Patent US3190990A successfully refreshed from Google Patents.
US3190990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosive actuated switch
Assignee: Allis Chalmers Corp
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Filing: 1961-10-16
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Granted: 1965-06-22
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Expires: 1981-10-16
Abstract
No abstract record available.
Inventors
- 👤 Elijah R Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:07
CPC Classifications
H; H01; H01H; H01H39/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A HIGH SPEED ELECTRICAL GROUND SWITCH, COMPRISING: A STATIONARY SWITCH CONTACT ASSEMBLY INCLUDING A PAIR OF CONTACT PLATES FORMING THE JAWS OF A STATIONARY CONTACT WITH A V-SHAPED SLOT FORMED BETWEEN SAID PLATES AT ONE END OF SAID PLATES AND WITH A PORTION OF SAID PLATES EXTENDING SUBSTANTIALLY PARALLEL FROM SAID SLOT TOWARD THE OTHER END OF SAID PLATES, AND A RESILIENT STOP MEMBER POSITIONED ADJACENT THE END OF THE PARALLEL PORTIONS OF SAID PLATES; RESILIENT BACKUP MEANS FOR SAID CONTACT PLATES; A MOVABLE SWITCH CONTACT ASSEMBLY INCLUDING A CONTACT BLADE ATTACHED TO ONE END OF A TUBULAR ROD WHOSE OTHER END IS MOUNTED FOR ROTATION ON A SUPPORT MEMBER BETWEEN A FIRST POSITION WHERE SAID CONTACT BLADE IS REMOTE FROM SAID STATIONARY CONTACT PLATES AND A SECOND POSITION WHERE SAID BLADE ENGAGES SAID JAWS OF SAID CONTACT; AN INSULATOR STACK INCLUDING A PLURALITY OF INSULATING
Claim 2
Dependent Claim
146 words
A HIGH SPEED ELECTRICAL GROUND SWITCH, COMPRISING: A STATIONARY SWITCH CONTACT ASSEMBLY INCLUDING A PAIR OF CONTACT PLATES FORMING THE JAWS OF A STATIONARY CONTACT WITH A V-SHAPED SLOT FORMED BETWEEN SAID PLATES AT ONE END OF SAID PLATES AND WITH A PORTION OF SAID PLATES EXTENDING SUBSTANTIALLY PARALLEL FROM SAID SLOT TOWARD THE OTHER END OF SAID PLATES, AND A RESILIENT STOP MEMBER POSITIONED ADJACENT THE END OF THE PARALLEL PORTIONS OF SAID PLATES; RESILIENT BACKUP MEANS FOR SAID CONTACT PLATES; A MOVABLE SWITCH CONTACT ASSEMBLY INCLUDING A CONTACT BLADE ATTACHED TO ONE END OF A TUBULAR ROD WHOSE OTHER END IS MOUNTED FOR ROTATION ON A SUPPORT MEMBER BETWEEN A FIRST POSITION WHERE SAID CONTACT BLADE IS REMOTE FROM SAID STATIONARY CONTACT PLATES AND A SECOND POSITION WHERE SAID BLADE ENGAGES SAID JAWS OF SAID CONTACT; AN INSULATOR STACK INCLUDING A PLURALITY OF INSULATING
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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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |