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Patent US3283179A successfully refreshed from Google Patents.
US3283179A
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Apparatus for and method of zero switching
Assignee: Vapor Corp
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Filing: 1963-09-17
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Granted: 1966-11-01
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Expires: 1983-09-17
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Carlisle
- 👤 Edward J Flannery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:46
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/54; H01H9/56; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/1909; G05D23/20; G05D23/24; H02; H02M; H02M1/00; H02M1/08; H02M1/083; H03; H03K; H03K5/00; H03K5/153; H03K5/1536
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
APPARATUS OF THE CHARACTER DISCLOSED COMPRISING CIRCUIT MEANS ADAPTED FOR CONNECTION WITH AN A.C. SOURCE, SWITCHING MEANS IN SAID CIRCUIT MEANS, AN ELECTRICALLY ENERGIZED LOAD IN SAID CIRCUIT MEANS, MEANS FOR SENSING TEMPERATURE CHANGES IN SAID LOAD, COINCIDENCE GATE MEANS, BRIDGE AMPLIFIER MEANS FOR PRODUCING A FIRST SIGNAL IN RESPONSE TO A TEMPERATURE CHANGE IN SAID LOAD AND OPERATIVE FOR TRANSMITTING IT TO SAID COINCIDENCE GATE MEANS, MEANS FOR PRODUCING A SECOND SIGNAL SUBSTANTIALLY COMENSURATE WITH A HALF WAVE OF THE A.C., AMPLIFIER MEANS OPERATIVE, IN RESPONSE TO SAID SIGNAL, FOR PRODUCING A SPIKE SIGNAL AT THE BEGINNING OF THE SECOND SIGNAL AND TRANSMITTING IT TO SAID COINCIDENCE GATE MEANS, SAID COINCIDENCE GATE MEANS BEING OPERATIVE, IN RESPONSE TO TRANSMISSION OF BOTH THE FIRST SIGNAL AND THE SPIKE SIGNAL SIMULTANEOUSLY THERETO, FOR ACTIVATING SAID SWITCHING MEANS.
Claim 2
Dependent Claim
136 words
APPARATUS OF THE CHARACTER DISCLOSED COMPRISING CIRCUIT MEANS ADAPTED FOR CONNECTION WITH AN A.C. SOURCE, SWITCHING MEANS IN SAID CIRCUIT MEANS, AN ELECTRICALLY ENERGIZED LOAD IN SAID CIRCUIT MEANS, MEANS FOR SENSING TEMPERATURE CHANGES IN SAID LOAD, COINCIDENCE GATE MEANS, BRIDGE AMPLIFIER MEANS FOR PRODUCING A FIRST SIGNAL IN RESPONSE TO A TEMPERATURE CHANGE IN SAID LOAD AND OPERATIVE FOR TRANSMITTING IT TO SAID COINCIDENCE GATE MEANS, MEANS FOR PRODUCING A SECOND SIGNAL SUBSTANTIALLY COMENSURATE WITH A HALF WAVE OF THE A.C., AMPLIFIER MEANS OPERATIVE, IN RESPONSE TO SAID SIGNAL, FOR PRODUCING A SPIKE SIGNAL AT THE BEGINNING OF THE SECOND SIGNAL AND TRANSMITTING IT TO SAID COINCIDENCE GATE MEANS, SAID COINCIDENCE GATE MEANS BEING OPERATIVE, IN RESPONSE TO TRANSMISSION OF BOTH THE FIRST SIGNAL AND THE SPIKE SIGNAL SIMULTANEOUSLY THERETO, FOR ACTIVATING SAID SWITCHING MEANS.
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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |