Resetting ignition switch for a gasoline powered chain saw

Details Resetting ignition switch for a gasoline powered chain saw Resetting ignition switch for a gasoline powered chain saw

F - Mech Eng,Light,Heat,Weapons

02

P

F02P 11/00 (2006.01) B27B 17/00 (2006.01) F02D 11/04 (2006.01) F02M 1/02 (2006.01) F02B 75/02 (2006.01)

Patent

CA 2189146

A resetting ignition switch for a portable power tool whereby movement of a choke assembly from a first, normal position to a second, choking position simultaneously and automatically moves an ignition switch from a stop to a run position to permit starting of the engine. The ignition switch, which forms a portion of an ignition circuit for the power tool, includes an integral lever which extends across a body of the power tool and relatively beneath a shaft of the choke. The shaft includes a depending arm which engages and rotates the lever as the shaft is moved longitudinally from its normal position toward its choking position. Rotation of the lever causes the ignition switch to pivotally move from the stop to the run position. The ignition switch is movably without interference from the choke assembly when the choke assembly is in its normal position.

L'invention porte sur un interrupteur de réarmement du processus d'allumage d'un outil à moteur portatif dans lequel le déplacement d'un étrangleur (36, 48) d'une première position d'étranglement normale à une seconde déplace simultanément et automatiquement un interrupteur de réarmement (34) de la position d'arrêt à celle de marche, ce qui permet au moteur de démarrer. Cet interrupteur, constituant une partie d'un circuit d'allumage de l'outil à moteur, comporte un levier monobloc (62) traversant le corps de l'outil relativement en dessous de la tige de l'étrangleur. Cette dernière comprend un bras commandé (52) venant au contact du levier et le faisant tourner lorsque la tige se déplace longitudinalement de sa position normale vers sa position de fonctionnement. La rotation du levier fait pivoter l'interrupteur (34) de la position d'arrêt à celle de marche. Cet interrupteur est susceptible d'être déplacé sans que l'étrangleur, lorsque il se trouve en position normale, n'entraîne de perturbation.

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