Starter having excessive-torque-absorbing device

Details Starter having excessive-torque-absorbing device Starter having excessive-torque-absorbing device

2004-09-13

2008-11-18

Ridley, Richard W (Department: 3682)

Machine element or mechanism

Engine starters

Automatic

C464S046000, C475S149000

Reexamination Certificate

active

07451668

ABSTRACT:
A starter for cranking an internal combustion engine includes an electric motor, a planetary gear speed reduction device for reducing a rotational speed of the electric motor and an excessive-torque-absorbing device. The excessive-torque-absorbing device is composed of plural rotatable disks that form an internal gear of the speed reduction device, plural fixed disks and a disk spring. Both disks are alternately laminated and pressed in the laminated direction by the disk spring. When a rotational torque of the electric motor to be transmitted to a pinion gear of the starter exceeds a predetermined level, slippage occurs between the rotatable disks and the fixed disks, and thereby the excessive torque is absorbed.

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