Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1976-10-04
1979-12-18
Chandler, Lance
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
F16H 5710
Patent
active
041788141
ABSTRACT:
A two-speed planetary gear transmission including direct drive connectable by a clutch wherein the input and output shafts rotate together and a second gear drive namely overdrive or underdrive wherein one of the sun or ring gears are held stationary by a brake relative to the casing. A spring which causes engagement of the direct drive clutch exerts its greatest force when the clutch is engaged, it exerts a relatively high biasing force upon initial disengagement of the clutch under the action of an actuating device such as a servo-motor, to thereby assure initially a significantly reduced level of torque transfer at the brake, to thereby provide a smooth gear transition. The spring force then becomes significantly less when the brake is engaged. The forces exerted by the spring in direct drive and by the actuating device in second gear drive bypass rotary bearings which are in motion at such times.
REFERENCES:
patent: 2136971 (1938-11-01), Fleischel
patent: 2578308 (1951-12-01), Iavelli
patent: 2939558 (1960-06-01), Schjolin
patent: 3090257 (1963-05-01), Schjolin
patent: 3295394 (1967-01-01), Whateley
patent: 3382736 (1968-05-01), Abbott
patent: 3893551 (1975-07-01), Ahlen
Chandler Lance
S.R.M. Hydromekanik Aktiebolag
LandOfFree
Two-speed gear transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two-speed gear transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-speed gear transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-448696