Patent US3170044A successfully refreshed from Google Patents.
US3170044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of magnetic records
Assignee: Individual
•
Filing: 1959-10-05
•
Granted: 1965-02-16
•
Expires: 1979-10-05
Abstract
No abstract record available.
Inventors
- 👤 Groak Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:11
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/74; G11B5/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
APPARATUS FOR RAPIDLY MAKING A DUPLICATE OF A MAGNECTIC RECORD HAVING A CONTINUOUS RECORD OF INFORMATION DIVIDED INTO A PLURALITY OF PARALLEL ARRANGED COMPONENT TRACKS PRESENTING SAID INFORMATION IN SEQUENCE THROUGH SAID TRACKS COMPRISING, IN COMBINATION, ROTATBLE MEANS FOR SUPPORTING SAID MAGNETIC RECORD IN A LOOP AND FOR MOVING SAID MAGNETIC RECORD AROUND A LOOP PATH, A FIRST SET OF TRANSDUCER HEADS DISPOSED IN FIXED POSITION ACROSS SAID PATH FOR COOPERATION WITH SAID MAGNETIC RECORD, A LINEAR BED FOR SUPPORTING A MAGNETIC RECORDING MEDIUM, A CARRIAGE MOVABLE PARALLEL TO SAID BED, A SECOND SET OF TRANSDUCER HEADS CARRIED BY THE CARRIAGE IN SPACED APART RELATIONSHIP ACROSS THE WIDTH OF THE BED OF COOPERATION WITH SAID RECORDING MEDIUM, A PLURALITY OF AMPLIFIERS EACH HAVING AN INPUT AND AN OUTPUT, LEADS CONNECTING SAID FIRST TRANSDUCER HEADS TO THE INPUTS, RESPECTIVELY, OF SAID AMPLIFIERS, FURTHER LEADS CONNECTING SAID OUTPUTS OF SAID AMPLIFIERS TO SAID SECOND TRANSDUCER HEADS, RESPECTIVELY, AND MOTOR MEANS FOR SO DRIVING SAID LOOP AROUND SAID LOOPED PATHS AND FOR SO DRIVING SAID CARRIAGE BACKWARDS AND FORWARDS THAT SAID FIRST TRANSDUCER HEADS SCAN SAID MAGNETIC RECORD AND SAID SECOND TRANSDUCER HEADS LAY DOWN PARALLEL MAGNETIC TRACKS CORRESPONDING TO AND DUPLICATING SAID COMPONENT TRACKS OF THE MAGNETIC RECORD.
Claim 2
Dependent Claim
206 words
APPARATUS FOR RAPIDLY MAKING A DUPLICATE OF A MAGNECTIC RECORD HAVING A CONTINUOUS RECORD OF INFORMATION DIVIDED INTO A PLURALITY OF PARALLEL ARRANGED COMPONENT TRACKS PRESENTING SAID INFORMATION IN SEQUENCE THROUGH SAID TRACKS COMPRISING, IN COMBINATION, ROTATBLE MEANS FOR SUPPORTING SAID MAGNETIC RECORD IN A LOOP AND FOR MOVING SAID MAGNETIC RECORD AROUND A LOOP PATH, A FIRST SET OF TRANSDUCER HEADS DISPOSED IN FIXED POSITION ACROSS SAID PATH FOR COOPERATION WITH SAID MAGNETIC RECORD, A LINEAR BED FOR SUPPORTING A MAGNETIC RECORDING MEDIUM, A CARRIAGE MOVABLE PARALLEL TO SAID BED, A SECOND SET OF TRANSDUCER HEADS CARRIED BY THE CARRIAGE IN SPACED APART RELATIONSHIP ACROSS THE WIDTH OF THE BED OF COOPERATION WITH SAID RECORDING MEDIUM, A PLURALITY OF AMPLIFIERS EACH HAVING AN INPUT AND AN OUTPUT, LEADS CONNECTING SAID FIRST TRANSDUCER HEADS TO THE INPUTS, RESPECTIVELY, OF SAID AMPLIFIERS, FURTHER LEADS CONNECTING SAID OUTPUTS OF SAID AMPLIFIERS TO SAID SECOND TRANSDUCER HEADS, RESPECTIVELY, AND MOTOR MEANS FOR SO DRIVING SAID LOOP AROUND SAID LOOPED PATHS AND FOR SO DRIVING SAID CARRIAGE BACKWARDS AND FORWARDS THAT SAID FIRST TRANSDUCER HEADS SCAN SAID MAGNETIC RECORD AND SAID SECOND TRANSDUCER HEADS LAY DOWN PARALLEL MAGNETIC TRACKS CORRESPONDING TO AND DUPLICATING SAID COMPONENT TRACKS OF THE MAGNETIC RECORD.
References Cited (Backward Citations)
US2109627A
Cited
US2604549A
Cited
US2698359A
Cited
US2768049A
Cited
US2777901A
Cited
US2797101A
Cited
US2986609A
Cited
US2976372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |