Patent US3247329A successfully refreshed from Google Patents.
US3247329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for stabilizing contact between a magnetic head and a magnetic tape
Assignee: Victor Company of Japan Ltd
•
Filing: 1962-06-04
•
Granted: 1966-04-19
•
Expires: 1982-06-04
Abstract
No abstract record available.
Inventors
- 👤 Tomita Yoshio
- 👤 Wada Yoshiyo
- 👤 Nishiwaki Yoshiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:25
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/62; G11B15/64; G11B15/61; G11B5/00; G11B5/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A TAPE SYSTEM INCLUDING A DEVICE FOR STABILIZING CONTACT OF A MAGNETIC HEAD WITH THE MAGNETIC TAPE COMPRISING A ROTARY BODY BEING FREELY ROTATABLE IN FIXED GUIDE DRUM MEANS HAVING AN OUTER PERIPHERAL EDGE FOR GUIDING THE TAPE, SAID ROTARY BODY HAVING AN OUTER DIAMETER WHICH IS SMALLER THAN THAT OF SAID GUIDE DRUM MEANS, A MAGNETIC HEAD BEING MOUNTED ON THE PERIPHERAL EDGE OF SAID ROTARY BODY AND AN OUTER TIP OF SAID MAGNETIC HEAD ELEVATED TO SUBSTANTIALLY THE OUTER PERIPHERAL EDGE OF SAID GUIDE DRUM MEANS SO AS TO CONTACT SAID TAPE WHICH IS GUIDED BY SAID GUIDE DRUM MEANS, AND GUIDE MEANS MOUNTED ON THE OUTER PERIPHERAL EDGE OF SAID ROTARY BODY ARRANGED NEAR THE TIP OF SAID MAGNETIC HEAD IN A ROTARY DIRECTION OF SAID ROTARY BODY, END PORTIONS OF SAID GUIDE MEANS BEING ELEVATED TO SUBSTANTIALLY THE OUTER PERIPHERAL EDGE OF SAID GUIDE DRUM MEANS SO AS TO CONTACT SAID TAPE AND SAID END PORTIONS BEING SPACED ON OPPOSITE SIDES FROM SAID TIP AND ALIGNED THEREWITH TO MAINTAIN THE PORTION OF THE TAPE THEREBETWEEN SUBSTANTIALLY STRAIGHT.
Claim 2
Dependent Claim
181 words
A TAPE SYSTEM INCLUDING A DEVICE FOR STABILIZING CONTACT OF A MAGNETIC HEAD WITH THE MAGNETIC TAPE COMPRISING A ROTARY BODY BEING FREELY ROTATABLE IN FIXED GUIDE DRUM MEANS HAVING AN OUTER PERIPHERAL EDGE FOR GUIDING THE TAPE, SAID ROTARY BODY HAVING AN OUTER DIAMETER WHICH IS SMALLER THAN THAT OF SAID GUIDE DRUM MEANS, A MAGNETIC HEAD BEING MOUNTED ON THE PERIPHERAL EDGE OF SAID ROTARY BODY AND AN OUTER TIP OF SAID MAGNETIC HEAD ELEVATED TO SUBSTANTIALLY THE OUTER PERIPHERAL EDGE OF SAID GUIDE DRUM MEANS SO AS TO CONTACT SAID TAPE WHICH IS GUIDED BY SAID GUIDE DRUM MEANS, AND GUIDE MEANS MOUNTED ON THE OUTER PERIPHERAL EDGE OF SAID ROTARY BODY ARRANGED NEAR THE TIP OF SAID MAGNETIC HEAD IN A ROTARY DIRECTION OF SAID ROTARY BODY, END PORTIONS OF SAID GUIDE MEANS BEING ELEVATED TO SUBSTANTIALLY THE OUTER PERIPHERAL EDGE OF SAID GUIDE DRUM MEANS SO AS TO CONTACT SAID TAPE AND SAID END PORTIONS BEING SPACED ON OPPOSITE SIDES FROM SAID TIP AND ALIGNED THEREWITH TO MAINTAIN THE PORTION OF THE TAPE THEREBETWEEN SUBSTANTIALLY STRAIGHT.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |