Patent US3201670A successfully refreshed from Google Patents.
US3201670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocating electromagnetic mechanism
Assignee: Individual
•
Filing: 1962-05-24
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Granted: 1965-08-17
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Expires: 1982-05-24
Abstract
No abstract record available.
Inventors
- 👤 Elman B Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:05
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
AN ELECTROMAGNETIC DRIVE SYSTEM COMPRISING A PAIR OF MAGNETIC CIRCUITS IN AXIAL ALIGNMENT CONSTITUTED BY A TUBULAR CASING HAVING ANNULAR FRONT AND REAR POLE PIECES ENCLOSING THE ENDS THEREOF AND AN ANNULAR POLE PIECE DISPOSED CENTRALLY THEREIN, AND A PLUNGER COAXIALLY DISPOSED WITHIN SAID CASING AND EXTENDING THROUGH SAID CENTRAL POLE PIECE, SAID PLUNGER BEING RECIPROCABLE RELATIVE TO THE FRONT AND REAR POLE PIEES, A FIRST WINDING SURROUNDING SAID PLUNER IN THE AREA BETWEEN SAID CENTER PIECE AND SAID FRONT PIECE, A SECOND WINDING SURROUNDING SAID PLUNGER IN THE AREA BETWEEN THE FRONT PIECE AND SAID REAR PIECE, EACH OF SAID WINDINGS BEING CONSTITUTED BY A
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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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |