US3333065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for reducing frictional wear of a transducing head against a magnetic tape
Assignee: Ampex Corp
•
Filing: 1963-07-25
•
Granted: 1967-07-25
•
Expires: 1983-07-25
Abstract
No abstract record available.
Inventors
- 👤 Steven J Torok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:29
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/04; G11B5/00; G11B5/48; G11B5/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A MAGNETIC TAPE TRANSPORT HAVING AN ERASE HEAD AND A RECORD SYSTEM BOTH OPERABLE DURING THE RECORD MODE OF SAID TRANSPORT, THE COMBINATION COMPRISING: MEANS FOR BRINGING SAID TAPE AND ERASE HEAD INTO ERASING ENGAGEMENT AND FOR MUTUALLY RETRACTING SAID TAPE AND ERASE HEAD FROM SUCH ENGAGEMENT; AND MEANS COUPLED BETWEEN SAID FIRST-NAMED MEANS AND SAID RECORD SYSTEM FOR OPERATION OF SAID FIRST-NAMED MEANS TO EFFECT SAID ERASING ENGAGEMENT ONLY DURING THE RECORD MODE OF OPERATION OF SAID TRANSPORT, AND TO EFFECT MUTUAL RETRACTION OF S AID ERASE HEAD AND TAPE DURING OTHER MODES OF OPERATION OF SAID TRANSPORT; SAID LAST-NAMED MEANS BEING ARRANGED TO EFFECT SAID OPERATION OF SAID FIRST-NAMED MEANS A PREDETERMINED TIME DELAY AFTER THE INITIATION OF AT LEAST SAID RECORD MODE OF SAID MACHINE TO PROVIDE REDUCED FRICTIONAL WEAR OF SAID TAPE.
Claim 2
Dependent Claim
137 words
IN A MAGNETIC TAPE TRANSPORT HAVING AN ERASE HEAD AND A RECORD SYSTEM BOTH OPERABLE DURING THE RECORD MODE OF SAID TRANSPORT, THE COMBINATION COMPRISING: MEANS FOR BRINGING SAID TAPE AND ERASE HEAD INTO ERASING ENGAGEMENT AND FOR MUTUALLY RETRACTING SAID TAPE AND ERASE HEAD FROM SUCH ENGAGEMENT; AND MEANS COUPLED BETWEEN SAID FIRST-NAMED MEANS AND SAID RECORD SYSTEM FOR OPERATION OF SAID FIRST-NAMED MEANS TO EFFECT SAID ERASING ENGAGEMENT ONLY DURING THE RECORD MODE OF OPERATION OF SAID TRANSPORT, AND TO EFFECT MUTUAL RETRACTION OF S AID ERASE HEAD AND TAPE DURING OTHER MODES OF OPERATION OF SAID TRANSPORT; SAID LAST-NAMED MEANS BEING ARRANGED TO EFFECT SAID OPERATION OF SAID FIRST-NAMED MEANS A PREDETERMINED TIME DELAY AFTER THE INITIATION OF AT LEAST SAID RECORD MODE OF SAID MACHINE TO PROVIDE REDUCED FRICTIONAL WEAR OF SAID TAPE.
References Cited (Backward Citations)
US2535498A
Cited
US3185484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |