US3209099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally responsive permanent magnet operated switch
Assignee: Lanteris Space LLC
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Filing: 1962-08-16
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Granted: 1965-09-28
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Expires: 1982-08-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Elmer W Zearfoss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:08
CPC Classifications
H; H01; H01H; H01H29/00; H01H29/18; H01H37/00; H01H37/02; H01H37/32; H01H37/58
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
THERMOPLASTIC SWITCH FOR THE CONTROL OF A REGION SUCH AS A REFRIGERATOR CHAMBER, SAID SWITCH COMPRISING: A FIRST RING STRUCTURE, PERMANENTLY MAGNETIZED WITH AXIALLY SPACED MAGNETIC POLES; A SECOND RING STRUCTURE, MAGNETIZABLE AND DEMAGBETIZABLE IN RESPONSE TO CHANGING TEMPERATURES IN SAID REGION, THE SECOND RING STRUCTURE BEING COAXIAL WITH THE FIRST; A THIRD STDUCTURE PROVIDING A CENTRAL IRON CORE, MOVABLE AXIALLY OF SAID FIRST AND SECOND RING STRUCTURES; AND AN ELECTRIC CIRUIT CONTROL MEMBER MOVABLE ON MOVEMENT OF SAID CORE TO OPEN AND CLOSE THE SWITCH.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |