US4181153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidic-amplifier device having tube in outlet channel
Assignee: McQuay Perfex Inc
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Filing: 1977-08-24
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Granted: 1980-01-01
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Expires: 1997-08-24
Abstract
Abstract The present invention involves the insertion and use of a tube in one of the outlet channels of a pure fluid bistable amplifier. The amplifier will function so long as the cross-sectional area of the tube is less than twenty percent (20%) of the cross-sectional area of the outlet in which it is mounted. The advantage of the tube is that velocity-pressure recovery can be as high as eighty percent (80%) as compared to forty eight percent (48%) without it.
Inventors
- 👤 Gene W. Osheroff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:09
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2229; Y10T137/2251
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
102 words
A pure-fluid device comprising: a pure-fluid bistable amplifier having an input channel, a pair of diverging outlet channels forming a splitter there between and a pair of control channels, said outlet channels respectively having rectangular-shaped cross-sections; and a velocity-pressure recovery tube of circular cross-section mounted in one of said outlet channels along and contiguous to the wall thereof that is adjacent the splitter, the mouth of said tube being positioned adjacent the apex of said splitter and the cross-sectional area of said tube being not more than twenty percent of the cross-sectional area of the outlet channel in which it is mounted.
Claim 2
Dependent Claim
102 words
A pure-fluid device comprising: a pure-fluid bistable amplifier having an input channel, a pair of diverging outlet channels forming a splitter there between and a pair of control channels, said outlet channels respectively having rectangular-shaped cross-sections; and a velocity-pressure recovery tube of circular cross-section mounted in one of said outlet channels along and contiguous to the wall thereof that is adjacent the splitter, the mouth of said tube being positioned adjacent the apex of said splitter and the cross-sectional area of said tube being not more than twenty percent of the cross-sectional area of the outlet channel in which it is mounted.
Claim 3
Dependent Claim
18 words
The pure-fluid device defined in claim 1 wherein the cross-sectional areas of said outlet channels are substantially square-shaped.
References Cited (Backward Citations)
US3923244A
Cited
US3840177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-31 | 1983-07-02 | 1984-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-31 | 1987-07-02 | 1988-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-31 | 1991-07-02 | 1992-01-01 | $7700.00 | Window Closed / Lapsed |