US3565052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal controlled water spray humidifier
Assignee: Field Controls LLC
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Filing: 1968-10-15
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Granted: 1971-02-23
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Expires: 1988-10-15
Abstract
Abstract A water spray humidifier for use in furnace heating systems, is disclosed. Water is sprayed into the heating system in response to temperature changes in the distribution chambers of the heating system. The humidifier is very simple and requires few parts because it is not connected to the fuel supply or electrical system of the furnace.
Inventors
- 👤 Keith L Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:30
CPC Classifications
G; G05; G05D; G05D22/00; G05D22/02; F; F24; F24F; F24F11/00; F24F11/70; F24F11/88; F24F6/00; F24F6/12; F24F11/30; F24F2110/00; F24F2110/10; F24F6/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
155 words
A humidifier for a warm air furnace having a plenum chamber and furnace controls comprising: a temperature responsive means comprising a bimetallic thermostat switch mounted within the plenum chamber and not in the firebox of said furnace; means for spraying moisture into said plenum chamber comprising a spray nozzle; a valve connected to said spray nozzle; a solenoid for controlling said valve; a humidistat connected in series with the solenoid and the biMetallic switch so that the spraying means is controlled and responsive to the temperature in the plenum chamber rather than the firebox and the moisture in the air heated by said furnace; and a power circuit which is completely independent of the furnace controls connected to said bimetallic switch and to said solenoid and to said humidistat such that the means for spraying moisture into the plenum chamber is turned on when the temperature in the plenum chamber is above a preset level.
Claim 2
Dependent Claim
155 words
A humidifier for a warm air furnace having a plenum chamber and furnace controls comprising: a temperature responsive means comprising a bimetallic thermostat switch mounted within the plenum chamber and not in the firebox of said furnace; means for spraying moisture into said plenum chamber comprising a spray nozzle; a valve connected to said spray nozzle; a solenoid for controlling said valve; a humidistat connected in series with the solenoid and the biMetallic switch so that the spraying means is controlled and responsive to the temperature in the plenum chamber rather than the firebox and the moisture in the air heated by said furnace; and a power circuit which is completely independent of the furnace controls connected to said bimetallic switch and to said solenoid and to said humidistat such that the means for spraying moisture into the plenum chamber is turned on when the temperature in the plenum chamber is above a preset level.
Claim 3
Dependent Claim
129 words
A humidifier for a warm air furnace having a plenum chamber and furnace controls comprising: a temperature responsive means mounted in said plenum chamber of said furnace and not in the firebox and comprising a thermistor; a gating circuit including a transitor; biasing means which are independent of the furnace controls for said transistor and said thermistor forming a portion of said biasing means; means for spraying moisture into said plenum chamber comprising a spray nozzle; a valve connected to said spray nozzle and a solenoid for controlling said valve; and a power circuit completely independent of said furnace controls connected in circuit with said solenoid and transistor such that the moisture spraying means is turned on when the temperature in the plenum chamber is above a preset level.
Claim 4
Dependent Claim
129 words
A humidifier for a warm air furnace having a plenum chamber and furnace controls comprising: a temperature responsive means mounted in said plenum chamber of said furnace and not in the firebox and comprising a thermistor; a gating circuit including a transitor; biasing means which are independent of the furnace controls for said transistor and said thermistor forming a portion of said biasing means; means for spraying moisture into said plenum chamber comprising a spray nozzle; a valve connected to said spray nozzle and a solenoid for controlling said valve; and a power circuit completely independent of said furnace controls connected in circuit with said solenoid and transistor such that the moisture spraying means is turned on when the temperature in the plenum chamber is above a preset level.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |