ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,478,811, issued on Nov. 25.
"Thermistor for windshield sprayer circuit" was invented by Clifford B. Breed (Fort Worth, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A Thermistor for Windshield Sprayer Circuit is a modification to a motor vehicle spray circuit that prevents utilization of the circuit in freezing temperatures. The device utilizes a thermistor that is connected between the main positive voltage, typically +12 VDC in a motor vehicle, and bias resistors that drive a transistor. When temperatures are high enough, envisioned to be above forty degrees Fahrenheit (40deg F.), the thermistor presents an open circuit that does not interfere ...