US3739144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric sauna unit
Assignee: Individual
•
Filing: 1971-05-20
•
Granted: 1973-06-12
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Expires: 1991-05-20
Abstract
Abstract In an electric sauna unit there is a nozzle for sprinkling water over heated stones in a stone receiving chamber. The bottom of this chamber forms a trough collecting water which has not vaporized, and an electric heating element extends into this trough. The supply of water is controlled by a valve operatively connected with a thermostatic element exposed to the external heat radiation from the bottom of the trough. Instead of a thermostatic switch for controlling the water supply, this can be achieved by a bimetallic spring arranged adjacent the bottom of the cabinet and mechanically connected to a control valve. In the water conduit may be disposed a manually disposed throttle valve. The water control valve may be a solenoid valve which is periodically opened and closed.
Inventors
- 👤 S Janson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:17
CPC Classifications
A; A61; A61H; A61H33/00; A61H33/06; A61H33/063; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6606
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
185 words
An electric sauna unit comprising an upright tubular casing open at the top and bottom to provide a vertical air passage, a housing within said air passage and around which an air stream flows, said housing forming a chamber for stone-like heat accumulating bodies, a nozzle extending inside said chamber for sprinkling water over said heat accumulating bodies to create a vapor, a water tight trough in the bottom of said chamber and in which unvaporized water collects, an electric heating means within said chamber for heating said heat accumulating bodies, said electric heating means including an element extending into said trough for vaporizing water accumulating therein, a conduit for conducting water to said nozzle, a valve for controlling the flow of water through said conduit, temperature controlled means for effecting actuation of said valve in response to the temperature of said trough, so that said valve is closed when the trough temperature is below a predetermined value and opened when the trough temperature is above said predetermined value, such as when there is no water in said trough, and, a source of electrical energy.
Claim 2
Dependent Claim
185 words
An electric sauna unit comprising an upright tubular casing open at the top and bottom to provide a vertical air passage, a housing within said air passage and around which an air stream flows, said housing forming a chamber for stone-like heat accumulating bodies, a nozzle extending inside said chamber for sprinkling water over said heat accumulating bodies to create a vapor, a water tight trough in the bottom of said chamber and in which unvaporized water collects, an electric heating means within said chamber for heating said heat accumulating bodies, said electric heating means including an element extending into said trough for vaporizing water accumulating therein, a conduit for conducting water to said nozzle, a valve for controlling the flow of water through said conduit, temperature controlled means for effecting actuation of said valve in response to the temperature of said trough, so that said valve is closed when the trough temperature is below a predetermined value and opened when the trough temperature is above said predetermined value, such as when there is no water in said trough, and, a source of electrical energy.
Claim 3
Dependent Claim
35 words
An electric sauna unit as claimed in claim 1, in which said valve is solenoid controlled, and a bimetallic switch in the line leading to said solenoid periodically operating to open and close said valve.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |