Integrated stator disk devices, systems, and methods for torque generation are provided. The resistive torque-generating device can include an integrated stator disk system including at least one metallic stator disk having a planar disk body, and at least one rotor disposed adjacent to the at least one metallic stator disk such that there are at least two shear areas formed by the at least one metallic stator disk and the at least one rotor; and magneto-rheological material disposed between portions of the at least one metallic stator disk and the at least one rotor. In some embodiments, the rotor(s) is/are a bent rotor(s), thereby providing for increased torque generation while fitting within tight space constraints.

A brake system includes a series of rotors for operatively coupling to a shaft and stators for operatively coupling to a frame. A service brake system includes a singular annular service piston extending continuously around the series of rotors and stators and a parking brake system includes a singular annular parking piston positioned to extend continuously around the series of rotors and stators. The service piston nests with the parking piston, under a spring bias, such that the parking piston and service piston continuously engage together around the series of rotors and stators to thereby create the parking brake forces. Springs act on the parking piston to drive the parking piston and nested service piston to engage for parking brake forces. Pressurization of the parking piston deactuates the nested pistons. Then separate pressurization of fluid acts on the service piston to overcome the spring bias and separate the service piston from the parking piston to create service brake forces.

Integrated stator disk devices, systems, and methods for torque generation are provided. The resistive torque-generating device can include an integrated stator disk system including at least one metallic stator disk having a planar disk body, and at least one rotor disposed adjacent to the at least one metallic stator disk such that there are at least two shear areas formed by the at least one metallic stator disk and the at least one rotor; and magneto-rheological material disposed between portions of the at least one metallic stator disk and the at least one rotor. In some embodiments, the rotor(s) is/are a bent rotor(s), thereby providing for increased torque generation while fitting within tight space constraints.

A brake system for a piece of equipment includes a series of rotors and stators, and a first brake actuator including at least one first piston positioned within a first chamber such that pressurization of the first chamber causes the at least one first piston to operatively engage at least one of rotors or stators such that the rotors and stators are compressed together and thereby create braking torque, and may also include a second brake actuator including at least one spring operatively coupled to at least one second piston positioned within a second chamber such that depressurization of the second chamber causes the at least one second piston to operatively engage at least one of the rotors or stators such that the pluralities of rotors and stators are compressed together and thereby create braking torque.

A brake system for a piece of equipment includes a series of rotors and stators, and a first brake actuator including at least one first piston positioned within a first chamber such that pressurization of the first chamber causes the at least one first piston to operatively engage at least one of rotors or stators such that the rotors and stators are compressed together and thereby create braking torque, and may also include a second brake actuator including at least one spring operatively coupled to at least one second piston positioned within a second chamber such that depressurization of the second chamber causes the at least one second piston to operatively engage at least one of the rotors or stators such that the pluralities of rotors and stators are compressed together and thereby create braking torque.

An input device includes a brake applying unit configured to apply a braking force to a rotating body and a torque applying unit configured to apply a driving torque to the rotating body. The brake applying unit includes a rotary plate rotatable together with the rotating body, magnetic viscous fluid disposed in a gap between a fixed portion and the rotary plate, and a brake applying coil configured to apply a magnetic field to the magnetic viscous fluid. The torque applying unit includes a stator and a rotor. One of the stator and the rotor includes a magnet and the other includes torque applying coils inducing magnetic fields for generating the driving torque. A controller is provided to control currents applied to the brake applying coil and the torque applying coils. The torque applying unit is disposed to surround an outer periphery of the brake applying unit.

Outer plates have a doughnut-like disk shape and are attached to the inner circumferential surface of a case member. On the other hand, inner plates have a substantially arc shape and are swingably supported about a position at a distance from the center of rotation of a shaft. The inner plates are held at a first position, at which the interlocking area between the outer plates and the inner plates is small, by a tension coil spring when the relative rotational speed between the case member and the shaft is small, and, when the relative rotational speed between the case member and the shaft exceeds a predetermined value are pivotally moved toward the outer plates by the shearing force of a viscous fluid and held at a second position at which the interlocking area between the movable plates and the first plates is large.

Outer plates have a doughnut-like disk shape and are attached to the inner circumferential surface of a case member. On the other hand, inner plates have a substantially arc shape and are swingably supported about a position at a distance from the center of rotation of a shaft. The inner plates are held at a first position, at which the interlocking area between the outer plates and the inner plates is small, by a tension coil spring when the relative rotational speed between the case member and the shaft is small, and, when the relative rotational speed between the case member and the shaft exceeds a predetermined value are pivotally moved toward the outer plates by the shearing force of a viscous fluid and held at a second position at which the interlocking area between the movable plates and the first plates is large.

A brake system for a piece of equipment includes a series of rotors and stators, and a first brake actuator including at least one first piston positioned within a first chamber such that pressurization of the first chamber causes the at least one first piston to operatively engage at least one of rotors or stators such that the rotors and stators are compressed together and thereby create braking torque, and may also include a second brake actuator including at least one spring operatively coupled to at least one second piston positioned within a second chamber such that depressurization of the second chamber causes the at least one second piston to operatively engage at least one of the rotors or stators such that the pluralities of rotors and stators are compressed together and thereby create braking torque.

The invention relates to a brake system (100) for braking a rotation shaft (1), characterised in that it comprises: at least one piston (4), actuated by means of an electric linear actuator (3), able to move between a retracted release position and a final extended braking position; a casing (6) adapted to rotate integrally with the rotation shaft, with a cavity closed by a perpendicular cover (5), provided with at least one opening in which the piston (4) is fitted, and the piston (4) having the ability to move forwards into the closed cavity and move backwards, and a filling occupying the closed cavity, rotating with the casing, consisting of a dispersion (7) or amalgam formed by a powdery or granular product with a lubricating agent.