US4722311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor ignition apparatus
Assignee: Pruefrex Elektro Apparatebau GmbH
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Filing: 1987-02-04
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Granted: 1988-02-02
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Expires: 2007-02-04
Abstract
Abstract Capacitor ignition apparatus for internal-combustion engines with a magneto generator and an ignition pulse generator for the switching through of an electronic switch which discharges the capacitor via the primary winding of the ignition coil, wherein the ignition pulse generator triggered by the magneto generator and provided with a revolution counter effects via a stored ignition characteristics program a revolution-dependent delay of the ignition pulse with respect to the magneto generator pulse.
Inventors
- 👤 Werner Erhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:09
CPC Classifications
F; F02; F02P; F02P5/00; F02P5/04; F02P5/145; F02P5/15; F02P5/1502; F02P5/1504; F02P1/00; F02P1/08; F02P1/086; F02P11/00; F02P11/02; F02P5/1506; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
93 words
Capacitor ignition apparatus for internal-combustion engines of the type having a magneto generator and an ignition pulse generator for the switching through of an electronic switch which discharges a capacitor via the primary winding of an ignition coil, comprising an ignition pulse generator means triggered by the magneto generator, revolution counter means, and a stored ignition characteristics program means connected to said revolution counter means, said revolution counter means effecting via said characteristics program means a delay of the ignition pulse depending on the rotational speed with respect to the magneto generator pulse.
Claim 2
Dependent Claim
93 words
Capacitor ignition apparatus for internal-combustion engines of the type having a magneto generator and an ignition pulse generator for the switching through of an electronic switch which discharges a capacitor via the primary winding of an ignition coil, comprising an ignition pulse generator means triggered by the magneto generator, revolution counter means, and a stored ignition characteristics program means connected to said revolution counter means, said revolution counter means effecting via said characteristics program means a delay of the ignition pulse depending on the rotational speed with respect to the magneto generator pulse.
Claim 3
Dependent Claim
41 words
Capacitor ignition apparatus according to claim 1, wherein said revolution counter means further comprises means for generating a signal which distinguishes between rising and falling rotational speeds, said ignition characteristics program means containing different programs for rising and falling rotational speeds.
Claim 4
Dependent Claim
37 words
Capacitor ignition apparatus according to claim 2 further comprising a rotation direction detector means for detecting the direction of rotation and for preventing the release of ignition pulses during the incorrect direction of rotation of the engine.
Claim 5
Dependent Claim
27 words
Capacitor ignition apparatus according to claim 3, wherein said rotation direction detector means responds to the number of positive and/or negative half-waves induced in the magneto generator.
Claim 6
Dependent Claim
28 words
Capacitor ignition apparatus according to claim 4 further comprising a pulse delay circuit means connected to said ignition characteristics program means and to said revolution direction detector means.
Claim 7
Dependent Claim
34 words
Capacitor ignition apparatus according to claim 5 wherein said rotation direction detector means, said revolution counter means, said ignition characteristics program means, and said pulse delay circuit means are formed as a unitized circuit.
Claim 8
Dependent Claim
16 words
Capacitor ignition apparatus according to claim 6 wherein said unitized circuit is formed as a microchip.
Claim 9
Dependent Claim
32 words
Capacitor ignition apparatus according to claim 1 wherein the current supply of the ignition pulse generator has as an energy source a coil associated with the magnet wheel of the magneto generator.
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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) | 1991-02-01 | 1991-08-03 | 1992-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-01 | 1995-08-03 | 1996-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-01 | 1999-08-03 | 2000-02-02 | $7700.00 | Window Closed / Lapsed |