US3824432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery igniter
Assignee: Braun GmbH
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Filing: 1973-08-15
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Granted: 1974-07-16
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Expires: 1993-08-15
Abstract
Abstract A battery igniter particularly suitable for lighters. The igniter uses a battery as the energy source which in turn feeds a voltage converter including an oscillating transformer with a feedback branch. A rectifier follows the voltage converter to which is connected a storage capacitor. The storage capacitor in turn is connected by means of a high voltage switch to a high voltage igniter transformer. The secondary winding of the high voltage transformer is connected to a spark gap which performs the ignition.
Inventors
- 👤 E Gersing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:24
CPC Classifications
F; F23; F23Q; F23Q2/00; F23Q2/28; F23Q2/285; F23Q3/00; F23Q3/004
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
151 words
Battery igniter of the type provided with a battery as an energy source, a voltage converter consisting of an oscillating transformer fed by the battery and having a feedback branch, a rectifier following the voltage transformer, a charge storage capacitor connected to the rectifier, a high voltage igniting transformer connected to the charge storage capacitor by means of a high current switch, and a spark gap defined by two electrodes connected to the secondary winding of the high voltage transformer, the improvement comprising: a resistor and a wiper contact operating as an actuation switch for switching the feedback branch into a state capable of exciting the voltage converter into oscillation, the secondary winding of the oscillation transformer of the voltage converter having such a capacity that the energy stored during the secondary peak voltage of the oscillating transformer is at least as large as the energy required for exciting an oscillation.
Claim 2
Dependent Claim
151 words
Battery igniter of the type provided with a battery as an energy source, a voltage converter consisting of an oscillating transformer fed by the battery and having a feedback branch, a rectifier following the voltage transformer, a charge storage capacitor connected to the rectifier, a high voltage igniting transformer connected to the charge storage capacitor by means of a high current switch, and a spark gap defined by two electrodes connected to the secondary winding of the high voltage transformer, the improvement comprising: a resistor and a wiper contact operating as an actuation switch for switching the feedback branch into a state capable of exciting the voltage converter into oscillation, the secondary winding of the oscillation transformer of the voltage converter having such a capacity that the energy stored during the secondary peak voltage of the oscillating transformer is at least as large as the energy required for exciting an oscillation.
Claim 3
Dependent Claim
14 words
Igniter as defined in claim 1 wherein said voltage converter is a blocking converter.
Claim 4
Dependent Claim
14 words
Igniter as defined in claim 1 wherein said voltage converter is a summing converter.
Claim 5
Dependent Claim
14 words
Igniter as claimed in claim 3 wherein the rectifier consists of a Villard rectifier.
Claim 6
Dependent Claim
27 words
Igniter as defined in claim 1 wherein said wiper contact is connected into the feedback branch for switching said feedback branch into and out of said circuit.
Claim 7
Dependent Claim
33 words
Igniter as defined in claim 1 wherein said voltage converter includes a transistor and wherein said wipEr contact is coupled to said transistor for switching in and out the base bias voltage thereof.
Claim 8
Dependent Claim
23 words
Igniter as defined in claim 1 wherein said parallel capacitance is formed by the capacitance of the secondary winding of said oscillation transformer.
Claim 9
Dependent Claim
27 words
Igniter as defined in claim 5 wherein said wiper contact is coupled to an additional operating contact forming the high current switch and having a delayed action.
Claim 10
Dependent Claim
14 words
Igniter as defined in claim 1 wherein said wiper consists of an electronic switch.
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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |