Dual gerotor pump for use with automatic transmission
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 14, 2002
Grant Date -
N/A
app pub date -
Jan 20, 2000
filing date -
Jan 20, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A dual gerotor pump is used for an automatic transmission. A dual gerotor pump which is driven by a central drive mechanism has a first chamber which continuously provides transmission fluid to the automatic transmission. The pump also has a second pumping chamber which selectively directs fluid to the automatic transmission when necessary. A valve mechanism is provided to divert fluid from the second pumping chamber back to the second pumping chamber so that it can recirculate thereby decreasing fluid pressure to the automatic transmission when it is not required.
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