Pump drive apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 4, 2003
Grant Date -
Mar 14, 2002
app pub date -
May 21, 2001
filing date -
May 23, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Between a water pump 3 and an electric motor 1, there is interposed a toroidal-type continuously variable transmission 2. By changing the gear change ratio of the toroidal-type continuously variable transmission 2, the water supply quantity can be changed while the electric motor 1 is being operated at a constant speed.
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