Controller for a paving screed heating system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jan 1, 2002
Grant Date -
N/A
app pub date -
Feb 11, 2000
filing date -
Feb 11, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A controller is for a heating system of a paving screed including a screed plate. The heating system is connected with the screed and configured to transfer thermal energy to the screed plate and includes an actuator configured to adjust thermal energy output of the heating system. The controller includes a temperature sensor connectable with the screed and configured to sense temperature of the screed plate. The sensor is also configured to generate electrical signals proportional to sensed temperature. An electrical logic circuit is electrically connected with the sensor and is electrically connectable with the actuator. The logic circuit is configured to compare a temperature signal from the sensor with a desired temperature value and to automatically operate the actuator such that the actuator adjusts thermal energy output of the heating system so as to maintain screed temperature about the desired temperature value. The logic circuit is a microprocessor and the temperature sensor is preferably a thermocouple. The microprocessor has a stored software program that selectively configures the heating system for use with various types of screed heaters.
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