WO2025127979 - IGNITION SYSTEM, INTERNAL COMBUSTION ENGINE, AND HANDHELD POWER TOOL
National phase entry is expected:
Publication Number
WO/2025/127979
Publication Date
19.06.2025
International Application No.
PCT/SE2024/050913
International Filing Date
28.10.2024
Title **
[English]
IGNITION SYSTEM, INTERNAL COMBUSTION ENGINE, AND HANDHELD POWER TOOL
[French]
SYSTÈME D'ALLUMAGE, MOTEUR À COMBUSTION INTERNE, ET OUTIL ÉLECTRIQUE PORTATIF
Applicants **
HUSQVARNA AB
Inventors
FRÖBOM, Jens
GÖRAS, Anders
SVENSSON, Lars
Priority Data
2351422-7
13.12.2023
SE
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
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| Number of Office Actions | * |
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International Searching Authority |
SPRO
* |
| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
* |
| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Legal Entity
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| * | |
| * | |
| * | |
| * | |
| * | |
| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| 译文 |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1967 | |
| EPO | Filing, Examination, Granting | 9171 | |
| Japan | Filing, Examination, Granting | 2093 | |
| South Korea | Filing, Examination, Granting | 2004 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
19,975
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
An ignition system (1) is disclosed configured to generate an ignition current. The ignition system (1) comprises a supply line (4), an ignition coil (5), a charge capacitor (C) connected to the supply line (4) and to the ignition coil (5), a generator (7) configured to generate an alternating current in the supply line (4), and a boost circuit (8) electrically connected to the supply line (4). The boost circuit (8) comprises a switch assembly (9) controllable to a second state in which current is drawn from the supply line (4) into the boost circuit (8). The ignition system (1) further comprises a thyristor (11) controllable to an open state to trigger generation of the ignition current. The ignition system (1) further comprises a control arrangement (21) configured to control the switch assembly (9) to the second state when the thyristor (11) is controlled to the open state. The present disclosure further relates to an internal combustion engine (2) and a handheld power tool (3).[French]
Est divulgué un système d'allumage (1) conçu pour générer un courant d'allumage. Le système d'allumage (1) comprend une ligne d'alimentation (4), une bobine d'allumage (5), un condensateur de charge (C) connecté à la ligne d'alimentation (4) et à la bobine d'allumage (5), un générateur (7) conçu pour générer un courant alternatif dans la ligne d'alimentation (4), et un circuit de suralimentation (8) connecté électriquement à la ligne d'alimentation (4). Le circuit de suralimentation (8) comprend un ensemble commutateur (9) pouvant être commandé dans un second état dans lequel le courant est tiré de la ligne d'alimentation (4) dans le circuit de suralimentation (8). Le système d'allumage (1) comprend en outre un thyristor (11) pouvant être commandé dans un état ouvert pour déclencher la génération du courant d'allumage. Le système d'allumage (1) comprend en outre un agencement de commande (21) conçu pour commander l'ensemble commutateur (9) dans le second état lorsque le thyristor (11) est commandé à l'état ouvert. La présente divulgation concerne en outre un moteur à combustion interne (2) et un outil électrique portatif (3).