US4682729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snowmaking machine with compressed air driven reaction fan
Assignee: Dewey Electronics Corp
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Filing: 1985-12-16
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Granted: 1987-07-28
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Expires: 2005-12-16
Abstract
Abstract A snowmaking apparatus comprising a tunnel-like housing a fan mounted within the housing to move large masses of air through the housing. Water nozzles and ice nucleating nozzles are disposed downstream of the fan. The fan is a compressed air reaction driven fan which provides a region of air lower in temperature within the housing than ambient to enhance the snowmaking process.
Inventors
- 👤 D. Mark Doman
- 👤 William R. Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:11
CPC Classifications
F; F25; F25C; F25C3/00; F25C3/04; F25C2303/00; F25C2303/046; F25C2303/048; F25C2303/0481
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
77 words
A method for making snow which includes: creating ice nuclei; forming water droplets; forming an airstream and flowing said airstream through a housing; supercooling said airstream approximately 2° F. lower than ambient by the expansion of compressed air; flowing the supercooled airstream into the water droplets and ice nuclei; commingling in the supercooled airstream, the ice ncluei and the water droplets to form an ice nuclei-water droplet mixture; discharing the mixture to ambient to form snow-like crystals.
Claim 2
Independent Claim
77 words
A method for making snow which includes: creating ice nuclei; forming water droplets; forming an airstream and flowing said airstream through a housing; supercooling said airstream approximately 2° F. lower than ambient by the expansion of compressed air; flowing the supercooled airstream into the water droplets and ice nuclei; commingling in the supercooled airstream, the ice ncluei and the water droplets to form an ice nuclei-water droplet mixture; discharing the mixture to ambient to form snow-like crystals.
Claim 3
Dependent Claim
15 words
The method of claim 1 which includes: discharging the compressed air from a reaction fan.
Claim 4
Dependent Claim
14 words
The method of claim 1 which includes: flowing the supercooled airstream through a housing.
Claim 5
Dependent Claim
19 words
The method of claim 3 which includes: discharging from a reaction fan a plurality of jets of compressed air.
Claim 6
Dependent Claim
22 words
The method of claim 4 which includes: forming additional ice nuclei when the compressed air jets are discharged from the reaction fan.
Claim 7
Dependent Claim
24 words
The method of claim 1 which includes: forming the ice nuclei in a first zone; forming the water droplets in a second separate zone.
Claim 8
Dependent Claim
22 words
The method of claim 6 which includes: forming the ice nuclei and water droplets downstream of the formation of the supercooled airsteam.
Claim 9
Dependent Claim
92 words
A snowmaking system which comprises: a housing; means to create ice nuclei; means to form water droplets; a fan to form an airstream to flow through the housing spaced apart from the means to create the ice nuclei and the means to form the water droplets; means to discharge compressed air to supercool the airstream approximately 2° F. lower than ambient; and means to flow the supercooled airstream into the ice nuclei and water droplets whereby the ice nuclei and water droplets are mixed and discharged into ambient to form snowlike crystals.
Claim 10
Dependent Claim
92 words
A snowmaking system which comprises: a housing; means to create ice nuclei; means to form water droplets; a fan to form an airstream to flow through the housing spaced apart from the means to create the ice nuclei and the means to form the water droplets; means to discharge compressed air to supercool the airstream approximately 2° F. lower than ambient; and means to flow the supercooled airstream into the ice nuclei and water droplets whereby the ice nuclei and water droplets are mixed and discharged into ambient to form snowlike crystals.
Claim 11
Dependent Claim
27 words
The system of claim 8 wherein: the means to create the ice nuclei and the means to form the water droplets are spaced apart from one another.
Claim 12
Dependent Claim
12 words
The system of claim 8 wherein the housing is a tunnel-like housing.
Claim 13
Dependent Claim
26 words
The system of claim 8 wherein the fan is a reaction fan, and the supercooling is effected by the compressed air discharged from said reaction fan.
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) | 1990-07-27 | 1991-01-26 | 1991-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-27 | 1995-01-26 | 1995-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-27 | 1999-01-26 | 1999-07-28 | $7700.00 | Window Closed / Lapsed |