Patent US3431528A successfully refreshed from Google Patents.
US3431528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
All-metal seal and thermal switch
Assignee: United States Department of the Army
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Filing: 1954-06-04
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Granted: 1969-03-04
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Expires: 1974-06-04
Abstract
No abstract record available.
Inventors
- 👤 Eugene D Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:41
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/50; H01M50/572; H01M50/574; H01M50/581; H01H; H01H37/00; H01H37/74; H01H37/76; H01M6/00; H01M6/30; H01M6/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A THERMAL BATTERY, A HERMETIC SEAL-SWITCH HAVING CONTACT MEANS, AN ACTUATING MEMBER FOR ENGAGING SAID CONTACT MEANS TO MAINTAIN THE BATTERY HERMETICALLY MEMBER AND IN SHORT CIRCUIT CONDITION, SAID ACTUATING MEMBER COMPRISING A DISHED FLEXIBLE SNAP DISC PROVIDED WITH A PERFORATION CENTRALLY THEREOF, SAID DISC BEING INITIALLY FLEXED INWARDLY BUT ADAPTED TO FLEX OUTWARDLY TO REMOVE SAID SHORT CIRCUIT FROM THE BATTERY, AND SUPPORTING MEANS FOR SAID DISH-SHAPED MEMBER.
Claim 2
Dependent Claim
70 words
IN A THERMAL BATTERY, A HERMETIC SEAL-SWITCH HAVING CONTACT MEANS, AN ACTUATING MEMBER FOR ENGAGING SAID CONTACT MEANS TO MAINTAIN THE BATTERY HERMETICALLY MEMBER AND IN SHORT CIRCUIT CONDITION, SAID ACTUATING MEMBER COMPRISING A DISHED FLEXIBLE SNAP DISC PROVIDED WITH A PERFORATION CENTRALLY THEREOF, SAID DISC BEING INITIALLY FLEXED INWARDLY BUT ADAPTED TO FLEX OUTWARDLY TO REMOVE SAID SHORT CIRCUIT FROM THE BATTERY, AND SUPPORTING MEANS FOR SAID DISH-SHAPED MEMBER.
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) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |