US3237030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio noise-free switch
Assignee: Dynamic Controls HS Inc
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Filing: 1962-09-28
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Granted: 1966-02-22
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Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 Richard J Coburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:49
CPC Classifications
H; H04; H04B; H04B15/00; H04B15/02; H01; H01H; H01H9/00; H01H9/54; H01H9/541; H01H9/542; H01H9/56; H03; H03K; H03K17/00; H03K17/13; H03K17/136
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
FOR USE IN A POWER LINE BETWEEN A SOURCE OF ELECTRICAL ENERGY OF VARYING POTENTIAL AND A LOAD, A SWITCH COMPRISING A MAIN SWITCHING MEANS IN THE POWER LINE, SELECTIVELY OPERABLE MEANS FOR OPENING AND CLOSING SAID MAIN SWITCHING MEANS, AN AUXILIARY SWITCHING MEANS CONNECTED WITH SAID POWER LINE IN PARALLEL WITH SAID MAIN SWITCHING MEANS, CONTROL CIRCUIT MEANS CONNECTED WITH SAID POWER LINE AND SAID AUXILIARY SWITCHING MEANS AN OPERABLE TO CLOSE THE LATTER ONLY WHEN THE POWER LINE VOLTAGE IS SUBSTANTIALLY AT ZERO POTENTIAL, AND SELECTIVELY OPERABLE ACTUATING MEANS CONNECTED WITH AND ADAPTED TO ARM SAID CONTROL CIRCUIT MEANS FOR CLOSING OF SAID AUXILIARY SWITCHING MEANS.
Claim 2
Dependent Claim
108 words
FOR USE IN A POWER LINE BETWEEN A SOURCE OF ELECTRICAL ENERGY OF VARYING POTENTIAL AND A LOAD, A SWITCH COMPRISING A MAIN SWITCHING MEANS IN THE POWER LINE, SELECTIVELY OPERABLE MEANS FOR OPENING AND CLOSING SAID MAIN SWITCHING MEANS, AN AUXILIARY SWITCHING MEANS CONNECTED WITH SAID POWER LINE IN PARALLEL WITH SAID MAIN SWITCHING MEANS, CONTROL CIRCUIT MEANS CONNECTED WITH SAID POWER LINE AND SAID AUXILIARY SWITCHING MEANS AN OPERABLE TO CLOSE THE LATTER ONLY WHEN THE POWER LINE VOLTAGE IS SUBSTANTIALLY AT ZERO POTENTIAL, AND SELECTIVELY OPERABLE ACTUATING MEANS CONNECTED WITH AND ADAPTED TO ARM SAID CONTROL CIRCUIT MEANS FOR CLOSING OF SAID AUXILIARY SWITCHING MEANS.
References Cited (Backward Citations)
GB688720A
Cited
US3132287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |