Patent US3231842A successfully refreshed from Google Patents.
US3231842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic devices
Assignee: General Dynamics Corp
•
Filing: 1962-11-30
•
Granted: 1966-01-25
•
Expires: 1982-11-30
Abstract
No abstract record available.
Inventors
- 👤 David F Brower
- 👤 Gamon B Hayward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:01
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/14; H; H01; H01F; H01F7/00; H01F7/06; H01F7/20; H01F7/202
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
AN ELECTROMAGNETIC DEVICE WHICH COMPRISES AN INSULATED MULTI-TURN PRIMARY WINDING INCLUDING A SPIRAL WRAPPED STRIP OF CONDUCTIVE MATERIAL WITH SPACED REGIONS BEING DEFINED BETWEEN SUCCESSIVE SPIRAL TURNS, A SECONDARY WINDING INCLUDING A PLURALITY OF ELONGATED CONDUCTIVE STRIPS, SAID CONDUCTIVE STRIPS BEING INTERLEAVED BETWEEN SUCCESSIVE SPIRALED TURNS OF SAID PRIMARY WINDING AND LONGITUDINALLY SPACED FROM EACH OTHER WITH THE RESPECTIVE ENDS THEREOF BEING APPROXIMATELY IN RADIAL ALIGNMENT, AND MEANS ELECTRICALLY CONNECTING THE RESPECTIVE ALIGNED ENDS TOGETHER SO THAT SAID STRIPS ARE ELECTRICALLY CONNECTED IN PARALLEL RELATION WHEREBY A CUMULATIVE HIGH CURRENT IS PRODUCED IN SAID SECONDARY WINDING AS A RESULT OF THE SUMMATION OF THE INDIVIDUAL COMPONENTS OF CURRENT INDUCED IN SAID CONDUCTIVE STRIPS.
Claim 2
Dependent Claim
113 words
AN ELECTROMAGNETIC DEVICE WHICH COMPRISES AN INSULATED MULTI-TURN PRIMARY WINDING INCLUDING A SPIRAL WRAPPED STRIP OF CONDUCTIVE MATERIAL WITH SPACED REGIONS BEING DEFINED BETWEEN SUCCESSIVE SPIRAL TURNS, A SECONDARY WINDING INCLUDING A PLURALITY OF ELONGATED CONDUCTIVE STRIPS, SAID CONDUCTIVE STRIPS BEING INTERLEAVED BETWEEN SUCCESSIVE SPIRALED TURNS OF SAID PRIMARY WINDING AND LONGITUDINALLY SPACED FROM EACH OTHER WITH THE RESPECTIVE ENDS THEREOF BEING APPROXIMATELY IN RADIAL ALIGNMENT, AND MEANS ELECTRICALLY CONNECTING THE RESPECTIVE ALIGNED ENDS TOGETHER SO THAT SAID STRIPS ARE ELECTRICALLY CONNECTED IN PARALLEL RELATION WHEREBY A CUMULATIVE HIGH CURRENT IS PRODUCED IN SAID SECONDARY WINDING AS A RESULT OF THE SUMMATION OF THE INDIVIDUAL COMPONENTS OF CURRENT INDUCED IN SAID CONDUCTIVE STRIPS.
References Cited (Backward Citations)
US2599182A
Cited
US2655623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |