US3265964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic inspection of iron castings
Assignee: Dayton Malleable Iron Co
•
Filing: 1961-09-14
•
Granted: 1966-08-09
•
Expires: 1981-09-14
Abstract
No abstract record available.
Inventors
- 👤 Oral K Hunsaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:51
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
IN NON-DESTRUCTIVE TESTING AND INSPECTION APPARATUS OF THE CHARACTER DESCRIBED FOR TESTING AND INSPECTING THE ACCEPTABILITY OF FERROUS CASTINGS BY TESTING THE MAGNETIC PERMEABILITY OF A PORTION ONLY OF EACH SAID CASTING, THE COMBINATION WHICH COMPRISES AN ELECTROMAGNETIC INSPECTION HEAD CONFIGURED FOR INTERFITTING RELATION WITH SAID CASTINGS FOR SUPPORTING SAID CASTING DURING TESTING AND FOR CONTACT THEREWITH TO INDUCE THEREIN A DIRECTED ELECTROMAGNETIC FLUX PATH, A MAGNETIZING COIL WINDING AROUND AT LEAST A PORTION OF SAID HEAD FOR ESTABLISHING THEREWITH AN ELECTROMAGNETIC FIELD FOR INDUCING SAID DIRECTED FLUX PATH INTO SAID CASING WHEN IN CONTACT WITH SAID HEAD, SAID COIL WINDING BEING CONFIGURED TO CONFORM TO SAID PORTION OF SAID CASING TO BE TESTED, A MAGNETIC MEASURING COIL FOR DETECTING THE QUANTITY OF MAGNETIC INDUCTION INDUCED INTO EACH SAID CASTING IN CONTACT WITH SAID HEAD AND WITHIN SAID MAGNETIC FIELD ESTABLISHED BY SAID MAGNETIZING COIL, AND INDICATING MEANS FOR INDICATING SAID QUANTITY OF MAGNETIC INDUCTION DETECTED BY SAID COIL AND THE ACCEPTABILITY OR UNACCEPTABILITY OF EACH OF SAID MASS PRODUCED CASTINGS.
Claim 2
Dependent Claim
171 words
IN NON-DESTRUCTIVE TESTING AND INSPECTION APPARATUS OF THE CHARACTER DESCRIBED FOR TESTING AND INSPECTING THE ACCEPTABILITY OF FERROUS CASTINGS BY TESTING THE MAGNETIC PERMEABILITY OF A PORTION ONLY OF EACH SAID CASTING, THE COMBINATION WHICH COMPRISES AN ELECTROMAGNETIC INSPECTION HEAD CONFIGURED FOR INTERFITTING RELATION WITH SAID CASTINGS FOR SUPPORTING SAID CASTING DURING TESTING AND FOR CONTACT THEREWITH TO INDUCE THEREIN A DIRECTED ELECTROMAGNETIC FLUX PATH, A MAGNETIZING COIL WINDING AROUND AT LEAST A PORTION OF SAID HEAD FOR ESTABLISHING THEREWITH AN ELECTROMAGNETIC FIELD FOR INDUCING SAID DIRECTED FLUX PATH INTO SAID CASING WHEN IN CONTACT WITH SAID HEAD, SAID COIL WINDING BEING CONFIGURED TO CONFORM TO SAID PORTION OF SAID CASING TO BE TESTED, A MAGNETIC MEASURING COIL FOR DETECTING THE QUANTITY OF MAGNETIC INDUCTION INDUCED INTO EACH SAID CASTING IN CONTACT WITH SAID HEAD AND WITHIN SAID MAGNETIC FIELD ESTABLISHED BY SAID MAGNETIZING COIL, AND INDICATING MEANS FOR INDICATING SAID QUANTITY OF MAGNETIC INDUCTION DETECTED BY SAID COIL AND THE ACCEPTABILITY OR UNACCEPTABILITY OF EACH OF SAID MASS PRODUCED CASTINGS.
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |