US3791764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable area ratio jet pump
Assignee: Zodiac Acquisition Corp
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Filing: 1972-03-01
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Granted: 1974-02-12
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Expires: 1992-03-01
Abstract
Abstract A jet pump having a large ratio of the area of the mixing tubular member to the primary nozzle or nozzles area, is arranged for constriction of the mixing tube upon the application of fluid pressure on the exterior surface, resulting in a gradually decreasing mixing tube throat with a resulting considerable decrease in the area ratio.
Inventors
- 👤 J Summer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:21
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/48; F04F5/50; F04F5/14; F04F5/16; F04F5/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
118 words
Apparatus for controlling a flow of fluid from a source into a fluid distensible chamber, comprising: a. a substantially cylindrical conduit adapted for coupling between the source and the chamber, a portion of the wall of said conduit being deflectable thereinto to vary the fluid flow therethrough, said deflectable conduit portion defined by relatively narrow and elongate alternating slot voids and slot strip material extending substantially parallel to the axis of said cylindrical conduit between the end portions thereof; and b. means for applying a deflection force on said wall portion comprising a sleeve of impervious fluid distensible material overlying said deflectable conduit portion, said means being adapted to being subjected to the fluid pressure in the chamber.
Claim 2
Dependent Claim
118 words
Apparatus for controlling a flow of fluid from a source into a fluid distensible chamber, comprising: a. a substantially cylindrical conduit adapted for coupling between the source and the chamber, a portion of the wall of said conduit being deflectable thereinto to vary the fluid flow therethrough, said deflectable conduit portion defined by relatively narrow and elongate alternating slot voids and slot strip material extending substantially parallel to the axis of said cylindrical conduit between the end portions thereof; and b. means for applying a deflection force on said wall portion comprising a sleeve of impervious fluid distensible material overlying said deflectable conduit portion, said means being adapted to being subjected to the fluid pressure in the chamber.
Claim 3
Dependent Claim
121 words
In combination: a source of pressurized elastic fluid; a fluid distensible chamber to be inflated with pressurized elastic fluid from said source; and jet pump means operably disposed between said source and said chamber, said jet pump means including a substantially cylindrical rigid conduit extending into said chamber and a radially inwardly deflectable sleeve disposed in a portion of said conduit, said rigid conduit having openings therein in the portion of the conduit in which said deflectable sleeve is disposed to enable the fluid pressure in said chamber to be communicated to the exterior of said sleeve to radially inwardly deflect said sleeve, in response to chamber fluid pressure, into a variable area nozzle for the flow of pressurized fluid therethrough.
Claim 4
Dependent Claim
121 words
In combination: a source of pressurized elastic fluid; a fluid distensible chamber to be inflated with pressurized elastic fluid from said source; and jet pump means operably disposed between said source and said chamber, said jet pump means including a substantially cylindrical rigid conduit extending into said chamber and a radially inwardly deflectable sleeve disposed in a portion of said conduit, said rigid conduit having openings therein in the portion of the conduit in which said deflectable sleeve is disposed to enable the fluid pressure in said chamber to be communicated to the exterior of said sleeve to radially inwardly deflect said sleeve, in response to chamber fluid pressure, into a variable area nozzle for the flow of pressurized fluid therethrough.
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |