Hydraulic cylinder control system for garbage collection truck lift-dump handler
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United States of America Patent
Stats
-
Jan 22, 1991
Grant Date -
N/A
app pub date -
Dec 21, 1988
filing date -
Dec 22, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An article handling apparatus is disclosed which comprises two independently controllable fluid actuated drives. The first fluid actuated drive comprises a cylinder and a differential piston which defines a large chamber and a smaller chamber. Also, a control system is provided which maintains a differential pressure between the large and small chambers in each of several operating positions. The second fluid actuated drive is mounted to the movable member of the first drive, and the second drive is controlled by fluid lines leading respectively to the large and small chambers of the first drive.
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