US3240893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snap action electric stack switch with adjustable damper connected to its leaf springs
Assignee: F and F Enterprises Inc
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Filing: 1963-06-18
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Granted: 1966-03-15
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Expires: 1983-06-18
Abstract
No abstract record available.
Inventors
- 👤 Guy M Farrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:47
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/50; H01H5/00; H01H5/04; H01H5/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A SNAP ACTION SWITCH COMPRISING A PAIR OF SPACED APART CANTILEVER SPRINGS, AN INSULATING SUPPORT FOR MOUNTING ONE END OF EACH OF SAID SPRINGS, AN INTERMEDIATE CANTILEVER SPRING HAVING ONE END MOUNTED IN SAID SUPPORT AND BEING LOCATED BETWEEN SAID PAIR OF SPRINGS, A FIRST CONTACT CARRIED BY SAID INTERMEDIATE SPRING AND ADDITIONAL CONTACTS CARRIED BY EACH OF SAID PAIR OF SPRINGS WITH SAID FIRST CONTACT ALTERNATELY ENGAGING ONE OF SAID ADDITIONAL CONTACTS, AN ACTUATOR MEMBER FORMED OF INSULATING MATERIAL AND CONNECTED TO THE OPPOSITE ENDS OF SAID PAIR OF SPRINGS, A PRESSURE MEMBER HAVING ONE END PIVOTALLY CONNECTED TO THE OPPOSITE END OF SAID INTERMEDIATE SPRINGS, AND MEANS PIVOTALLY CONNECTING THE OTHER END OF SAID PRESSURE MEMBER TO SAID ACTUATOR MEMBER.
Claim 2
Dependent Claim
122 words
A SNAP ACTION SWITCH COMPRISING A PAIR OF SPACED APART CANTILEVER SPRINGS, AN INSULATING SUPPORT FOR MOUNTING ONE END OF EACH OF SAID SPRINGS, AN INTERMEDIATE CANTILEVER SPRING HAVING ONE END MOUNTED IN SAID SUPPORT AND BEING LOCATED BETWEEN SAID PAIR OF SPRINGS, A FIRST CONTACT CARRIED BY SAID INTERMEDIATE SPRING AND ADDITIONAL CONTACTS CARRIED BY EACH OF SAID PAIR OF SPRINGS WITH SAID FIRST CONTACT ALTERNATELY ENGAGING ONE OF SAID ADDITIONAL CONTACTS, AN ACTUATOR MEMBER FORMED OF INSULATING MATERIAL AND CONNECTED TO THE OPPOSITE ENDS OF SAID PAIR OF SPRINGS, A PRESSURE MEMBER HAVING ONE END PIVOTALLY CONNECTED TO THE OPPOSITE END OF SAID INTERMEDIATE SPRINGS, AND MEANS PIVOTALLY CONNECTING THE OTHER END OF SAID PRESSURE MEMBER TO SAID ACTUATOR MEMBER.
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |