Deicer control system
AssigneeThe B. F. Goodrich Company
InventorRonald W. Phillips, II
Life of this patent
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Abstract
A deicer control circuit wherein a pressurized air source is connected to control valves and a regulating valve. Such regulating valve has a vacuum line output line that is also connected to such control valves. The control valves, on actuation by a timer, will sequence the pressure line and the vacuum line to alternately inflate and deflate the deicer units. The control valves also provide a sealing off or locking in of the pressurized deicer units in this sequence in response to a pressure sensor.
Claims6
A system for controlling inflatable units for deicers comprising inflatable units that are operative upon flexing to break ice accumulated thereon
- a suction regulating valve, a suction line connected to said regulating valve,
- a pressure source connected to said regulating valve for creating a suction in said suction line,
- valve means operative for interconnecting said suction line and said pressure source to said inflatable units for controlling the condition of said inflatable units, said valve means operative in a first mode for maintaining a vacuum on said inflatable units, said valve means operative in a second mode for maintaining a continuous flow of pressurized air to said inflatable units, and said valve means operative in a third mode for locking said inflatable units in a distended condition without the further flow of pressurized air thereto.
A system for the controlling of the inflation and deflation of inflatable units comprising inflatable units, a regulating valve,
- a suction line interconnecting said regulating valves to a first solenoid operated valve,
- a pressure source connected to said regulating valve for creating a vacuum in said suction line, said pressure source having a branch line connected to said first solenoid operated valve,
- a second solenoid operated valve interconnecting said first solenoid valve to said inflatable units, said solenoid valves being biased in the normal de-energized condition to maintain a direct connection between said suction line and said inflatable units,
- said first solenoid operated valve is operative in an energized condition to interconnect said branch line with said second valve to pressurize said inflatable units,
- and wherein a pressure sensor is operative in response to a preset pressure in said inflatable units to lock said inflatable units at said preset pressure.
Dependencies are inferred from the claim text.