Patent US3315863A successfully refreshed from Google Patents.
US3235671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic head support
Assignee: Individual
•
Filing: 1962-02-01
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Granted: 1966-02-15
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Expires: 1982-02-01
Abstract
No abstract record available.
Inventors
- 👤 Louis M Rich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:15
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A MAGNETIC RECORDER COMPRISING A ROTATING MEMBER HAVING A MAGNETIC RECORDING SURFACE, FRAME MEANS FOR ROTATABLY SUPPORTING THE MEMBER, AT LEAST ONE MAGNETIC HEAD, AND MEANS SUPPORTING THE HEAD FOR MOVEMENT OF THE HEAD TOWARD AND INTO CONTACT WITH THE MAGNETIC RECORDING SURFACE, SAID SUPPORTING MEANS INCLUDING A PISTON, A MOVABLE SLEEVE SURROUNDING THE PISTON, SAID FRAME MEANS HAVING A CYLINDRICAL BORE CLOSED AT ONE END FOR RECEIVING THE PISTON AND SLEEVE, THE HEAD BEING SECURED TO THE PISTON, SPRING MEANS EXTENDING BETWEEN THE PISTON
Claim 2
Dependent Claim
85 words
A MAGNETIC RECORDER COMPRISING A ROTATING MEMBER HAVING A MAGNETIC RECORDING SURFACE, FRAME MEANS FOR ROTATABLY SUPPORTING THE MEMBER, AT LEAST ONE MAGNETIC HEAD, AND MEANS SUPPORTING THE HEAD FOR MOVEMENT OF THE HEAD TOWARD AND INTO CONTACT WITH THE MAGNETIC RECORDING SURFACE, SAID SUPPORTING MEANS INCLUDING A PISTON, A MOVABLE SLEEVE SURROUNDING THE PISTON, SAID FRAME MEANS HAVING A CYLINDRICAL BORE CLOSED AT ONE END FOR RECEIVING THE PISTON AND SLEEVE, THE HEAD BEING SECURED TO THE PISTON, SPRING MEANS EXTENDING BETWEEN THE PISTON
References Cited (Backward Citations)
US2776144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |