Patent US3344374A successfully refreshed from Google Patents.
US3344374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic vibrator having an improved contact support
Assignee: AT&T Inc
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Filing: 1966-06-13
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Granted: 1967-09-26
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Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Samuel D White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:16
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/64; H01H50/74; H01H50/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN A FREQUENCY RESPONSIVE SWITCHING DEVICE INCLUDING FIRST AND SECOND CONTACT MEMBERS ARRANGED TO COOPERATE WITH EACH OTHER TO OPEN AND CLOSE AN ELECTRICAL CONNECTION, VIBRATING MEANS FOR SUPPORTING SAID FIRST CONTACT AND FOR MOVING SAID FIRST CONTACT IN RESPONSE TO A SELECTED FREQUENCY, AND AN ADJUSTING MEANS FOR POSITIONING SAID SECOND CONTACT WITH RESPECT TO SAID FIRST CONTACT, THE IMPROVEMENT COMPRISING AN E-SHAPED SUPPORT MOUNTED ON SAID ADJUSTING MEANS FOR HOLDING SAID SECOND CONTACT IN POSITION WITH RESPECT TO SAID FIRST CONTACT.
Claim 2
Dependent Claim
83 words
IN A FREQUENCY RESPONSIVE SWITCHING DEVICE INCLUDING FIRST AND SECOND CONTACT MEMBERS ARRANGED TO COOPERATE WITH EACH OTHER TO OPEN AND CLOSE AN ELECTRICAL CONNECTION, VIBRATING MEANS FOR SUPPORTING SAID FIRST CONTACT AND FOR MOVING SAID FIRST CONTACT IN RESPONSE TO A SELECTED FREQUENCY, AND AN ADJUSTING MEANS FOR POSITIONING SAID SECOND CONTACT WITH RESPECT TO SAID FIRST CONTACT, THE IMPROVEMENT COMPRISING AN E-SHAPED SUPPORT MOUNTED ON SAID ADJUSTING MEANS FOR HOLDING SAID SECOND CONTACT IN POSITION WITH RESPECT TO SAID FIRST CONTACT.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |