US3389355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple coil solenoid
Assignee: FRED SCHROEDER JR
•
Filing: 1964-06-05
•
Granted: 1968-06-18
•
Expires: 1984-06-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Fred Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:41
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1607
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A SOLENOID ASSEMBLY COMPRISING A MAGNETIC METALLIC CORE, A DIRECT SUCCESSION OF A PLURALITY OF COAXIAL INDEPENDENTLY CONDUCTIVE COILS SURROUNDING SAID CORE, CONNECTOR MEANS FOR SIMULTANEOUSLY ELECTRICALLY ENERGIZING ALL OF SAID COILS AND EACH INDEPENDENTLY OF THE OTHERS, SAID CONNECTOR MEANS COMPRISING SEPARATE CONDUCTORS EXTENDING FROM COMMON TERMINALS AT ONE END OF THE CORE TO CONNECTIONS WITH EACH OF THE COILS, AND A MAGNETIC METALLIC PLUNGER WITHIN THE ELECTROMAGNETIC FIELD OF SAID CORE AND COILS AND DISPLACEABLE AXIALLY THEREOF IN RESPONSE TO ENERGIZATION OF ALL OR LESS THAN ALL OF SAID COILS.
Claim 2
Dependent Claim
92 words
A SOLENOID ASSEMBLY COMPRISING A MAGNETIC METALLIC CORE, A DIRECT SUCCESSION OF A PLURALITY OF COAXIAL INDEPENDENTLY CONDUCTIVE COILS SURROUNDING SAID CORE, CONNECTOR MEANS FOR SIMULTANEOUSLY ELECTRICALLY ENERGIZING ALL OF SAID COILS AND EACH INDEPENDENTLY OF THE OTHERS, SAID CONNECTOR MEANS COMPRISING SEPARATE CONDUCTORS EXTENDING FROM COMMON TERMINALS AT ONE END OF THE CORE TO CONNECTIONS WITH EACH OF THE COILS, AND A MAGNETIC METALLIC PLUNGER WITHIN THE ELECTROMAGNETIC FIELD OF SAID CORE AND COILS AND DISPLACEABLE AXIALLY THEREOF IN RESPONSE TO ENERGIZATION OF ALL OR LESS THAN ALL OF SAID COILS.
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) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |