Planetary gear transmission systems or components – Electric or magnetic drive or control – Differential drive or control
Patent
1992-04-17
1993-06-08
Wright, Dirk
Planetary gear transmission systems or components
Electric or magnetic drive or control
Differential drive or control
475249, F16H 144
Patent
active
052174166
ABSTRACT:
The present invention relates to a differential gear assembly including a rotatable case having an annular gear formed therein with first and second axle shafts journalled in the case for rotation relative thereto. A sun gear is connected to the first axle shaft for rotation therewith, and a planetary carrier is connected to the second axle shaft for rotation therewith. A plurality of pairs of planetary gears is supported on the carrier, with a first gear of each of the pairs meshing with the annular gear and a second of each of the pairs meshing with the sun gear. Clutch means are provided for limiting relative rotation between the first axle shaft and the second axle shaft by clutching the sun gear to the planetary carrier, the clutch means including a clutch pack formed of a plurality of annular clutch disks. The assembly also incorporates means for selectively compressing the clutch pack, including an actuator plate spaced by an air gap an effective distance from an electromagnet disposed between the actuator plate and the clutch pack. A pressure plate is disposed adjacent the clutch pack, the pressure plate being connected to the actuator plate by means of a plurality of legs. Upon actuation of the electromagnet, the actuator plate is drawn towards the electromagnet, moving the plurality of legs axially and urging the pressure plate against the clutch pack.
REFERENCES:
patent: 2420553 (1947-05-01), Morrill
patent: 2429702 (1947-10-01), Thompson
patent: 2803150 (1957-08-01), Fisher
patent: 3138232 (1964-06-01), Gerber et al.
patent: 3215234 (1965-11-01), Hirano
patent: 4718303 (1988-01-01), Fogelberg
patent: 4781078 (1988-11-01), Blessing et al.
patent: 4805486 (1989-02-01), Hagiwara et al.
patent: 4838118 (1989-06-01), Binkley
patent: 4895051 (1990-01-01), Weiss et al.
patent: 5007885 (1991-04-01), Yamamoto et al.
patent: 5019021 (1991-05-01), Janson
patent: 5156578 (1992-10-01), Hirota
Dana Corporation
Wright Dirk
LandOfFree
Lock up/limited slip differential does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lock up/limited slip differential, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lock up/limited slip differential will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1930276