Patent US3158796A successfully refreshed from Google Patents.
US3158796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical actuators
Assignee: Individual
•
Filing: 1962-11-23
•
Granted: 1964-11-24
•
Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
- 👤 Daniel D Musgrave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:27
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/14; H01F7/145; H01F7/121; H01F7/124
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
AN ELECTROMAGNETIC ACTUATOR COMPRISING: A COIL ADAPTED FOR PRODUCING AN ELECTROMAGNETIC FIELD; A CORE POSITIONED WITHIN SAID COIL; ACTUATING MEANS NORMALLY RETAINED AT AN INOPERATIVE POSITION AND MOVABLE TO AN OPERATIVE POSITION; FIRST MOVABLE MAGNETIC MEANS OPERATIVELY CONNECTED TO SAID ACTUATING MEANS AND NORMALLY MAGNETICALLY ATTRACTED TO SAID CORE; SECOND MOVABLE MAGNETIC MEANS OPERATIVELY CONNECTED TO SAID ACTUATING MEANS AND NORMALLY REPELLED FROM SAID FIRST MOVABLE MAGNETIC MEANS TO A FIRST POSITION; DETENT MEANS ENGAGING SAID SECOND MOVABLE MAGNETIC MEANS THEREBY RETAINING SAID ACTUATING MEANS AT SAID INOPERATIVE POSITION; MEANS FOR MOUNTING SAID COIL, SAID CORE, SAID ACTUATING MEANS AND SAID DETENT MEANS; AND MEANS FOR APPLYING AN ELECTRIC CURRENT ALTERNATELY IN OPPOSITE DIRECTIONS TO SAID COIL; WHEREBY UPON A CURRENT PULSE IN ONE DIRECTION BEING IMPRESSED ON SAID COIL SAID SECOND MOVABLE MAGNETIC MEANS IS ATTRACTED TO SAID CORE AND MOVED TO A SECOND POSITION WHEREAT SAID SECOND MOVABLE MAGNETIC MEANS IS DISENGAGED FROM SAID DETENT MEANS; AND WHEREBY UPON A SUBSEQUENT CURRENT PULSE IN AN OPPOSITE DIRECTION BEING IMPRESSED ON SAID COIL SAID FIRST AND SECOND MOVABLE MAGNETIC MEANS ARE REPELLED FROM SAID CORE THEREBY MOVING SAID ACTUATING MEANS FROM SAID INOPERATIVE POSITION TO SAID OPERATIVE POSITION.
Claim 2
Dependent Claim
199 words
AN ELECTROMAGNETIC ACTUATOR COMPRISING: A COIL ADAPTED FOR PRODUCING AN ELECTROMAGNETIC FIELD; A CORE POSITIONED WITHIN SAID COIL; ACTUATING MEANS NORMALLY RETAINED AT AN INOPERATIVE POSITION AND MOVABLE TO AN OPERATIVE POSITION; FIRST MOVABLE MAGNETIC MEANS OPERATIVELY CONNECTED TO SAID ACTUATING MEANS AND NORMALLY MAGNETICALLY ATTRACTED TO SAID CORE; SECOND MOVABLE MAGNETIC MEANS OPERATIVELY CONNECTED TO SAID ACTUATING MEANS AND NORMALLY REPELLED FROM SAID FIRST MOVABLE MAGNETIC MEANS TO A FIRST POSITION; DETENT MEANS ENGAGING SAID SECOND MOVABLE MAGNETIC MEANS THEREBY RETAINING SAID ACTUATING MEANS AT SAID INOPERATIVE POSITION; MEANS FOR MOUNTING SAID COIL, SAID CORE, SAID ACTUATING MEANS AND SAID DETENT MEANS; AND MEANS FOR APPLYING AN ELECTRIC CURRENT ALTERNATELY IN OPPOSITE DIRECTIONS TO SAID COIL; WHEREBY UPON A CURRENT PULSE IN ONE DIRECTION BEING IMPRESSED ON SAID COIL SAID SECOND MOVABLE MAGNETIC MEANS IS ATTRACTED TO SAID CORE AND MOVED TO A SECOND POSITION WHEREAT SAID SECOND MOVABLE MAGNETIC MEANS IS DISENGAGED FROM SAID DETENT MEANS; AND WHEREBY UPON A SUBSEQUENT CURRENT PULSE IN AN OPPOSITE DIRECTION BEING IMPRESSED ON SAID COIL SAID FIRST AND SECOND MOVABLE MAGNETIC MEANS ARE REPELLED FROM SAID CORE THEREBY MOVING SAID ACTUATING MEANS FROM SAID INOPERATIVE POSITION TO SAID OPERATIVE POSITION.
References Cited (Backward Citations)
US3026456A
Cited
US3039010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |