US2636076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic capacitor
Assignee: Sprague Electric Co
•
Filing: 1950-09-13
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Granted: 1953-04-21
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Expires: 1970-09-13
Abstract
No abstract record available.
Inventors
- 👤 Ness Odvar
- 👤 Kermit N Lambert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:03
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
AN ELECTROLYTIC CAPACITOR WHICH COMPRISES A WOUND CAPACITANCE SECTION, AN ELECTROLYTE, AN HERMETICALLY SEALED HOUSING ENCASING SAID CAPACITOR SECTION AND SAID ELECTROLYTE, ELECTRICAL TERMINAL LEADS OF OPPOSITE POLARITY EXTENDING FROM SAID CAPACITANCE SECTION THROUGH SAID HOUSING, SAID LEADS BEING INSULATED FROM SAID HOUSING, ONE OF SAID TERMINAL LEADS BEING COMPOSED OF TWO SECTIONS OF A METAL SELECTED FROM THE CLASS CONSISTING OF ALUMINUM AND TANTALUM, THE ADJACENT PORTIONS OF SAID TWO SECTIONS BEING FORMED WITH SHORT LENGTHS OF WIRE BENT AT RIGHT ANGLES TO THE MAIN DIRECTION OF SAID WIRES, SAID SHORT LENGTHS BEING COATED WITH A METAL WHICH IS READILY WETTED BY AN ALLOY OF TWO OR MORE METALS SELECTED FROM THE CLASS CONSISTING OF LEAD, BISMUTH, CADMIUM TIN, OR INDIUM, SAID BENT LENGTHS BEING ENCASED IN A BLOCK OF AN ALLOY OF TWO OR MORE METALS SELECTED FROM THE CLASS CONSISTING OF LEAD, BISMUTH, CADMIUM, TIN, OR INDIUM, SAID ALLOY HAVING A MELTING POINT BETWEEN ABOUT 90 AND 160* C. AND BEING INERT TO DETERIORATION IN THE PRESENCE OF SAID ELECTROLYTE, SAID ELECTROLYTE BEING CAPABLE OF THE GENERATION OF GASES AT A RATE WHICH WOULD BREAK SAID HOUSING AT TEMPERATURES GREATER THAN ABOUT 160* C.
Claim 2
Dependent Claim
197 words
AN ELECTROLYTIC CAPACITOR WHICH COMPRISES A WOUND CAPACITANCE SECTION, AN ELECTROLYTE, AN HERMETICALLY SEALED HOUSING ENCASING SAID CAPACITOR SECTION AND SAID ELECTROLYTE, ELECTRICAL TERMINAL LEADS OF OPPOSITE POLARITY EXTENDING FROM SAID CAPACITANCE SECTION THROUGH SAID HOUSING, SAID LEADS BEING INSULATED FROM SAID HOUSING, ONE OF SAID TERMINAL LEADS BEING COMPOSED OF TWO SECTIONS OF A METAL SELECTED FROM THE CLASS CONSISTING OF ALUMINUM AND TANTALUM, THE ADJACENT PORTIONS OF SAID TWO SECTIONS BEING FORMED WITH SHORT LENGTHS OF WIRE BENT AT RIGHT ANGLES TO THE MAIN DIRECTION OF SAID WIRES, SAID SHORT LENGTHS BEING COATED WITH A METAL WHICH IS READILY WETTED BY AN ALLOY OF TWO OR MORE METALS SELECTED FROM THE CLASS CONSISTING OF LEAD, BISMUTH, CADMIUM TIN, OR INDIUM, SAID BENT LENGTHS BEING ENCASED IN A BLOCK OF AN ALLOY OF TWO OR MORE METALS SELECTED FROM THE CLASS CONSISTING OF LEAD, BISMUTH, CADMIUM, TIN, OR INDIUM, SAID ALLOY HAVING A MELTING POINT BETWEEN ABOUT 90 AND 160* C. AND BEING INERT TO DETERIORATION IN THE PRESENCE OF SAID ELECTROLYTE, SAID ELECTROLYTE BEING CAPABLE OF THE GENERATION OF GASES AT A RATE WHICH WOULD BREAK SAID HOUSING AT TEMPERATURES GREATER THAN ABOUT 160* C.
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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) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |