公开(公告)号：US11499594B2

公开(公告)日：2022-11-15

申请号：US17284601

申请日：2019-10-11

Applicant: EXONETIK INC.

Inventor： Jean-Sebastien Plante ,  Jérôme Marchand ,  Pascal Larose ,  Patrick Chouinard ,  Marc Denninger ,  Jean-Philippe Lucking Bigue

IPC: F16D37/02 ,  F16D37/00

Abstract: A magnetorheological fluid clutch apparatus comprises an input(s) having an input shear surface(s). An output(s) is rotatably mounted about the input for rotating about a common axis with the input, the output(s) having output shear surface(s), the input shear surface and the output shear surface separated annular space(s), with magnetorheological fluid, configured to generate a variable amount of torque transmission between the sets of input rotor and output rotor when subjected to a magnetic field. An electromagnet(s) delivers a magnetic field through the magnetorheological fluid, the electromagnet configured to vary the strength of the magnetic field, whereby actuation of the electromagnet results in torque transmission from the input to the output. A member(s) defining at least one of the shear surfaces is made of a low-permeability material.

公开(公告)号：US12234900B2

公开(公告)日：2025-02-25

申请号：US17795736

申请日：2021-02-08

Applicant: EXONETIK INC.

Inventor： Jean-Sebastien Plante ,  Jean-Philippe Lucking Bigue ,  Catherine Veronneau ,  Pascal Larose

IPC: F16H47/00 ,  B25J9/10 ,  F16D37/02 ,  B25J19/00

Abstract: A magnetorheological (MR) actuator device comprising two or more MR actuator units. Each of the MR actuator units may include a motor, an MR fluid clutch apparatus operatively coupled to the motor to receive torque from the motor, the MR fluid clutch apparatus operable to generate a variable amount of torque transmission when subjected to a magnetic field. An output member is provided, a transmission operatively coupling the at least two MR actuator units to the output member, for the output member to receive torque from the MR actuator units. A controller for controlling the two or more MR actuator units to drive the output member, the controller driving the output member in at least an antagonistic mode in which the MR actuator units transmit torque in opposite directions to the output member. A collaborative mode may be provided to combined the torque of the two or more MR actuator units in a common direction on the output member.