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US 2019/0120330 A1Published application
Epicyclic gear train, advantageously for a servomotor system, method and servomotor system using such an epicyclic gear train
AssigneeBernard Controls
InventorsEtienne BERNARD, Rémy LEPAN
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Abstract
An epicyclic gear train for a servomotor system includes a case, and, positioned in the case, a planet carrier carrying planet gears, a ring gear, and a sun gear. The epicyclic gear train includes a control for changing input and output speed ratio in response to an input applied from outside the case.
Claims14
An epicyclic gear train including:
- a case;
- a gear train disposed within the case, having an axis, and comprising a plurality of planet gears, a planet carrier carrying the plurality of planet gears, a ring gear, and a sun gear;
- a rotatable input member;
- a rotatable output member coupled to the input member by the gear train so that rotation of the input member at an input speed rotates the output member at an output speed that has a speed ratio relative to the input speed;
- and
- control means, actuable from outside the case, for changing the speed ratio.
3 more elements
A method for controlling a rotating actuator member of a valve, comprising:
- rotating the rotating actuator member by rotating a manually actuated hand wheel between an open position of the valve and a closed position of the valve, wherein the rotation of the actuator member from the open position to the closed position includes a first phase for approaching the closed position in which torque necessary is relatively low, and a second phase for reaching the closed position and in which the torque necessary is relatively high;
- and
- multiplying, during the first phase, relative to the second phase, number of revolutions of the hand wheel relative to number of revolutions of the rotating actuator member.
(canceled)
Dependencies are inferred from the claim text.