US3662590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precooling apparatus for continuous automatic ultrasonic inspection
Assignee: Nippon Steel Corp
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Filing: 1970-07-29
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Granted: 1972-05-16
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Expires: 1990-07-29
Abstract
Abstract A continuous automatic ultrasonic inspection apparatus detects flaws in a material by transmitting pulses or continuous waves into the material to be inspected through the medium of a laminar flow water jet column. The precooling apparatus is provided near the laminar flow water jet column and improves the accuracy of flaw detection of the material at high temperature moving at high speed and also increases the maximum inspection temperature.
Inventors
- 👤 Toshio Shiraiwa
- 👤 Hisao Yamaguchi
- 👤 Yasunori Kido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:38
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
178 words
In combination with an ultrasonic flaw detector comprising a main nozzle arranged to emit a laminar flow water jet column against a material moving past the main nozzle, ultrasonic energy being transmitted to the material through the laminar flow water jet column and being reflected therefrom through the column: a precooling apparatus comprising 1. a group of nozzles disposed upstream from the main nozzle in the moving direction of the material for emitting cooling water sprays on the moving material, and 2. at least one additional water spray nozzle disposed between the main nozzle and said group of nozzles for emitting a cooling water spray on the material, each additional water spray nozzle being arranged to emit the water spray in a direction opposite the moving direction of the material and to strike the material at a point between 30 mm and 300 mm upstream of the point at which the laminar flow water jet column strikes the material whereby the cooling water from the group of nozzles is prevented from mixing with the water from said column.
Claim 2
Dependent Claim
178 words
In combination with an ultrasonic flaw detector comprising a main nozzle arranged to emit a laminar flow water jet column against a material moving past the main nozzle, ultrasonic energy being transmitted to the material through the laminar flow water jet column and being reflected therefrom through the column: a precooling apparatus comprising 1. a group of nozzles disposed upstream from the main nozzle in the moving direction of the material for emitting cooling water sprays on the moving material, and 2. at least one additional water spray nozzle disposed between the main nozzle and said group of nozzles for emitting a cooling water spray on the material, each additional water spray nozzle being arranged to emit the water spray in a direction opposite the moving direction of the material and to strike the material at a point between 30 mm and 300 mm upstream of the point at which the laminar flow water jet column strikes the material whereby the cooling water from the group of nozzles is prevented from mixing with the water from said column.
Claim 3
Dependent Claim
96 words
at least one additional water spray nozzle disposed between the main nozzle and said group of nozzles for emitting a cooling water spray on the material, each additional water spray nozzle being arranged to emit the water spray in a direction opposite the moving direction of the material and to strike the material at a point between 30 mm and 300 mm upstream of the point at which the laminar flow water jet column strikes the material whereby the cooling water from the group of nozzles is prevented from mixing with the water from said column.
Claim 4
Dependent Claim
96 words
at least one additional water spray nozzle disposed between the main nozzle and said group of nozzles for emitting a cooling water spray on the material, each additional water spray nozzle being arranged to emit the water spray in a direction opposite the moving direction of the material and to strike the material at a point between 30 mm and 300 mm upstream of the point at which the laminar flow water jet column strikes the material whereby the cooling water from the group of nozzles is prevented from mixing with the water from said column.
Claim 5
Dependent Claim
22 words
In the combination of claim 2, wherein the nozzles of the group are each adapted to emit a laminar flow water jet.
Claim 6
Dependent Claim
21 words
In the combination of claim 2, wherein each additional water spray nozzle is directed against the material at an acute angle.
References Cited (Backward Citations)
FR1275693A
Cited
US3303691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |