Start safety apparatus for internal combustion engine

Patent · Tue Sep 09 00:00:00 EDT 1986

OSTI ID:5231667

Nakata, H; Souma, H

A start safety apparatus of an engine adapted for a multipurpose power tool is described which consists of: an engine, an exciter coil generating alternate electromotive force in synchronism with rotation of the engine; an ignition coil having primary and secondary windings; a spark plug connected to the secondary winding of the ignition coil; a capacitor connected to the primary winding of the ignition coil the capacitor being charged with a positive half-cycle of the electromotive force; ignition timing control means for controlling discharge of the capacitor; a throttle control latch for setting a throttle valve of the engine in a predetermined throttle angle; a tool driven by the engine; and a centrifugal clutch transferring engine power to the tool when an engine speed exceeds a clutch-in speed.

• Assignee: Oppama Kogyo Kabushiki Kaisha, Yokosuka
• Patent Number(s): US 4610231
• OSTI ID: 5231667
• Resource Relation: Patent File Date: Filed date 15 Nov 1984
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
SPARK IGNITION ENGINES
CONTROL SYSTEMS
IGNITION SYSTEMS
SAFETY
CAPACITORS
ELECTRIC COILS
ELECTRIC POTENTIAL
ELECTRIC SPARKS
ELECTROMOTIVE FORCE
EXCITATION
INCIDENCE ANGLE
ROTATION
SEMICONDUCTOR SWITCHES
SYNCHRONIZATION
TIMING PROPERTIES
VELOCITY
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ENERGY-LEVEL TRANSITIONS
ENGINES
EQUIPMENT
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MOTION
SEMICONDUCTOR DEVICES
SWITCHES
330101* - Internal Combustion Engines- Spark-Ignition