US3089061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal generator
Assignee: EIDP Inc
•
Filing: 1959-06-19
•
Granted: 1963-05-07
•
Expires: 1979-06-19
Abstract
No abstract record available.
Inventors
- 👤 Nieuweboer Gerrit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:41
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/02; H02P25/10; H02P25/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN A SYSTEM FOR REGULATING THE SPEED OF A ROTARY DEVICE: A WHEEL COUPLED TO SAID DEVICE FOR ROTATION THEREWITH; A STRIP OF MAGNETICALLY RECEPTIVE MATERIAL ATTACHED TO THE PERIPHERY OF SAID WHEEL; A MAGNETIC HEAD SITUATED IN CLOSE PROXIMITY TO SAID STRIP; FIRST AND SECOND REFERENCE SIGNAL SOURCES; A CIRCUIT COUPLED TO THE DEVICE FOR APPLYING A SPEED CORRECTION THERETO; AND SWITCH MEANS FOR SELECTIVELY COUPLING THE HEAD TO SAID FIRST SOURCE FOR IMPRESSING THE SIGNAL THEREFROM ON SAID STRIP AND TO SAID CIRCUIT FOR ANALYSIS OF THE IMPRESSED SIGNAL, SAID SWITCH MEANS THEREBY FACILITATING RECORDING OF SAID FIRST REFERENCE SIGNAL ON SAID STRIP EACH TIME THE SET SPEED OF SAID DEVICE IS CHANGED, SAID CIRCUIT INCLUDING COMPONENTS FOR MIXING THE SIGNALS FROM SAID HEAD AND SAID SECOND SOURCE TO PRODUCE A BEAT FREQUENCY AND FOR RESONATING SAID BEAT FREQUENCY AGAINST A SELECTED LOW FREQUENCY.
Claim 2
Dependent Claim
146 words
IN A SYSTEM FOR REGULATING THE SPEED OF A ROTARY DEVICE: A WHEEL COUPLED TO SAID DEVICE FOR ROTATION THEREWITH; A STRIP OF MAGNETICALLY RECEPTIVE MATERIAL ATTACHED TO THE PERIPHERY OF SAID WHEEL; A MAGNETIC HEAD SITUATED IN CLOSE PROXIMITY TO SAID STRIP; FIRST AND SECOND REFERENCE SIGNAL SOURCES; A CIRCUIT COUPLED TO THE DEVICE FOR APPLYING A SPEED CORRECTION THERETO; AND SWITCH MEANS FOR SELECTIVELY COUPLING THE HEAD TO SAID FIRST SOURCE FOR IMPRESSING THE SIGNAL THEREFROM ON SAID STRIP AND TO SAID CIRCUIT FOR ANALYSIS OF THE IMPRESSED SIGNAL, SAID SWITCH MEANS THEREBY FACILITATING RECORDING OF SAID FIRST REFERENCE SIGNAL ON SAID STRIP EACH TIME THE SET SPEED OF SAID DEVICE IS CHANGED, SAID CIRCUIT INCLUDING COMPONENTS FOR MIXING THE SIGNALS FROM SAID HEAD AND SAID SECOND SOURCE TO PRODUCE A BEAT FREQUENCY AND FOR RESONATING SAID BEAT FREQUENCY AGAINST A SELECTED LOW FREQUENCY.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |