US3358276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination record-playback and erase magnetic head
Assignee: Individual
•
Filing: 1963-11-01
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Granted: 1967-12-12
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Expires: 1983-11-01
Abstract
No abstract record available.
Inventors
- 👤 Paul H Schulte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:31
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A COMBINATION ERASE AND RECORD-PLAYBACK MAGNETIC HEAD COMPRISING AN ERASE HEAD HAVING SIDE BY SIDE EXTERNAL BOSSES IN PRECISE ALINEMENT WITH EACH GAP THEREOF; A RECORD-PLAYBACK HEAD HAVING SLOTTED RECESSES IN SIDE BY SIDE RELATION AT LEAST PARTIALLY CONFORMING IN CONFIGURATION PRECISELY TO SAID BOSSES; SAID BOSSES INCLUDING SHOULDERS AND SAID RECESSES INCLUDING EDGES FOR ABUTMENT THEREWITH TO POSITION THE ERASE HEAD WITH ITS FACE SLIGHTLY BELOW THAT OF THE RECORD-PLAYBACK HEAD; THE FACE OF THE ERASE HEAD BEING FINISHED OFF ARCUATELY ALONG A RADIUS OFFSET FROM THE CENTER LINE OF THE ERASE HEAD BY A FEW THOUSANDS OF AN INCH TO PERMIT TAPE TO WRAP ABOUT THE OPERATIVE FACES OF THE HEADS COMPRISING SAID COMBINATION HEAD; AND MEANS FOR SECURING THE HEADS TOGETHER WITH THE BOSSES MATED IN THE RECESSES.
Claim 2
Dependent Claim
131 words
A COMBINATION ERASE AND RECORD-PLAYBACK MAGNETIC HEAD COMPRISING AN ERASE HEAD HAVING SIDE BY SIDE EXTERNAL BOSSES IN PRECISE ALINEMENT WITH EACH GAP THEREOF; A RECORD-PLAYBACK HEAD HAVING SLOTTED RECESSES IN SIDE BY SIDE RELATION AT LEAST PARTIALLY CONFORMING IN CONFIGURATION PRECISELY TO SAID BOSSES; SAID BOSSES INCLUDING SHOULDERS AND SAID RECESSES INCLUDING EDGES FOR ABUTMENT THEREWITH TO POSITION THE ERASE HEAD WITH ITS FACE SLIGHTLY BELOW THAT OF THE RECORD-PLAYBACK HEAD; THE FACE OF THE ERASE HEAD BEING FINISHED OFF ARCUATELY ALONG A RADIUS OFFSET FROM THE CENTER LINE OF THE ERASE HEAD BY A FEW THOUSANDS OF AN INCH TO PERMIT TAPE TO WRAP ABOUT THE OPERATIVE FACES OF THE HEADS COMPRISING SAID COMBINATION HEAD; AND MEANS FOR SECURING THE HEADS TOGETHER WITH THE BOSSES MATED IN THE RECESSES.
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) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |