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US 2019/0166757 A1Published application
Piezo actuated nozzel control valve
AssigneeDeere & Company
InventorsDavid S. Mercer, Richard A. Humpal
Life of this patent
Estimating the term…
Abstract
A mobile agricultural application machine includes a controllable valve and nozzle through which a substance is applied to an agricultural field. The controllable valve is a piezo-actuated valve. An application control system generates valve control signals to control a piezo actuator on the piezo-actuated valve.
Claims20
A mobile agricultural application machine, comprising:
- a vehicle propulsion system;
- a source of a substance to be applied to an agricultural field;
- a spray nozzle;
- a control signal generator that generates a valve control signal;
- and
- a piezo-actuated valve that receives the valve control signal and moves based on the valve control signal to apply the substance to be applied to the agricultural field through the spray nozzle.
3 more elements
An agricultural spray nozzle assembly, comprising:
- a spray nozzle;
- and
- a piezo-actuated valve that receives a valve control signal and moves based on the valve control signal to control movement of a substance to be applied to an agricultural field through the spray nozzle.
A method of controlling a mobile agricultural machine to apply a substance to an agricultural field, the method comprising:
- generating a valve control signal to control an agricultural spray valve on the mobile agricultural machine;
- and
- applying the valve control signal to a piezo actuator in the agricultural spray valve to control the agricultural spray valve.
Dependencies are inferred from the claim text.