US3863618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butterfly valve arrangement for a combustion engine having external ignition
Assignee: Volkswagen AG
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Filing: 1973-07-16
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Granted: 1975-02-04
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Expires: 1993-07-16
Abstract
Abstract For a combustion engine having combustion spaces therein, an ignition circuit for delivering an ignition spark to the combustion spaces, a butterfly valve for controlling the fuel mixture to said combustion spaces, a closure spring for returning the butterfly valve into a closed position when the associated accelerator is not actuated, the ignition circuit including the closure spring as an element, whereby when the closure spring develops a discontinuity, the ignition circuit is prevented from delivering a spark to the combustion spaces.
Inventors
- 👤 Norbert Scholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:13
CPC Classifications
F; F02; F02D; F02D17/00; F02D2700/00; F02D2700/05; F02D2700/052; F02D2700/058
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
127 words
In a combustion engine having combustion space means, an ignition arrangement for deliverying an ignition spark to the combustion space means, a butterfly valve means for controlling the fuel mixture to said combustion space means, a closure spring means for returning said butterfly valve means into a closed position when an associated accelerator is not actuated, said ignition circuit arrangement including said closure spring means, whereby when said closure spring means develop a discontinuity, said ignition circuit arrangement is prevented from delivering a spark to said combustion space means wherein said ignition circuit arrangement includes an ignition coil means and an interrupter contact means, a circuit portion connecting said ignition coil means with said interrupter contact means, said closure spring means being placed into said circuit portion.
Claim 2
Dependent Claim
127 words
In a combustion engine having combustion space means, an ignition arrangement for deliverying an ignition spark to the combustion space means, a butterfly valve means for controlling the fuel mixture to said combustion space means, a closure spring means for returning said butterfly valve means into a closed position when an associated accelerator is not actuated, said ignition circuit arrangement including said closure spring means, whereby when said closure spring means develop a discontinuity, said ignition circuit arrangement is prevented from delivering a spark to said combustion space means wherein said ignition circuit arrangement includes an ignition coil means and an interrupter contact means, a circuit portion connecting said ignition coil means with said interrupter contact means, said closure spring means being placed into said circuit portion.
Claim 3
Dependent Claim
121 words
In a combustion engine having a combustion space means, an ignition arrangement for delivering an ignition spark to the combustion space means, a butterfly valve means for controlling the fuel mixture to said combustion space means, a closure spring means for returning said butterfly valve means into a closed position when an associated accelerator is not actuated, said ignition circuit arrangement including said closure spring means, whereby when said closure spring means develop a discontinuity said ignition circuit arrangement is prevented from delivering a spark to said combustion space means wherein said closure spring means are connected into an energizing circuit of a delayed action relay means, an operating contact of said relay means being placed into said ignition circuit arrangement.
Claim 4
Dependent Claim
121 words
In a combustion engine having a combustion space means, an ignition arrangement for delivering an ignition spark to the combustion space means, a butterfly valve means for controlling the fuel mixture to said combustion space means, a closure spring means for returning said butterfly valve means into a closed position when an associated accelerator is not actuated, said ignition circuit arrangement including said closure spring means, whereby when said closure spring means develop a discontinuity said ignition circuit arrangement is prevented from delivering a spark to said combustion space means wherein said closure spring means are connected into an energizing circuit of a delayed action relay means, an operating contact of said relay means being placed into said ignition circuit arrangement.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |