Heating systems – Air – Furnace
Patent
1992-06-25
1994-04-12
Bennett, Henry A.
Heating systems
Air
Furnace
1231798, 454337, 126113, 222 71, 222646, F24D 500
Patent
active
053018737
ABSTRACT:
A low fluid indicator for a fluid injection system of the type having a sealed pressurized canister, and a valve responsive to a control signal to release fluid from the canister includes a counter that maintains a count. A pulse generating circuit increments the count by a first increment and a second increment in response to the control signal. The first increment is insensitive to the duration of the control signal above a threshold duration and is selected in accordance with a fill volume of the injection system. The second increment varies with duration of the control signal above the threshold duration and has a count rate selected in accordance with an injection flow rate of the injection system. A low fluid indicator lamp is responsive to the counter to indicator a low fluid condition when in the canister when the count exceeds a selected value.
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Zerostart "Smartshot" Starting Fluid Control System.
Burke James O.
Solberg Dean R.
Bennett Henry A.
Kold Ban International
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