US3636964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed air feed system for pure fluid devices
Assignee: Consiglio Nazionale delle Richerche
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Filing: 1969-11-14
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Granted: 1972-01-25
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Expires: 1989-11-14
Abstract
Abstract A jet ejector-type device for feeding compressed air to pure fluid devices is supplied by mains air at a pressure of about 6 atmospheres. The mains air passes through a Laval nozzle into a mixing chamber into which open a plurality of inlets from the atmosphere. Atmospheric air is drawn into the mixing chamber, is mixed with the mains air, and the resulting stream passes through an outlet conduit having a portion of enlarged section to feed the pure fluid devices.
Inventors
- 👤 Arturo Ferrara Colamussi
- 👤 Pier Gabriele Molari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:24
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/02; F04; F04F; F04F5/00; F04F5/44; F04F5/46; F04F5/465; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/206; Y10T137/2273
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
90 words
A method of feeding compressed air into a pure fluid device comprising compressing air in a lubricated compressor thereby providing compressed air having a significant amount of lubricating oil entrained therein, passing said compressed air through a Laval nozzle which discharges into a mixing chamber admitting atmospheric air to the mixing chamber to mix with the compressed air, said atmospheric air being admitted in sufficient quantity to prevent the formation of oil on the surface of the pure fluid device and feeding the mixed air to the pure fluid device.
Claim 2
Independent Claim
90 words
A method of feeding compressed air into a pure fluid device comprising compressing air in a lubricated compressor thereby providing compressed air having a significant amount of lubricating oil entrained therein, passing said compressed air through a Laval nozzle which discharges into a mixing chamber admitting atmospheric air to the mixing chamber to mix with the compressed air, said atmospheric air being admitted in sufficient quantity to prevent the formation of oil on the surface of the pure fluid device and feeding the mixed air to the pure fluid device.
Claim 3
Dependent Claim
79 words
A method as set forth in claim 1 wherein the air is compressed in the compressor to a pressure of about 6 atmospheres, the weight of atmospheric air admitted to the mixing chamber is twice the weight of air supplied to the mixing chamber from the compressor through the Laval nozzle and the air fed from the mixing chamber to the pure fluid device is fed at a pressure in the range from 50 to 100 mm. of mercury.
Claim 4
Dependent Claim
99 words
A fluidic system for supplying compressed air to a fluidic device comprising lubricated compressor means, mixing chamber means located in said fluid device, first inlet passage means connecting said compressor means to said chamber means including a Laval nozzle, second inlet passage means connecting said chamber means to atmosphere for admitting atmospheric air into said chamber means and outlet means leading from said chamber means, said second inlet passage means being dimensioned to admit sufficient atmospheric air to mix with the lubricant contaminated compressed air to maintain the lubricant contaminant in suspension when fed through said outlet passage means.
Claim 5
Dependent Claim
99 words
A fluidic system for supplying compressed air to a fluidic device comprising lubricated compressor means, mixing chamber means located in said fluid device, first inlet passage means connecting said compressor means to said chamber means including a Laval nozzle, second inlet passage means connecting said chamber means to atmosphere for admitting atmospheric air into said chamber means and outlet means leading from said chamber means, said second inlet passage means being dimensioned to admit sufficient atmospheric air to mix with the lubricant contaminated compressed air to maintain the lubricant contaminant in suspension when fed through said outlet passage means.
Claim 6
Dependent Claim
18 words
A fluidic system as set forth in claim 3 wherein said compressor means is a lubricated reciprocating compressor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |