Patent US3891845A successfully refreshed from Google Patents.
US3891845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet environment radiography apparatus
Assignee: Individual
•
Filing: 1972-12-18
•
Granted: 1975-06-24
•
Expires: 1992-12-18
Abstract
Abstract A wet environment radiography apparatus attachable to the exterior surface of an object which is to be radiographed where the exterior surface is in a wet environment.
Inventors
- 👤 Paul Nelson English
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:30
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/02; G01N23/04; G03; G03B; G03B42/00; G03B42/02; G03B42/028
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
160 words
In an apparatus for making a radiograph of an object submerged in a liquid, the improvement therein which comprises the combination of: a. means for providing a beam of penetrating radiation; b. means for supporting the radiation-providing means; c. means for securely positioning the means for supporting the radiation-providing means in proximity to, but spaced from the object to be radiographed, so the radiation will impinge upon a chosen section of a surface of the object; d. means for displacing the liquid from the intervening space between the radiation-providing means and said chosen section so that significant attenuation and scattering of the beam of radiation impinging upon said chosen section will not result, the radiation-providing means and support meaNs being otherwise surrounded by the liquid; e. imaging means positioned on a surface of the object so that said chosen section is between the radiation-providing means and the imaging means; and f. means for securing the imaging means to the object.
Claim 2
Dependent Claim
160 words
In an apparatus for making a radiograph of an object submerged in a liquid, the improvement therein which comprises the combination of: a. means for providing a beam of penetrating radiation; b. means for supporting the radiation-providing means; c. means for securely positioning the means for supporting the radiation-providing means in proximity to, but spaced from the object to be radiographed, so the radiation will impinge upon a chosen section of a surface of the object; d. means for displacing the liquid from the intervening space between the radiation-providing means and said chosen section so that significant attenuation and scattering of the beam of radiation impinging upon said chosen section will not result, the radiation-providing means and support meaNs being otherwise surrounded by the liquid; e. imaging means positioned on a surface of the object so that said chosen section is between the radiation-providing means and the imaging means; and f. means for securing the imaging means to the object.
Claim 3
Dependent Claim
42 words
The apparatus according to claim 1, wherein the liquid displacing means is a container enclosing a gas, the container having a wall, which contacts the entire surface of the chosen section of the object upon which the radiation impinges, and conforms thereto.
Claim 4
Dependent Claim
21 words
The apparatus of claim 2, wherein the wall which contacts the surface of the chosen section of the object is flexible.
Claim 5
Dependent Claim
12 words
The appparatus of claim 3, wherein the container is an inflatable bag.
Claim 6
Dependent Claim
32 words
The apparatus of claim 4, which comprises additionally a penetrating radiation collimating means, which is positioned between the liquid displacement means and the radiation providing means, and from which liquid is excluded.
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) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |