Patent US3222758A successfully refreshed from Google Patents.
US3222758A
Expired / Lapsed
US
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Method of making a switching assembly
Assignee: IXYS Integrated Circuits Division Inc
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Filing: 1962-01-31
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Granted: 1965-12-14
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Expires: 1982-01-31
Abstract
No abstract record available.
Inventors
- 👤 Richard H Marks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:51
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/28; H01H51/281; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49004; Y10T29/49105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD OF MAKING SWITCHING ASSEMBLIES USING SEALED SWITCH UNITS THAT ARE OPERATED BY THE APPLICATION OF A FIELD OF A FIRST STRENGTH AND ARE RELEASED WHEN THE APPLIED FIELD DROPS TO A SECOND STRENGTH LESS THAN SAID FIRST STRENGTH, WHICH METHOD COMPRISES THE STEPS OF DISPOSING MAGNETICALLY SATURATED PERMANENT MAGNETS OF OPPOSITE POLARITIES ADJACENT A PAIR OF THE SEALED SWITCH UNITS, AND ADJUSTING THE STRENGTHS OF THE FIELDS OF SAID PERMANENT MAGNETS TO FALL IN TNE RANGE BETWEEN SAID FIRST AND SECOND STRENGTHS AND CLOSER TO SAID FIRST STRENGTH THAN SAID SECOND STRENGTH.
Claim 2
Independent Claim
94 words
A METHOD OF MAKING SWITCHING ASSEMBLIES USING SEALED SWITCH UNITS THAT ARE OPERATED BY THE APPLICATION OF A FIELD OF A FIRST STRENGTH AND ARE RELEASED WHEN THE APPLIED FIELD DROPS TO A SECOND STRENGTH LESS THAN SAID FIRST STRENGTH, WHICH METHOD COMPRISES THE STEPS OF DISPOSING MAGNETICALLY SATURATED PERMANENT MAGNETS OF OPPOSITE POLARITIES ADJACENT A PAIR OF THE SEALED SWITCH UNITS, AND ADJUSTING THE STRENGTHS OF THE FIELDS OF SAID PERMANENT MAGNETS TO FALL IN TNE RANGE BETWEEN SAID FIRST AND SECOND STRENGTHS AND CLOSER TO SAID FIRST STRENGTH THAN SAID SECOND STRENGTH.
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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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |