Patent US3202771A successfully refreshed from Google Patents.
US3202771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slip contacting device for rotary magnetic heads in a magnetic recording and reproducing equipment
Assignee: Victor Company of Japan Ltd
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Filing: 1962-01-03
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Granted: 1965-08-24
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Expires: 1982-01-03
Abstract
No abstract record available.
Inventors
- 👤 Wada Yoshiyo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:07
CPC Classifications
H; H01; H01R; H01R39/00; G; G11; G11B; G11B15/00; G11B15/02; G11B15/12; G11B15/14; G11B5/00; G11B5/48; G11B5/52; G11B5/53
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
IN A ROTARY MAGNETIC HEAD ASSEMBLY FOR A TELEVISION VIDEO SIGNAL MAGNETIC RECORDING AND REPRODUCING APPARATUS WHEREIN, WHILE A DESIRED TELEVISION VIDEO SIGNAL IS BEING RECORDED WITH AT LEAST ONE RECORDING ROTARY MAGNETIC HEAD, THE RECORDED SIGNAL IS MONITORED OR REPRODUCED BY SCANNING THE MAGNETIC MEDIUM WITH AT LEAST ONE MONITOR REPRODUCING ROTARY MAGNETIC HEAD FIXED TO A ROTARY DISK, A SLIP CONTACTING DEVICE COMPRISING A SHIELDING METALLIC TUBE FIXED TO SAID ROTARY DISK; SLIP-RINGS FITTED THROUGH INSULATING TUBES IN THE UPPER AND LOWER PRTS OF SAID TUBE; LEAD WIRES CONNECTING SAID MONITOR REPRODUCING ROTARY MAGNETIC HEAD AND SLIP RINGS IN ONE OF THE PARTS OF SAID TUBE; LEAD WIRES CONNECTING SAID RECORDING ROTARY MAGNETIC HEAD AND SAID SLIP-RINGS IN THE OTHER PART OF SAID TUBE; STATIONARY SHIELDING CASES SHIELDING THE UPPER AND LOWER SLIP-RINGS FROM EACH OTHERAND A GROUNDING BRUSH COMING INTO CONTACT WITH SAID METALLIC TUBE NEAR THE CENTRAL POINT AND ALSO WITH SAID STATIONARY SHIELDING CASES, SAID METALLIC TUBE BEING OF A MULTIPLEX STRUCTURE AND HAVING A PLURALITY OF SHIELDING PASSAGES SO THAT SAID LEAD WIRES FROM THE RESPECTIVE MAGNETIC HEADS MAY PASS THROUGH THE RESPECTIVE SHIELDING PASSAGES.
Claim 2
Dependent Claim
191 words
IN A ROTARY MAGNETIC HEAD ASSEMBLY FOR A TELEVISION VIDEO SIGNAL MAGNETIC RECORDING AND REPRODUCING APPARATUS WHEREIN, WHILE A DESIRED TELEVISION VIDEO SIGNAL IS BEING RECORDED WITH AT LEAST ONE RECORDING ROTARY MAGNETIC HEAD, THE RECORDED SIGNAL IS MONITORED OR REPRODUCED BY SCANNING THE MAGNETIC MEDIUM WITH AT LEAST ONE MONITOR REPRODUCING ROTARY MAGNETIC HEAD FIXED TO A ROTARY DISK, A SLIP CONTACTING DEVICE COMPRISING A SHIELDING METALLIC TUBE FIXED TO SAID ROTARY DISK; SLIP-RINGS FITTED THROUGH INSULATING TUBES IN THE UPPER AND LOWER PRTS OF SAID TUBE; LEAD WIRES CONNECTING SAID MONITOR REPRODUCING ROTARY MAGNETIC HEAD AND SLIP RINGS IN ONE OF THE PARTS OF SAID TUBE; LEAD WIRES CONNECTING SAID RECORDING ROTARY MAGNETIC HEAD AND SAID SLIP-RINGS IN THE OTHER PART OF SAID TUBE; STATIONARY SHIELDING CASES SHIELDING THE UPPER AND LOWER SLIP-RINGS FROM EACH OTHERAND A GROUNDING BRUSH COMING INTO CONTACT WITH SAID METALLIC TUBE NEAR THE CENTRAL POINT AND ALSO WITH SAID STATIONARY SHIELDING CASES, SAID METALLIC TUBE BEING OF A MULTIPLEX STRUCTURE AND HAVING A PLURALITY OF SHIELDING PASSAGES SO THAT SAID LEAD WIRES FROM THE RESPECTIVE MAGNETIC HEADS MAY PASS THROUGH THE RESPECTIVE SHIELDING PASSAGES.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |