US3229154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectrical ignition systems
Assignee: Mcculloch Corp
•
Filing: 1962-06-04
•
Granted: 1966-01-11
•
Expires: 1982-06-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Crownover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:48
CPC Classifications
F; F02; F02P; F02P3/00; F02P3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN AN IGNITION SYSTEM HAVING A SPARK GAP: (A) A PIEZOELECTRIC ELEMENT HAVING A TIME CONSTANT DETERMINED BY ITS CAPACITANCE AND ITS LEAKAGE RESISTANCE OF THE ORDER OF ONE SECOND; (B) MEANS FOR MECHANICALLY AND CYCLICALLY GRADUALLY STRESSING SAID ELEMENT TO DEVELOP A RELTAIVELY LOW VARYING VOLTAGE ACROSS SAID ELEMENT; (C) MEANS COUPLED TO SAID PIEZOELECTRIC ELEMENT FOR DERVING A PEAK VOLTAGE FROM SAID PIEZOELECTRIC ELEMENT; AND (D) TRANSFORMER MEANS COUPLED IN SERIES WITH SAID MEANS FOR DERIVING AND THE SPARK GAP FOR DELIVERING A TRANSFORMED HIGH VOLTAGE PULSE.
Claim 2
Dependent Claim
89 words
IN AN IGNITION SYSTEM HAVING A SPARK GAP: (A) A PIEZOELECTRIC ELEMENT HAVING A TIME CONSTANT DETERMINED BY ITS CAPACITANCE AND ITS LEAKAGE RESISTANCE OF THE ORDER OF ONE SECOND; (B) MEANS FOR MECHANICALLY AND CYCLICALLY GRADUALLY STRESSING SAID ELEMENT TO DEVELOP A RELTAIVELY LOW VARYING VOLTAGE ACROSS SAID ELEMENT; (C) MEANS COUPLED TO SAID PIEZOELECTRIC ELEMENT FOR DERVING A PEAK VOLTAGE FROM SAID PIEZOELECTRIC ELEMENT; AND (D) TRANSFORMER MEANS COUPLED IN SERIES WITH SAID MEANS FOR DERIVING AND THE SPARK GAP FOR DELIVERING A TRANSFORMED HIGH VOLTAGE PULSE.
References Cited (Backward Citations)
US3009975A
Cited
US3106161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |