Coaxial engine starter with spaced output shaft bearings

Details Coaxial engine starter with spaced output shaft bearings Coaxial engine starter with spaced output shaft bearings

1989-11-02

1991-01-29

Herrmann, Allan D.

Machine element or mechanism

Engine starters

Automatic

74 7A, 74 7E, F02N 1506

Patent

active

049877860

ABSTRACT:
An output rotary shaft 12 of a coaxial engine starter has at one end thereof a pinion 19 engageable with an engine ring gear and is inserted at the other end into a tubular armature rotary shaft 11a of a motor. A clutch inner member 15b of a unidirectional clutch having helical splines formed in its inner circumference is engaged with a helical spline portion 12a formed on the armature rotary shaft. The engine starter further comprises a bearing surface 21a; 26 on the clutch inner member and a bearing 13 fitted within the inner circumferential surface of the tublar armature rotary shaft, and the output rotary shaft is supported by the bearing surface of the clutch inner member and the bearing. The output rotary shaft may have an enlarged-diameter portion 12b at the position inserted within the armature rotary shaft, which axially extends substantially between the helical spline portion and the bearing and defines a small annular clearance 24 between it and the inner circumferential surface of the armature rotary shaft.

REFERENCES:
patent: 2333765 (1943-11-01), Celio
patent: 4613761 (1986-09-01), Yabunaka
patent: 4760274 (1988-07-01), Isozumi
patent: 4800766 (1989-01-01), Isozumi et al.
patent: 4852417 (1989-08-01), Tanaka
patent: 4907464 (1990-03-01), Isozumi
U.S. National Phase of PCT Application Serial No. 221,245.

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