US3173772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling an electrical precipitator
Assignee: Buell Engineering Co Inc
•
Filing: 1962-02-09
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Granted: 1965-03-16
•
Expires: 1982-02-09
Abstract
No abstract record available.
Inventors
- 👤 Peter C Gelfand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:25
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/66; B03C3/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN A CIRCUIT FOR ENERGIZING AN ELECTRICAL PRECIPITATOR, THE COMBINATION COMPRISING FIRST CIRCUIT MEANS CONDUCTING CURRENT TO THE PRECIPITATOR AND RESPONSIVE TO CHANGES IN SAID CURRENT DUE TO SPARKING PULSES IN THE PRECIPITATOR FOR GENERATING A SPARKING SIGNAL REPRESENTATIVE OF THE ENERGY CONTENT AND THE WAVEFORM OF SAID SPARKING PULSES, A FIRST INTEGRATING CIRCUIT COUPLED TO SAID FIRST CIRCUIT MEANS AND RESPONSIVE TO THE SPARKING SIGNAL TO GENERATE AN INTEGRATED SIGNAL SUBSTANTIALLY REPRESENTATIVE OF THE
Claim 2
Dependent Claim
75 words
IN A CIRCUIT FOR ENERGIZING AN ELECTRICAL PRECIPITATOR, THE COMBINATION COMPRISING FIRST CIRCUIT MEANS CONDUCTING CURRENT TO THE PRECIPITATOR AND RESPONSIVE TO CHANGES IN SAID CURRENT DUE TO SPARKING PULSES IN THE PRECIPITATOR FOR GENERATING A SPARKING SIGNAL REPRESENTATIVE OF THE ENERGY CONTENT AND THE WAVEFORM OF SAID SPARKING PULSES, A FIRST INTEGRATING CIRCUIT COUPLED TO SAID FIRST CIRCUIT MEANS AND RESPONSIVE TO THE SPARKING SIGNAL TO GENERATE AN INTEGRATED SIGNAL SUBSTANTIALLY REPRESENTATIVE OF THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |