Locomotive cab heating system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 29, 2000
Grant Date -
N/A
app pub date -
Apr 15, 1998
filing date -
Apr 17, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A locomotive cab heating system having a plurality of separately actuated heating units housed in a supply air duct and connected to a microcontroller. Preferably, the system includes a high temperature shutdown thermostat. The microcontroller is equipped with memory storing a program that is configured to control the microcontroller to turn on and off a predetermined number of the heating units responsive to temperature readings received from the temperature sensor, thereby maintaining air temperature in the duct within a selected range, regardless of fan speed and air flow rate. By controlling the number of heating units in operation at any given time, the heating system of the present invention controls the heat delivered to a locomotive cab more effectively, thereby ensuring the comfort of the occupants of the cab. The locomotive cab heating system of the present invention is designed to be easily and inexpensively retrofitted to preexisting heating systems.
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