Patent US3273019A successfully refreshed from Google Patents.
US3273019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct spark ignition system
Assignee: Penn Controls Inc
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Filing: 1963-10-08
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Granted: 1966-09-13
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Expires: 1983-10-08
Abstract
No abstract record available.
Inventors
- 👤 Russell B Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:49
CPC Classifications
F; F23; F23Q; F23Q3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A SPART IGNITION SYSTEM COMPRISING: A SPARK GAP, ENERGIZING MEANS CONNECTED TO THE SPARK GAP TO CAUSE A CONTINUOUSLY FIRING ALTERNATING CURRENT SPARK TO APPEAR ACROSS SAID GAP, A RESISTANCE-CAPACITANC CIRCUIT CONNECTED TO SAID ENERGIZING MEANS TO LIMIT A PERIOD DURING WHICH SAID SPARK GAP CONTINUOUSLY FIRES TO A PRESELECTED VALUE, ACTUATION MEANS FOR OPENING A FUEL VALVE CONNECTED TO SAID ENERGIZING MEANS FOR ENERGIZATION ONLY DURING SAID SPARK FIRING PERIOD, VALVE HOLDING MEANS, FLAME SENSING MEANS, AND A MAGNETIC AMPLIFIER COMPRISING A PAIR OF MAGNETIC REACTORS, EACH SAID REACTOR HAVING A LOAD WINDING, A BIAS WINDING, AND A CONTROL WINDING, SAID LOAD WINDINGS BEING CONNECTED TO SAID VALVE HOLDING MEANS, SAID BIAS WINDINGS BEING CONNECTED TO SAID ENERGIZING MEANS IN ORDER TO HAVE SAID ENERGIZING MEANS IN-
Claim 2
Dependent Claim
128 words
A SPART IGNITION SYSTEM COMPRISING: A SPARK GAP, ENERGIZING MEANS CONNECTED TO THE SPARK GAP TO CAUSE A CONTINUOUSLY FIRING ALTERNATING CURRENT SPARK TO APPEAR ACROSS SAID GAP, A RESISTANCE-CAPACITANC CIRCUIT CONNECTED TO SAID ENERGIZING MEANS TO LIMIT A PERIOD DURING WHICH SAID SPARK GAP CONTINUOUSLY FIRES TO A PRESELECTED VALUE, ACTUATION MEANS FOR OPENING A FUEL VALVE CONNECTED TO SAID ENERGIZING MEANS FOR ENERGIZATION ONLY DURING SAID SPARK FIRING PERIOD, VALVE HOLDING MEANS, FLAME SENSING MEANS, AND A MAGNETIC AMPLIFIER COMPRISING A PAIR OF MAGNETIC REACTORS, EACH SAID REACTOR HAVING A LOAD WINDING, A BIAS WINDING, AND A CONTROL WINDING, SAID LOAD WINDINGS BEING CONNECTED TO SAID VALVE HOLDING MEANS, SAID BIAS WINDINGS BEING CONNECTED TO SAID ENERGIZING MEANS IN ORDER TO HAVE SAID ENERGIZING MEANS IN-
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |