Patent US3277236A successfully refreshed from Google Patents.
US3277236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary speed and phase control having synchronous drive motor rotated by control motor
Assignee: Individual
•
Filing: 1963-02-11
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Granted: 1966-10-04
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Expires: 1983-02-11
Abstract
No abstract record available.
Inventors
- 👤 Kurt R Machein
- 👤 Uwe W Reese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:28
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/46; H02P5/52
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
IN A CONTROL SYSTEM, A ROTATABLE MEMBER, A SYNCHRONOUS MOTOR HAVING A ROTATABLE HOUSING AND A ROTATABLE ARMATURE CONNECTED TO SAID ROTATABLE MEMBER TO CONTINUOUSLY ROTATE THE SAME, A MAGNETIC HEAD SECURED TO THE ROTATABLE MEMBER, A MAGNETIC TAPE MOVABLE PAST THE HEAD IN A MANNER WHEREBY THE HEAD SWEEPS DIAGONALLY ACROSS THE TAPE, POSITIONING PULSE GENERATING POSITIONCIATED WITH THE ROTATABLE MEMBER AND GENERATING POSITIONING PULSES AT A FREQUENCY DEPENDENT UPON THE SPEED OF ROTATION OF THE ROTATABLE MEMBER, A SOURCE OF RECURRENT REFERENCE PULSES, MEANS GENERATING A GENERALLY SAWTOOTH WAVE, MEANS SYNCHRONIZING THE GENERALLY SAWTOOTH WITH THE SAID REFERENCE PULSES, A STORAGE CIRCUIT, A GATING CIRCUIT FOR COUPLING THE GENERALLY SAWTOOTH WAVE TO THE
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |