US3142789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bidirectional positioning device
Assignee: Individual
•
Filing: 1960-07-13
•
Granted: 1964-07-28
•
Expires: 1980-07-13
Abstract
No abstract record available.
Inventors
- 👤 Chester R Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:06
CPC Classifications
H; H02; H02K; H02K37/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN A DEVICE HAVING AN ARMATURE AND A MAGNETIC STRUCTURE INTERNAL THERETO FOR ROTATION OF SAID ARMATURE BY MAGNETIC FORCE TO A TERMINAL AMPLITUDE, FIRST MEANS FOR INCREASING THE TORQUE UPON SAID ARMATURE AT SAID TERMINAL AMPLITUDE COMPRISING, PLURAL SECOND MEANS DISPOSED UPON SAID MAGNETIC STRUCTURE FOR PROVIDING MAGNETIC FORCE, THIRD MEANS TO ENERGIZE A SECOND MEANS, AND FOURTH MEANS MECHANICALLY RELATED TO SAID ARMATURE TO ENERGIZE AN ADDITIONAL SAID SECOND MEANS UPON ROTATION OF SAID ARMATURE SUBSTANTIALLY HALF OF SAID TERMINAL AMPLITUDE OF ROTATION.
Claim 2
Dependent Claim
85 words
IN A DEVICE HAVING AN ARMATURE AND A MAGNETIC STRUCTURE INTERNAL THERETO FOR ROTATION OF SAID ARMATURE BY MAGNETIC FORCE TO A TERMINAL AMPLITUDE, FIRST MEANS FOR INCREASING THE TORQUE UPON SAID ARMATURE AT SAID TERMINAL AMPLITUDE COMPRISING, PLURAL SECOND MEANS DISPOSED UPON SAID MAGNETIC STRUCTURE FOR PROVIDING MAGNETIC FORCE, THIRD MEANS TO ENERGIZE A SECOND MEANS, AND FOURTH MEANS MECHANICALLY RELATED TO SAID ARMATURE TO ENERGIZE AN ADDITIONAL SAID SECOND MEANS UPON ROTATION OF SAID ARMATURE SUBSTANTIALLY HALF OF SAID TERMINAL AMPLITUDE OF ROTATION.
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) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |