US3345008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape reel servo
Assignee: RCA Corp
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Filing: 1965-10-20
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Granted: 1967-10-03
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Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 George V Jacoby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:01
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/56; G11B15/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A TAPE REEL SERVO ARRANGEMENT FOR A MAGNETIC TAPE SYSTEM WHICH INCLUDES A SOURCE OF COMMAND SIGNAL ENERGY, TAPE REEL MEANS UPON WHICH A MAGNETIC TAPE IS WOUND, A REEL MOTOR MEANS COUPLED TO DRIVE SAID REEL MEANS, A CAPSTAN MEANS FOR DRIVING SAID TAPE, SAID TAPE REEL SERVO ARRANGEMENT COMPRISING, A TACHOMETER GENERATOR MEANS COUPLED TO SAID REEL MOTOR MEANS FOR DEVELOPING RATE DAMPING SIGNAL ENERGY, FIRST CIRCUIT MEANS INCLUDING A NONLINEAR ATTENUATOR FOR ATTENUATING SAID RATE DAMPING SIGNAL, THE IMPEDANCE OF THE ATTENUATOR VARYING AS A FUNCTION OF THE RATE DAMPING SIGNAL AMPLITUDE SUCH THAT THE IMPEDANCE DECREASES AS THE RATE DAMPING SIGNAL AMPLITUDE INCREASES, AND
Claim 2
Dependent Claim
108 words
A TAPE REEL SERVO ARRANGEMENT FOR A MAGNETIC TAPE SYSTEM WHICH INCLUDES A SOURCE OF COMMAND SIGNAL ENERGY, TAPE REEL MEANS UPON WHICH A MAGNETIC TAPE IS WOUND, A REEL MOTOR MEANS COUPLED TO DRIVE SAID REEL MEANS, A CAPSTAN MEANS FOR DRIVING SAID TAPE, SAID TAPE REEL SERVO ARRANGEMENT COMPRISING, A TACHOMETER GENERATOR MEANS COUPLED TO SAID REEL MOTOR MEANS FOR DEVELOPING RATE DAMPING SIGNAL ENERGY, FIRST CIRCUIT MEANS INCLUDING A NONLINEAR ATTENUATOR FOR ATTENUATING SAID RATE DAMPING SIGNAL, THE IMPEDANCE OF THE ATTENUATOR VARYING AS A FUNCTION OF THE RATE DAMPING SIGNAL AMPLITUDE SUCH THAT THE IMPEDANCE DECREASES AS THE RATE DAMPING SIGNAL AMPLITUDE INCREASES, AND
References Cited (Backward Citations)
US3250480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |