US3756344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser-driven shock tube
Assignee: Calspan Corp
•
Filing: 1971-12-22
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Granted: 1973-09-04
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Expires: 1991-12-22
Abstract
Abstract A laser driven shock tube wherein a laser is focused in the vicinity of a supersonic free expansion jet orifice at one end of a shock tube whereby a hot plasma is generated which drives a shock wave through the orifice and into the tube.
Inventors
- 👤 J Daiber
- 👤 R Rehm
- 👤 H Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:09
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/0007
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
67 words
Apparatus of the character described, comprising; a. a high pressure chamber, b. a low pressure chamber, c. means providing restricted communication between said chambers, d. coherent radiation producing means, e. means for focusing the radiation from said producing means in the vicinity of said means providing restricted communication, and f. the pressure differential across said means providing restricted communication is such that a supersonic flow occurs therethrough.
Claim 2
Dependent Claim
67 words
Apparatus of the character described, comprising; a. a high pressure chamber, b. a low pressure chamber, c. means providing restricted communication between said chambers, d. coherent radiation producing means, e. means for focusing the radiation from said producing means in the vicinity of said means providing restricted communication, and f. the pressure differential across said means providing restricted communication is such that a supersonic flow occurs therethrough.
Claim 3
Dependent Claim
41 words
The apparatus according to claim 1 wherein said high pressure chamber comprises a hollow tube having one or more walls, and said means providing restricted communication comprises free expansion jet orifice means in said one or more walls of said tube.
Claim 4
Dependent Claim
21 words
The apparatus according to claim 2 further comprising frangible means dividing said tube into a driver chamber and a driven chamber.
Claim 5
Dependent Claim
16 words
The apparatus according to claim 3 wherein said jet orifice means communicates with said driver chamber.
Claim 6
Dependent Claim
20 words
The apparatus according to claim 1 further comprising a frangible diaphragm in said means providing restricted communication between said chambers.
Claim 7
Dependent Claim
34 words
The apparatus according to claim 1 wherein said high pressure chamber comprises a shock tube, and said means providing restricted communication comprises a free expansion jet orifice at one end of said shock tube.
References Cited (Backward Citations)
US3410142A
Cited
US3489645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |