller and turbine unit
60494, 415 73, 416177, F16D 3302
Patent
active
056947712
ABSTRACT:
The variable speed drive mechanism includes an input member (17) and an output member (18), each rotatable within a housing (11) filled with fluid. The input and output members each have helical vanes (26) that are in a close running fit with sleeves (21, 22) within the housing. The amount of axial overlap of the sleeves with the helical vanes of either the input member or the output member is adjustable. Rotation of the input member causes the helical vanes of the input member to pump the fluid towards the helical valves of the output member, causing the output member to rotate. The ratio of the speed of the output member with respect to the input member is varied, by varying the axial length of overlap.
REFERENCES:
patent: 2389174 (1945-11-01), Whitworth
patent: 4150542 (1979-04-01), Spears
patent: 4672810 (1987-06-01), Marlowe
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