Patent US3311818A successfully refreshed from Google Patents.
US3311818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-contact apparatus for magnetically measuring strain
Assignee: API Instruments Co
•
Filing: 1963-03-11
•
Granted: 1967-03-28
•
Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 George F Quittner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:11
CPC Classifications
B; B21; B21B; B21B38/00; B21B38/02; G; G01; G01B; G01B7/00; G01B7/34; G01B7/345; G01L; G01L1/00; G01L1/12; G01L1/125; G01L1/127; Y; Y10; Y10S; Y10S73/00; Y10S73/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
APPARATUS FOR NON-CONTACT ASCERTAINING OF SUBSTANTIALLY UNIDIMENSION DIRECTION STRAIN IN A MAGNETIC OR EDDY CURRENT CONDUCTIVE SAMPLE HAVING TWO OPPOSITE SIDES, SAID APPARATUS COMPRISING: FIRST MEANS WHICH INCLUDES A CORE AND COIL ARRANGEMENT LOCATED ADJACENT A FIRST OF SAID SAMPLE SIDES AND FOR ELECTROMAGNETICALLY LINKING WITH AT LEAST A PORTION OF SAID SAMPLE AND FOR PRODUCING A FLUX WHICH EXTENDS THERETHROUGH SUBSTANTIALLY IN A FIRST DIRECTION, SECOND MEANS WHICH INCLUDES A COIL LOCATED ADJACENT THE SECOND OF SAID SAMPLE SIDES AND ALIGNED IN SAID FIRST DIRECTION FOR ELECTROMAGNETICALLY SENSING MAGNETIC FLUX CHARACTERISTIC IN SAID SAMPLE AS CAUSED BY SAID FIRST MEANS, THIRD MEANS WHICH INCLUDES A CORE AND COIL ARRANGEMENT LOCATED ADJACENT ONE OF SAID TWO SAMPLE SIDES AND FOR ELECTROMAGNETICALLY LINKING WITH AT LEAST A PORTION OF SAID SAMPLE AND FOR PRODUCING A FLUX WHICH EXTENDS THERETHROUGH IN A SECOND DIRECTION WHICH IS TRANSVERSE TO SAID FIRST DIRECTION, FOURTH MEANS WHICH INCLUDES A COIL LOCATED ON THE OTHER OF THE TWO SAMPLE SIDES AND ALIGNED IN SAID SECOND DIRECTION FOR ELECTROMAGNETICALLY SENSING MAGNETIC FLUX CHARACTERISTIC IN SAMPLE AS CAUSED BY SAID THIRD MEANS, MEANS FOR COMPARING THE OUTPUT OF THE SECOND MEANS WITH THAT OF THE FOURTH MEANS, AND MEANS FOR READING OUT SAID COMPARISON.
Claim 2
Dependent Claim
206 words
APPARATUS FOR NON-CONTACT ASCERTAINING OF SUBSTANTIALLY UNIDIMENSION DIRECTION STRAIN IN A MAGNETIC OR EDDY CURRENT CONDUCTIVE SAMPLE HAVING TWO OPPOSITE SIDES, SAID APPARATUS COMPRISING: FIRST MEANS WHICH INCLUDES A CORE AND COIL ARRANGEMENT LOCATED ADJACENT A FIRST OF SAID SAMPLE SIDES AND FOR ELECTROMAGNETICALLY LINKING WITH AT LEAST A PORTION OF SAID SAMPLE AND FOR PRODUCING A FLUX WHICH EXTENDS THERETHROUGH SUBSTANTIALLY IN A FIRST DIRECTION, SECOND MEANS WHICH INCLUDES A COIL LOCATED ADJACENT THE SECOND OF SAID SAMPLE SIDES AND ALIGNED IN SAID FIRST DIRECTION FOR ELECTROMAGNETICALLY SENSING MAGNETIC FLUX CHARACTERISTIC IN SAID SAMPLE AS CAUSED BY SAID FIRST MEANS, THIRD MEANS WHICH INCLUDES A CORE AND COIL ARRANGEMENT LOCATED ADJACENT ONE OF SAID TWO SAMPLE SIDES AND FOR ELECTROMAGNETICALLY LINKING WITH AT LEAST A PORTION OF SAID SAMPLE AND FOR PRODUCING A FLUX WHICH EXTENDS THERETHROUGH IN A SECOND DIRECTION WHICH IS TRANSVERSE TO SAID FIRST DIRECTION, FOURTH MEANS WHICH INCLUDES A COIL LOCATED ON THE OTHER OF THE TWO SAMPLE SIDES AND ALIGNED IN SAID SECOND DIRECTION FOR ELECTROMAGNETICALLY SENSING MAGNETIC FLUX CHARACTERISTIC IN SAMPLE AS CAUSED BY SAID THIRD MEANS, MEANS FOR COMPARING THE OUTPUT OF THE SECOND MEANS WITH THAT OF THE FOURTH MEANS, AND MEANS FOR READING OUT SAID COMPARISON.
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) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |