US3293377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for reducing tape friction in a video tape recorder
Assignee: US Philips Corp
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Filing: 1963-04-08
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Granted: 1966-12-20
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Expires: 1983-04-08
Abstract
No abstract record available.
Inventors
- 👤 Backers Franciscus Theodorus
- 👤 Wessels Johannes Hendrik
- 👤 Lips Theodoor Maria Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:05
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A DEVICE FOR MAGNETICALLY RECORDING AND REPRODUCING SIGNALS ON A TAPE, COMPRISING: A STATIONARY CYLINDRICAL DRUM HAVING A CHAMBER AND A CYLINDRICAL PERIPHERY, A PORTION OF SAID PERIPHERY BEING ADAPTED TO BE TRAVERSED BY A MOVING MAGNETIC TAPE, A RAPIDLY ROTATING DISC LOCATED IN SAID CHAMBER, SAID DISC BEING CONCENTRIC WITH SAID DRUM. A MAGNETIC HEAD LOCATED ON THE CIRCUMFERENCE OF SAID DISC, SAID HEAD MAGNETICALLY CO-ACTING WITH SAID TAPE, AND AT LEAST ONE SLOT IN THE PERIPHERY OF SAID DRUM, SAID
Claim 2
Independent Claim
82 words
A DEVICE FOR MAGNETICALLY RECORDING AND REPRODUCING SIGNALS ON A TAPE, COMPRISING: A STATIONARY CYLINDRICAL DRUM HAVING A CHAMBER AND A CYLINDRICAL PERIPHERY, A PORTION OF SAID PERIPHERY BEING ADAPTED TO BE TRAVERSED BY A MOVING MAGNETIC TAPE, A RAPIDLY ROTATING DISC LOCATED IN SAID CHAMBER, SAID DISC BEING CONCENTRIC WITH SAID DRUM. A MAGNETIC HEAD LOCATED ON THE CIRCUMFERENCE OF SAID DISC, SAID HEAD MAGNETICALLY CO-ACTING WITH SAID TAPE, AND AT LEAST ONE SLOT IN THE PERIPHERY OF SAID DRUM, SAID
References Cited (Backward Citations)
US2998495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |