US4275833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snow-making apparatus
Assignee: Individual
•
Filing: 1980-01-21
•
Granted: 1981-06-30
•
Expires: 2000-01-21
Abstract
Abstract An improved, portable and directional snow-making apparatus of the type consisting of an inner pipe and an outer jacket provides an optimum geometry to both the inner pipe and outer jacket for optimum snow formation. Directional facility is attained by means of a carefully-controlled ratio between the apertures in the outer pipe relative to the apertures in the inner pipe, as well as a dual pair of adjustable legs. The diameter of the pipe apertures controls the spray pattern of the snow, whereas the legs can be adjusted to accommodate the snow formation relative to the pitch of the ski trail.
Inventors
- 👤 Brian H. Fairbank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:49
CPC Classifications
F; F25; F25C; F25C3/00; F25C3/04; F25C2303/00; F25C2303/048; F25C2303/0481
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
An improved snow-making nozzle of the type consisting of an inner water-carrying pipe having a plurality of apertures within an outer air-carrying jacket having a plurality of apertures wherein the improvement comprises: both said inner pipe and said outer jacket having a curvilinear configuration for causing said water and air to exit in a plurality of streams which do not contact and interfere with each other until snow formation occurs, for distributing snow for long operating periods of time without freeze-up, said curvilinear inner pipe and said curvilinear outer jacket having a radius of curvature determined by the ratio of the linear separation distance h between a center portion of said outer jacket in a line l defining the shortest linear distance between the ends of said outer jacket, said inner pipe and said outer jacket have a calculated radius of curvature between 10/feet and 2 feet.
Claim 2
Dependent Claim
147 words
An improved snow-making nozzle of the type consisting of an inner water-carrying pipe having a plurality of apertures within an outer air-carrying jacket having a plurality of apertures wherein the improvement comprises: both said inner pipe and said outer jacket having a curvilinear configuration for causing said water and air to exit in a plurality of streams which do not contact and interfere with each other until snow formation occurs, for distributing snow for long operating periods of time without freeze-up, said curvilinear inner pipe and said curvilinear outer jacket having a radius of curvature determined by the ratio of the linear separation distance h between a center portion of said outer jacket in a line l defining the shortest linear distance between the ends of said outer jacket, said inner pipe and said outer jacket have a calculated radius of curvature between 10/feet and 2 feet.
Claim 3
Dependent Claim
29 words
The improved nozzle of claim 1 wherein the ratio of the diameter of said inner pipe apertures to the diameter of said outer jacket apertures is 3 to 5.
Claim 4
Dependent Claim
42 words
The improved nozzle of claim 1 wherein one of said inner water pipe apertures is proximate one end of said pressurized air and exits through said outer jacket apertures in divergent streams to form snow powder in cold operating conditions without freeze-up.
Claim 5
Dependent Claim
28 words
The improved nozzle of claim 1 further including a pair of adjustable legs at each end for controlling the angle of snow distribution relative to a ski slope.
Claim 6
Dependent Claim
137 words
An improved method for manufacturing snow of the type consisting of transmitting water through an inner water pipe having a plurality of apertures and transmitting pressurized air through an outer air jacket having a plurality of apertures, said outer jacket apertures being larger than and in registry with said inner pipe apertures wherein the improvement comprises: bending said inner water pipe and outer air jacket into a curvilinear configuration having a radius of curvature from 2 to 10 feet to produce a snow powder of predetermined size by causing said air and water to exit in divergent streams, said radius of curvature being determined by the ratio of the linear separation distance h between a center portion of said outer jacket and in line l defining the shortest linear distance between the ends of said outer jacket.
Claim 7
Dependent Claim
137 words
An improved method for manufacturing snow of the type consisting of transmitting water through an inner water pipe having a plurality of apertures and transmitting pressurized air through an outer air jacket having a plurality of apertures, said outer jacket apertures being larger than and in registry with said inner pipe apertures wherein the improvement comprises: bending said inner water pipe and outer air jacket into a curvilinear configuration having a radius of curvature from 2 to 10 feet to produce a snow powder of predetermined size by causing said air and water to exit in divergent streams, said radius of curvature being determined by the ratio of the linear separation distance h between a center portion of said outer jacket and in line l defining the shortest linear distance between the ends of said outer jacket.
References Cited (Backward Citations)
US2962091A
Cited
US2952413A
Cited
US3464625A
Cited
US3559888A
Cited
US4145000A
Cited
US4194689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |