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US 6,382,037 B1Granted
Starter
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsTakehiro Kobayashi, Shigeru Shiroyama, Akira Kuragaki, Koichiro Kamei, Hidekazu Katayama, Masahiko Tsukahara, Tadanori Yamaguchi, Jiro Hirao
Life of this patent
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Abstract
To prevent an attracting force to the plunger from becoming insufficient, at least one of an output shaft and a thrust spline is formed from magnetic material having a lower relative permeability than iron.
Claims1
A starter comprising:
- an output shaft driven by an electric motor;
- and
- a plunger, an exciting coil, and an over-running clutch coaxially arranged on the output shaft,
- wherein the plunger is attracted by exciting the exciting coil to drive the motor, and the over-running clutch with a thrust spline spline-connected to the output shaft is moved toward a ring gear to allow a pinion of the over-running clutch to mesh with the ring gear for starting an engine,
- wherein at least one of the output shaft and the thrust spline is formed from magnetic material that has a lower relative permeability than the periodic element iron, and
- wherein at least one of the output shaft and the thrust spline is formed from work-hardened austenitic stainless steel material.
3 more elements
Dependencies are inferred from the claim text.