Coaxial engine starter

Details Coaxial engine starter Coaxial engine starter

1990-02-20

1991-07-30

Scott, J. R.

Prime-mover dynamo plants

Electric-starting motor

74 6, 74 7R, 310 88, F02N 1100

Patent

active

050362135

ABSTRACT:
The coaxial engine starter of the present invention comprises an electric motor having a rotary armature shaft and a yoke, a solenoid switch disposed behind the electric motor, an output rotary shaft disposed in front of the electric motor in an axially aligned relationship, and a planetary speed reduction gear disposed in front of and in axial alignment with the electric motor. The planetary speed reduction gear comprises a sun gear disposed on the motor armature shaft, a plurality of planetary gears disposed around the sun gear and an inner gear disposed around the planetary gears. The output rotary shaft has mounted thereon a pinion gear for engaging with an engine ring gear to be driven. The coaxial engine starter further comprises a front bracket assembly including a housing made of a resin material, the housing rotatably supporting the output rotary shaft and having integrally formed therein the inner gear of the planetary speed reduction gear, and a metallic mounting flange disposed around the housing for mounting the coaxial engine starter to the engine, the mounting flange being in direct electrical contact with the motor yoke.

REFERENCES:
patent: 4553442 (1985-11-01), Mazzorana
patent: 4760274 (1988-07-01), Isozumi
patent: 4808836 (1989-02-01), Isozumi et al.

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