Patent US3268714A successfully refreshed from Google Patents.
US3268714A
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Bidirectional polarized electromagnetic counter
Assignee: METRODYNAMICS CORP
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Filing: 1965-08-19
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Granted: 1966-08-23
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Expires: 1985-08-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Nathaniel B Wales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:04
CPC Classifications
G; G06; G06M; G06M3/00; G06M3/14; G06M1/00; G06M1/08; G06M1/10; G06M1/102; G06M1/104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A BIDIRECTIONAL COUNTER COMPRISING: AN ELECTROMAGNET; A PERMANENT MAGNET LOCATED IN THE LEAKAGE FIELD OF SAID ELECTROMAGNET WHEN ENERGIZED; A REGISTER MEMBER; MEANS TO DRIVE SAID REGISTER MEMBER IN INCREMENTAL DISPLACEMENT BY ENERGY SUPPLIED BY SAID ELECTROMAGNET; AND MEANS RESPONSIVE TO THE INTERACTION OF SAID PERMANENT MAGNETIC AND SAID LEAKAGE FIELD TO SELECT THE DIRECTION OF SAID REGISTER DISPLACEMENT.
Claim 2
Dependent Claim
59 words
A BIDIRECTIONAL COUNTER COMPRISING: AN ELECTROMAGNET; A PERMANENT MAGNET LOCATED IN THE LEAKAGE FIELD OF SAID ELECTROMAGNET WHEN ENERGIZED; A REGISTER MEMBER; MEANS TO DRIVE SAID REGISTER MEMBER IN INCREMENTAL DISPLACEMENT BY ENERGY SUPPLIED BY SAID ELECTROMAGNET; AND MEANS RESPONSIVE TO THE INTERACTION OF SAID PERMANENT MAGNETIC AND SAID LEAKAGE FIELD TO SELECT THE DIRECTION OF SAID REGISTER DISPLACEMENT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |