Control system for a hydraulic coupler
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United States of America Patent
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Oct 21, 2014
Grant Date -
Apr 21, 2011
app pub date -
Oct 15, 2010
filing date -
Oct 16, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A control system for extending and retracting a ram of a hydraulic coupler for coupling an attachment to an arm of an excavator or back hoe, said control system being adapted to provide an audible and/or visual alert to an operator to indicate a leak of fluid or loss of fluid pressure from said ram and/or from a hydraulic circuit supplying said fluid to the ram. Preferably the control system further comprises a flow sensor for sensing the flow of fluid in a feed line for supplying pressurized fluid to the ram and/or a pressure sensor for sensing the pressure of fluid in said feed line, said control system including at least one indication device for providing said audible and/or visual alert to an operator to indicate a leak of fluid or loss of fluid pressure in response to, or as a function of, the output of the flow sensor and/or the pressure sensor.
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