SCREED CUSHIONING SYSTEM AND METHOD
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United States of America Patent
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Issued Date -
Mar 16, 2017
app pub date -
Sep 10, 2015
filing date -
Sep 10, 2015
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A paver including a screed and a hydraulic actuator coupled to the screed. The hydraulic actuator is configured to raise the screed to a transport position by pressurizing a raise end of the hydraulic actuator. An accumulator is selectively connected to the hydraulic actuator. A control valve configured to switch the screed in the transport position between a non-cushioned state and a cushioned state by connecting the accumulator to the raise end of the hydraulic actuator in the cushioned state. The hydraulic pressure of the accumulator is equalized to a hydraulic pressure of the hydraulic actuator before the control valve switches the screed from the non-cushioned state to the cushioned state.
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