Hydraulic lift rotary rake
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United States of America Patent
Stats
-
Jan 3, 1995
Grant Date -
N/A
app pub date -
Sep 3, 1993
filing date -
Sep 3, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotary rake is provided with a hydraulic lifting mechanism for raising and lowering the rake. A vertical shaft extending through the center of a rotary gearbox on the rake serves as a hydraulic fluid port. Pressurized hydraulic fluid from a remote source passes through the shaft to a hydraulic cylinder mounted on a support frame. The hydraulic cylinder operates a mechanical linkage which raises and lowers the rake. The mechanical linkage includes an over-center position for securely holding the rake in the raised position.
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