Patent US3673407A successfully refreshed from Google Patents.
US3673407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiographic apparatus for underwater inspection of wooden pilings
Assignee: Individual
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Filing: 1969-02-19
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Granted: 1972-06-27
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Expires: 1989-02-19
Abstract
Abstract An underwater apparatus employing radioactive material comprising a cylindrical chamber having a flexible end wall with the chamber being mounted against an underwater object through which the radiant energy rays are to be passed for radiographic purposes so that the flexible wall conforms to the surface of the object. A film pack is retained on the other side of the object opposite the flexible wall, and water is evacuated from the chamber. A source of radiation is positioned through a flexible conduit into the closed chamber opposite the flexible wall. The chamber has an inlet valve connected to a source of air under pressure and an exhaust valve.
Inventors
- 👤 George C Wiswell Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:12
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/02; G01N23/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
143 words
In an apparatus for the taking of radiographs of underwater pilings, a closed cylindrical chamber is rigid material having one end wall flexible, an inlet valve on the other end of said chamber, a source of air under pressure connected to said inlet valve, an outlet valve in said chamber for evacuating water from said chamber, said chamber being positioned radially of and with the flexible wall thereof engaging the exterior of said piling, flexible mounting means embracing said piling for mounting said chamber thereon, a source of radiation within said chamber opposite said flexible wall, a flexible conduit for permitting selective movement of said source of radiation between an above water position and said chamber, means for retaining a film pack on the side of said underwater piling opposite from said flexible wall, whereby a radiograph of said piling will be produced.
Claim 2
Dependent Claim
143 words
In an apparatus for the taking of radiographs of underwater pilings, a closed cylindrical chamber is rigid material having one end wall flexible, an inlet valve on the other end of said chamber, a source of air under pressure connected to said inlet valve, an outlet valve in said chamber for evacuating water from said chamber, said chamber being positioned radially of and with the flexible wall thereof engaging the exterior of said piling, flexible mounting means embracing said piling for mounting said chamber thereon, a source of radiation within said chamber opposite said flexible wall, a flexible conduit for permitting selective movement of said source of radiation between an above water position and said chamber, means for retaining a film pack on the side of said underwater piling opposite from said flexible wall, whereby a radiograph of said piling will be produced.
Claim 3
Dependent Claim
23 words
In an apparatus as claimed in claim 1 and comprising a second exhaust valve on the upper cylindrical surface of said closed chamber.
Claim 4
Dependent Claim
23 words
In an apparatus as claimed in claim 1 and comprising a second exhaust valve on the upper cylindrical surface of said closed chamber.
Claim 5
Dependent Claim
40 words
In an apparatus as claimed in claim 1 wherein said chamber mounting means comprises vertical rod means extending oppositely on the outer surface of said closed chamber, and detachable means on both said rod means for clamping around the piling.
Claim 6
Dependent Claim
40 words
In an apparatus as claimed in claim 1 wherein said chamber mounting means comprises vertical rod means extending oppositely on the outer surface of said closed chamber, and detachable means on both said rod means for clamping around the piling.
References Cited (Backward Citations)
US3136892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |