Patent US3278871A successfully refreshed from Google Patents.
US3278871A
Expired / Lapsed
US
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Switching device having curved contacts arranged for end-on engagement
Assignee: AT&T Inc
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Filing: 1965-01-06
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Granted: 1966-10-11
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Expires: 1985-01-06
Abstract
No abstract record available.
Inventors
- 👤 George V Deverall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:41
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/29; H01H51/28; H01H51/287
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A SWITCHING DEVICE COMPRISING: A BASE; A SOURCE OF MAGNETIC FLUX; AND A PLURALITY OF CONTACT SPRINGS ARRANGED TO COOPERATE WITH EACH OTHER IN AN ELECTRICAL CROSSPOINT, SAID PLURALITY OF CONTACT SPRINGS HAVING FIXED ENDS ATTACHED TO SAID BASE, FREE ENDS ADAPTED TO RECIPROCATE ALONG A COMMON PATH, CRESCENT-SHAPED MEMBERS INTERCONNECTING SAID ENDS FOR RECIPROCATING SAID FREE ENDS IN END-ON RELATIONSHIP ALONG SAID PATH IN RESPONSE TO MAGNETIC FLUX FROM SAID SOURCE, AND CONTACT FACES ON SAID FREE ENDS FOR OPENING AND CLOSING A CROSSPOINT IN RESPONSE TO THE RECIPROCAL MOVEMENT OF SAID FREE ENDS.
Claim 2
Dependent Claim
95 words
A SWITCHING DEVICE COMPRISING: A BASE; A SOURCE OF MAGNETIC FLUX; AND A PLURALITY OF CONTACT SPRINGS ARRANGED TO COOPERATE WITH EACH OTHER IN AN ELECTRICAL CROSSPOINT, SAID PLURALITY OF CONTACT SPRINGS HAVING FIXED ENDS ATTACHED TO SAID BASE, FREE ENDS ADAPTED TO RECIPROCATE ALONG A COMMON PATH, CRESCENT-SHAPED MEMBERS INTERCONNECTING SAID ENDS FOR RECIPROCATING SAID FREE ENDS IN END-ON RELATIONSHIP ALONG SAID PATH IN RESPONSE TO MAGNETIC FLUX FROM SAID SOURCE, AND CONTACT FACES ON SAID FREE ENDS FOR OPENING AND CLOSING A CROSSPOINT IN RESPONSE TO THE RECIPROCAL MOVEMENT OF SAID FREE ENDS.
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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |