Patent US4667011A successfully refreshed from Google Patents.
US3886478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-component flow injector pump for a flowing gas laser with low output pressure
Assignee: United States Department of the Navy
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Filing: 1973-11-05
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Granted: 1975-05-27
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Expires: 1993-11-05
Abstract
Abstract A pumping system for a chemical laser having a heat exchanger in the output for supplying heat to the diluent carrier gas from a high pressure gas supply. The diluent carrier gas is used to accelerate solid particles which are then separated from the gas stream and used to accelerate the output gas of the laser. The kinetic energy of the gas stream is then converted to a gas stream pressure in an expanding channel. The solid particles are then removed from the gas and returned to the particle supply.
Inventors
- 👤 Robert W Milling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:08
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/095
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
198 words
A gas flow pumping system for a laser having a low pressure output flow, comprising: a high pressure diluent carrier gas supply; means for supplying a flow of said carrier gas to said laser; a heat exchanger having a first flow path connected in the gas flow output of the laser; said carrier gas supplying means including means, for passing the gas from said high pressure supply through a second gas flow path through said heat exchanger; means for accelerating the output gas, from the second gas flow path of the heat exchanger, to a supersonic velocity; means for supplying solid particles to the supersonic velocity flow of gas between the heat exchanger and the laser, for accelerating said particles to a high velocity; means for separating said particles from the flow of carrier gas to said laser; means for directing said separated high velocity particles into the output gas flow of the laser to thereby accelerate the output flow of the laser to a high velocity flow by energy exchange from the particles to the laser output flow; means for converting the kinetic energy of the accelerated laser output gas flow to a gas stream pressure increase.
Claim 2
Dependent Claim
198 words
A gas flow pumping system for a laser having a low pressure output flow, comprising: a high pressure diluent carrier gas supply; means for supplying a flow of said carrier gas to said laser; a heat exchanger having a first flow path connected in the gas flow output of the laser; said carrier gas supplying means including means, for passing the gas from said high pressure supply through a second gas flow path through said heat exchanger; means for accelerating the output gas, from the second gas flow path of the heat exchanger, to a supersonic velocity; means for supplying solid particles to the supersonic velocity flow of gas between the heat exchanger and the laser, for accelerating said particles to a high velocity; means for separating said particles from the flow of carrier gas to said laser; means for directing said separated high velocity particles into the output gas flow of the laser to thereby accelerate the output flow of the laser to a high velocity flow by energy exchange from the particles to the laser output flow; means for converting the kinetic energy of the accelerated laser output gas flow to a gas stream pressure increase.
Claim 3
Dependent Claim
35 words
The device as recited in claim 1 wherein the particles are glass beads; means, for separating the solid particles from the gas stream and means for returning the solid particles to the particle supplying means.
Claim 4
Dependent Claim
61 words
The device as recited in claim 2 wherein the means for separating the solid particles from the carrier gas flow comprises means for bending the gas flow whereby the solid particles are centrifuged out of the gas flow; means, adjacent the means for bending the gas flow, for admitting the particle flow to the flow of output gas from the laser.
Claim 5
Dependent Claim
66 words
The device as recited in claim 3 wherein a converging-diverging nozzle is located in the laser gas supplying means between the heat exchanger and the means for bending the gas flow; said solid particles being supplied to the flow within the converging portion of the nozzle whereby the solid particles are accelerated to a high velocity by energy exchange in the diverging portion of the nozzle.
References Cited (Backward Citations)
US3046732A
Cited
US3688215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |