US3723707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidifier
Assignee: Turmix AG
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Filing: 1971-08-20
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Granted: 1973-03-27
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Expires: 1991-08-20
Abstract
Abstract A humidifier having automatic control means respective to the degree of moisture in the air of the space to be humidified is provided with a hygrostatic switch located directly on the humidifier, thus dispensing with wiring connections between the humidifier and a hygrostatic switch located at a distance therefrom. A current of air from the space to be humidified is drawn past the hygrostatic switch as a convection current caused by disposing the air inlet, into an outer casing surrounding a cold water container and a heated water container, at a point adjacent the cold water container and disposing the air outlet at a point distant from the air inlet and adjacent the heated water container.
Inventors
- 👤 M Wunderlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:35
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/025; Y; Y10; Y10S; Y10S261/00; Y10S261/34; Y10S261/65
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
182 words
A humidifier comprising a container having two communicating chambers, a heating device mounted in one chamber for vaporizing water supplied to said chamber from the second chamber disposed side by side to said one chamber and including cold water, a housing surrounding the container so as to form an air channel between the housing and the container extending across opposite side walls and the bottom wall of the container, the housing having an air inlet opening adjacent to the cold water chamber and an air outlet opening therein adjacent said chamber for vaporizing water, said inlet opening and outlet opening being connected by said air channel, the ends to the air channel being of different temperature and due to convection causing a flow of air from the exterior into the channel and through the channel, and a hygrostatic switch mounted in the air channel adjacent said air inlet opening and acted upon by the flow of air from the exterior, so as to control the heating device upon the humidity of the surrounding air decreasing below or increasing above a predetermined value.
Claim 2
Dependent Claim
182 words
A humidifier comprising a container having two communicating chambers, a heating device mounted in one chamber for vaporizing water supplied to said chamber from the second chamber disposed side by side to said one chamber and including cold water, a housing surrounding the container so as to form an air channel between the housing and the container extending across opposite side walls and the bottom wall of the container, the housing having an air inlet opening adjacent to the cold water chamber and an air outlet opening therein adjacent said chamber for vaporizing water, said inlet opening and outlet opening being connected by said air channel, the ends to the air channel being of different temperature and due to convection causing a flow of air from the exterior into the channel and through the channel, and a hygrostatic switch mounted in the air channel adjacent said air inlet opening and acted upon by the flow of air from the exterior, so as to control the heating device upon the humidity of the surrounding air decreasing below or increasing above a predetermined value.
Claim 3
Dependent Claim
26 words
A humidifier according to claim 1, characterized in that the communicating chambers of the container are separated by at least one separating wall of insulating material.
Claim 4
Dependent Claim
39 words
A humidifier according to claim 1, characterized in that the cold water chamber of the container is separated from the adjacent air channel and the hygrostatic switch at the air inlet opening by a separating wall of insulating material.
Claim 5
Dependent Claim
42 words
Humidifier according to claim 1, characterized in that the air inlet and the air outlet openings are located in the housing close to its upper edge and are of a size suitable to form hand holds in order to carry the humidifier.
Claim 6
Dependent Claim
37 words
A humidifier according to claim 1, characterized in that upon reaching an intended value for the moisture, the hygrostatic switch will switch the heating device to a reduced heating performance in order to maintain a convection current.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |