Starter drive

Details Starter drive Starter drive

1987-02-17

1988-04-19

Herrmann, Allan D.

Machine element or mechanism

Engine starters

Automatic

74 9, 290 38R, 318376, F02N 1506

Patent

active

047381485

ABSTRACT:
A starter drive is disclosed for a starting system of an internal combustion engine. A pinion is rotatably mounted on the starter motor shaft for engagement with the ring gear on the fly wheel of the engine. A drive sleeve disposed coaxially of the shaft is coupled with the pinion through an overrunning clutch. A helical cam and follower are connected between the shaft and the drive sleeve for advancing and retracting the pinion according to the relative speeds of the drive sleeve and the shaft. A friction brake is provided for the drive sleeve to restrain it against rotation during advancing movement of the starter drive. The starter motor has a permanent magnet field and the armature is connected across an electromagnet by the starter switch when it is turned off to provide dynamic braking for the motor. The electromagnet coacts with the permanent magnet brake to disable the friction brake while the motor is slowing down.

REFERENCES:
patent: 1829624 (1931-10-01), Abell
patent: 2342632 (1944-02-01), Hood
patent: 2863320 (1958-12-01), Mendenhall
patent: 2926265 (1960-02-01), Isley et al.
patent: 3090242 (1963-05-01), Sabatini
patent: 3399575 (1968-09-01), Seilly et al.
patent: 3572133 (1971-03-01), Glometti
patent: 3868858 (1975-03-01), Reichardt et al.
patent: 3875805 (1975-04-01), Toulier
patent: 4308462 (1981-12-01), McMillen

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