Patent US3255708A successfully refreshed from Google Patents.
US3255708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ejector pump
Assignee: Boeing Co
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Filing: 1964-01-02
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Granted: 1966-06-14
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Expires: 1984-01-02
Abstract
No abstract record available.
Inventors
- 👤 Robert L Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:04
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/46; F04F5/466; Y; Y10; Y10S; Y10S261/00; Y10S261/75
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
279 words
AN EJECTOR PUMP COMPRISING, EJECTOR MEANS, AND EDUCATOR MEANS FORMING A PLURALITY OF COPLANAR AND PARALLEL AND EQUALLY SPACED FLUID PASSAGE MEANS AND COMMON EXHAUST DUCT MEANS THEREIN, SAID FLUID PASSAGE MEANS EACH HAVING RADIUSED LIP FLUID INLET MEANS AND CYLINDRICAL THROAT MEANS AND FRUSTO-CONICALLY FLARED FLUID EXPANSION CHAMBER MEANS, SAID RADIUSED LIP FLUID INLET MEANS BEING COAXIAL AND CONTIGUOUS WITH AND CONNECTED TO SAID CYLINDRICAL THROAT MEANS, SAID CYLINDRICAL THROAT MEANS BEING COAXIAL AND CONTIGUOUS WITH AND CONNECTED TO SAID FRUSTO-CONICALLY FLARED FLUID EXPANSION CHAMBER MEANS, SAID COMMON EXHAUST DUCT MEANS OF SAID EDUCTOR MEANS BEING CONTIGUOUS WITH AND CONNECTED TO SAID FLUID PASSAGE MEANS, SAID COMMON EXHAUST DUCT MEANS FORMING A FLUID FLOW PATH PARALLEL TO AND COPLANAR WITH SAID FLUID PASSAGE MEANS, SAID COMMON EXHAUST DUCT MEANS HAVING A SUBSTANTIALLY CONSTANT AREA CROSS-SECTION NORMAL TO AND ALONG SAID FLUID FLOW PATH, SAID COMMON EXHAUST DUCT MEANS HAVING AN ELONGATED CONFIGURATION WITH PARALLEL SIDES AND ARCUATE ENDS IN NORMAL CROSS-SECTION AT THE INTAKE END THEREOF AND HAVING A CIRCULAR CONFIGURATION AT THE EXIT END THEREOF, SAID EJECTOR MEANS HAVING A TUBULAR FLUID CONDUIT MEANS AND MANIFOLD MEANS AND A PLURALITY OF NOZZLE MEANS, SAID FLUID CONDUIT MEANS BEING CONNECTED TO SAID MANIFOLD MEANS FOR CONDUCTING FLUID TO SAID MANIFOLD MEANS, SAID PLURALITY OF NOZZLE MEANS BEING PARALLEL AND COPLANAR AND CONNECTED TO SAID MANIFOLD MEANS, ONE OF SAID NOZZLE MEANS BEING COAXIALLY ALIGNED WITH AND DISPOSED IN EACH ONE OF SAID PLURALITY OF EDUCTOR FLUID PASSAGE MEANS, AND THE TIP OF EACH SAID NOZLE MEANS EXTENDING THE LENGTH OF SAID RADIUSED LIP FLUID INLET MEANS THEREOF AND TERMINATING AT THE BEGINNING OF SAID CYLINDRICAL THROAT MEANS THEREOF.
Claim 2
Dependent Claim
279 words
AN EJECTOR PUMP COMPRISING, EJECTOR MEANS, AND EDUCATOR MEANS FORMING A PLURALITY OF COPLANAR AND PARALLEL AND EQUALLY SPACED FLUID PASSAGE MEANS AND COMMON EXHAUST DUCT MEANS THEREIN, SAID FLUID PASSAGE MEANS EACH HAVING RADIUSED LIP FLUID INLET MEANS AND CYLINDRICAL THROAT MEANS AND FRUSTO-CONICALLY FLARED FLUID EXPANSION CHAMBER MEANS, SAID RADIUSED LIP FLUID INLET MEANS BEING COAXIAL AND CONTIGUOUS WITH AND CONNECTED TO SAID CYLINDRICAL THROAT MEANS, SAID CYLINDRICAL THROAT MEANS BEING COAXIAL AND CONTIGUOUS WITH AND CONNECTED TO SAID FRUSTO-CONICALLY FLARED FLUID EXPANSION CHAMBER MEANS, SAID COMMON EXHAUST DUCT MEANS OF SAID EDUCTOR MEANS BEING CONTIGUOUS WITH AND CONNECTED TO SAID FLUID PASSAGE MEANS, SAID COMMON EXHAUST DUCT MEANS FORMING A FLUID FLOW PATH PARALLEL TO AND COPLANAR WITH SAID FLUID PASSAGE MEANS, SAID COMMON EXHAUST DUCT MEANS HAVING A SUBSTANTIALLY CONSTANT AREA CROSS-SECTION NORMAL TO AND ALONG SAID FLUID FLOW PATH, SAID COMMON EXHAUST DUCT MEANS HAVING AN ELONGATED CONFIGURATION WITH PARALLEL SIDES AND ARCUATE ENDS IN NORMAL CROSS-SECTION AT THE INTAKE END THEREOF AND HAVING A CIRCULAR CONFIGURATION AT THE EXIT END THEREOF, SAID EJECTOR MEANS HAVING A TUBULAR FLUID CONDUIT MEANS AND MANIFOLD MEANS AND A PLURALITY OF NOZZLE MEANS, SAID FLUID CONDUIT MEANS BEING CONNECTED TO SAID MANIFOLD MEANS FOR CONDUCTING FLUID TO SAID MANIFOLD MEANS, SAID PLURALITY OF NOZZLE MEANS BEING PARALLEL AND COPLANAR AND CONNECTED TO SAID MANIFOLD MEANS, ONE OF SAID NOZZLE MEANS BEING COAXIALLY ALIGNED WITH AND DISPOSED IN EACH ONE OF SAID PLURALITY OF EDUCTOR FLUID PASSAGE MEANS, AND THE TIP OF EACH SAID NOZLE MEANS EXTENDING THE LENGTH OF SAID RADIUSED LIP FLUID INLET MEANS THEREOF AND TERMINATING AT THE BEGINNING OF SAID CYLINDRICAL THROAT MEANS THEREOF.
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |