Patent US2750461A successfully refreshed from Google Patents.
US2750461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for metering conductive materials
Assignee: AT&T Inc
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Filing: 1953-06-01
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Granted: 1956-06-12
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Expires: 1973-06-01
Abstract
No abstract record available.
Inventors
- 👤 Tillman T Bunch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:54
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/02; G01B7/04; G01B7/042; G01B7/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
APPARATUS FOR METERING ELECTRICALLY CONDUCTIVE MATERIALS, WHICH COMPRISES A PAIR OF POLE PIECES HAVING OPPOSED, SPACED, ANNULAR POLE FACES, MEANS FOR ROTATABLY SUPPORTING THE POLE PIECES FOR ROTATION FREELY ABOUT A COMMON AXIS CONCENTRIC WITH RESPECT TO THE ANNULAR POLE FACES, A SOURCE OF MAGNETOMOTIVE FORCE FOR PRODUCING A MAGNETIC FLUX WITHIN SAID POLE PIECES TO CREATE AN ANNULAR MAGNETIC FIELD ACROSS THE AIR GAP BETWEEN THE POLE FACES, MEANS FOR GUIDING A MOVING ELECTRICALLY CONDUCTIVE MATERIAL ALONG A FIXED PATH BETWEEN THE POLE FACES SUBSTANTIALLY PERPENDICULAR TO THE MAGNETIC FIELD AND AT A FIXED DISTANCE FROM THE AXIS OF ROTATION OF THE POLE PIECES, SAID MAGNETIC FIELD REACTING WITH EDDY CURRENTS INDUCED IN THE MOVING ELECTRICALLY CONDUCTIVE MATERIAL TO CAUSE ANGULAR DISPLACEMENT OF THE POLE PIECES ABOUT THEIR AXIS OF ROTATION, EDDY CURRENT DAMPING MEANS TENDING TO RESIST SAID ANGULAR DISPLACEMENT OF THE POLE PIECES, AND MEANS ROTATABLE WITH ONE OF THE POLE PIECES FOR INDICATING THE DEGREE OF ANGULAR DISPLACEMENT THEREOF.
Claim 2
Dependent Claim
163 words
APPARATUS FOR METERING ELECTRICALLY CONDUCTIVE MATERIALS, WHICH COMPRISES A PAIR OF POLE PIECES HAVING OPPOSED, SPACED, ANNULAR POLE FACES, MEANS FOR ROTATABLY SUPPORTING THE POLE PIECES FOR ROTATION FREELY ABOUT A COMMON AXIS CONCENTRIC WITH RESPECT TO THE ANNULAR POLE FACES, A SOURCE OF MAGNETOMOTIVE FORCE FOR PRODUCING A MAGNETIC FLUX WITHIN SAID POLE PIECES TO CREATE AN ANNULAR MAGNETIC FIELD ACROSS THE AIR GAP BETWEEN THE POLE FACES, MEANS FOR GUIDING A MOVING ELECTRICALLY CONDUCTIVE MATERIAL ALONG A FIXED PATH BETWEEN THE POLE FACES SUBSTANTIALLY PERPENDICULAR TO THE MAGNETIC FIELD AND AT A FIXED DISTANCE FROM THE AXIS OF ROTATION OF THE POLE PIECES, SAID MAGNETIC FIELD REACTING WITH EDDY CURRENTS INDUCED IN THE MOVING ELECTRICALLY CONDUCTIVE MATERIAL TO CAUSE ANGULAR DISPLACEMENT OF THE POLE PIECES ABOUT THEIR AXIS OF ROTATION, EDDY CURRENT DAMPING MEANS TENDING TO RESIST SAID ANGULAR DISPLACEMENT OF THE POLE PIECES, AND MEANS ROTATABLE WITH ONE OF THE POLE PIECES FOR INDICATING THE DEGREE OF ANGULAR DISPLACEMENT THEREOF.
References Cited (Backward Citations)
US1309390A
Cited
US2596349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |