US3293431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent tracer technique for detecting defects in air permeable bodies
Assignee: Novo Industrial Corp
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Filing: 1963-12-26
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Granted: 1966-12-20
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Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Raymond G Bennett
- 👤 Willis H Risse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:13
CPC Classifications
G; G01; G01M; G01M13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A METHOD TO DETECT FLAWS IN AN AIR PERMEABLE BODY SECTION WITH OPPOSED FACES, WHICH INCLUDES THE STEPS OF CREATING A PRESSURE DIFFERENTIAL BETWEEN THE OUTSIDE AND INSIDE FACES SO AIR FLOWS THROUGH THE AIR PERMEABLE BODY SECTION, SERIALLY EXPOSING CONTIGUOUS REDUCED AREAS IN SAID OUTSIDE FACE TO SUBSTANTIALLY SCAN THE ENTIRE FACE, CARRY ING A FLUORESCENT AGENT TO SUCH OUTSIDE EXPOSED FACE BY THE AIR FLOW THROUGH THE BODY SECTION, PASSING THE FLUORESCENT AGENT THROUGH DEFECTS IN THE BODY SECTION, PART OF THE FACES AND ONTO AN ADJACENT SURFACE, AND DETECTING THE FLUORESCENT AGENT ON SAID ADJACENT SURFACE.
Claim 2
Independent Claim
99 words
A METHOD TO DETECT FLAWS IN AN AIR PERMEABLE BODY SECTION WITH OPPOSED FACES, WHICH INCLUDES THE STEPS OF CREATING A PRESSURE DIFFERENTIAL BETWEEN THE OUTSIDE AND INSIDE FACES SO AIR FLOWS THROUGH THE AIR PERMEABLE BODY SECTION, SERIALLY EXPOSING CONTIGUOUS REDUCED AREAS IN SAID OUTSIDE FACE TO SUBSTANTIALLY SCAN THE ENTIRE FACE, CARRY ING A FLUORESCENT AGENT TO SUCH OUTSIDE EXPOSED FACE BY THE AIR FLOW THROUGH THE BODY SECTION, PASSING THE FLUORESCENT AGENT THROUGH DEFECTS IN THE BODY SECTION, PART OF THE FACES AND ONTO AN ADJACENT SURFACE, AND DETECTING THE FLUORESCENT AGENT ON SAID ADJACENT SURFACE.
References Cited (Backward Citations)
GB303512A
Cited
US2157135A
Cited
US2259400A
Cited
US2844735A
Cited
US2939011A
Cited
US2999162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |