US3074269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide range electrodynamic actuator
Assignee: Individual
•
Filing: 1959-01-30
•
Granted: 1963-01-22
•
Expires: 1979-01-30
Abstract
No abstract record available.
Inventors
- 👤 Robert J Wohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:45
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/18; G; G01; G01M; G01M7/00; G01M7/02; G01M7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
AN ELECTRODYNAMIC ACTUATOR COMPRISING A TABLE, A SUPPORT MOUNTING SAID TABLE FOR APPROXIMATELY HORIZONTAL LINEAR MOVEMENTS, MEANS RESPONSIVE TO A VARIABLE CURRENT FOR CAUSING SAID MOVEMENTS OF SAID TABLE, AND MEANS FOR PROVIDING A VARIABLE DAMPING FOR SAID TABLE INCLUDING A MAGNET ATTACHED TO AND MOVABLE WITH SAID TABLE AND HAVING ITS POLAR ENDS SPACED APART IN THE DIRECTION OF SAID LINEAR MOVEMENTS, AND A CLOSED CIRCUIT HAVING IN SERIES THEREIN A VARIABLE RESISTANCE AND A WIRE COIL CARRIED BY SAID SUPPORT AND WOUND ABOUT BUT SEPARATE FROM SAID MAGNET INTERMEDIATE OF THE ENDS THEREOF, WHEREBY THE MOVEMENT OF SAID MAGNET RELATIVE TO SAID COIL WILL EXERT A DAMPING FORCE THE EFFECTIVENESS OF WHICH MAY BE VARIED BY OPERATION OF SAID VARIABLE RESISTANCE.
Claim 2
Dependent Claim
123 words
AN ELECTRODYNAMIC ACTUATOR COMPRISING A TABLE, A SUPPORT MOUNTING SAID TABLE FOR APPROXIMATELY HORIZONTAL LINEAR MOVEMENTS, MEANS RESPONSIVE TO A VARIABLE CURRENT FOR CAUSING SAID MOVEMENTS OF SAID TABLE, AND MEANS FOR PROVIDING A VARIABLE DAMPING FOR SAID TABLE INCLUDING A MAGNET ATTACHED TO AND MOVABLE WITH SAID TABLE AND HAVING ITS POLAR ENDS SPACED APART IN THE DIRECTION OF SAID LINEAR MOVEMENTS, AND A CLOSED CIRCUIT HAVING IN SERIES THEREIN A VARIABLE RESISTANCE AND A WIRE COIL CARRIED BY SAID SUPPORT AND WOUND ABOUT BUT SEPARATE FROM SAID MAGNET INTERMEDIATE OF THE ENDS THEREOF, WHEREBY THE MOVEMENT OF SAID MAGNET RELATIVE TO SAID COIL WILL EXERT A DAMPING FORCE THE EFFECTIVENESS OF WHICH MAY BE VARIED BY OPERATION OF SAID VARIABLE RESISTANCE.
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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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |