US3312372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secret coded card system
Assignee: Veeder Industries Inc
•
Filing: 1964-05-28
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Granted: 1967-04-04
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Expires: 1984-05-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Irving B Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:42
CPC Classifications
G; G06; G06Q; G06Q20/00; G06Q20/30; G06Q20/34; G06Q20/342; G06K; G06K7/00; G06K7/08; G06K7/082; G06K7/087; G07; G07F; G07F7/00; G07F7/02; G07F7/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A CODED CARD READER HAVING AN A.C. POWER SUPPLY AND INCLUDING AN E-CORE TRANSFORMER HAVING A CENTER LEG AND A PAIR OF OUTER LEGS FOR PROVIDING TWO MAGNETIC FLUX PATHS INCLUDING THE CENTER LEG IN COMMON, A FLUX SENSING COIL ON SAID CENTER LEG AND EXCITATION WINDINGS FOR PRODUCING EQUAL FLUX IN EACH OF THE MAGNETIC FLUX PATHS, SAID FLUX BEING OPPOSITELY DIRECTED IN THE CENTER LEG OF THE TRANSFORMER, AND A SECOND TRANSFORMER ENERGIZED BY SAID POWER SUPPLY IN PARALLEL WITH THE E-CORE TRANSFORMER, SAID SECOND TRANSFORMER HAVING A SECONDARY WINDING TO PRODUCE SIGNALS RESPONSIVE TO THE PHASE VARIATIONS OF THE POWER SUPPLY TO PROVIDE A REFERENCE FOR THE POLARITY OF ANY SIGNAL PRODUCED BY SAID SENSING COIL UPON THE DISTORTION OF THE FLUX IN ONE OF THE MAGNETIC FLUX PATHS RELATIVE TO THE OTHER.
Claim 2
Dependent Claim
136 words
A CODED CARD READER HAVING AN A.C. POWER SUPPLY AND INCLUDING AN E-CORE TRANSFORMER HAVING A CENTER LEG AND A PAIR OF OUTER LEGS FOR PROVIDING TWO MAGNETIC FLUX PATHS INCLUDING THE CENTER LEG IN COMMON, A FLUX SENSING COIL ON SAID CENTER LEG AND EXCITATION WINDINGS FOR PRODUCING EQUAL FLUX IN EACH OF THE MAGNETIC FLUX PATHS, SAID FLUX BEING OPPOSITELY DIRECTED IN THE CENTER LEG OF THE TRANSFORMER, AND A SECOND TRANSFORMER ENERGIZED BY SAID POWER SUPPLY IN PARALLEL WITH THE E-CORE TRANSFORMER, SAID SECOND TRANSFORMER HAVING A SECONDARY WINDING TO PRODUCE SIGNALS RESPONSIVE TO THE PHASE VARIATIONS OF THE POWER SUPPLY TO PROVIDE A REFERENCE FOR THE POLARITY OF ANY SIGNAL PRODUCED BY SAID SENSING COIL UPON THE DISTORTION OF THE FLUX IN ONE OF THE MAGNETIC FLUX PATHS RELATIVE TO THE OTHER.
References Cited (Backward Citations)
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US2792148A
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US3087598A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |