A rotation device according to an embodiment includes a first gear, a second gear, and an energizing part. The first gear includes a toothless part and is connected with a rotation driving source. The toothless part is obtained by cutting a part of continuous teeth of the first gear. The second gear is arranged to be able to be engaged with the first gear and is rotated, when engaged with the first gear, in a predetermined direction by a rotation of the rotation driving source in one direction. The energizing part energizes the second gear in a direction reverse to the predetermined direction when the second gear is in a free state in which an engagement of the second gear with the first gear is released by the toothless part.

A rotation device according to an embodiment includes a first gear, a second gear, and an energizing part. The first gear includes a toothless part and is connected with a rotation driving source. The toothless part is obtained by cutting a part of continuous teeth of the first gear. The second gear is arranged to be able to be engaged with the first gear and is rotated, when engaged with the first gear, in a predetermined direction by a rotation of the rotation driving source in one direction. The energizing part energizes the second gear in a direction reverse to the predetermined direction when the second gear is in a free state in which an engagement of the second gear with the first gear is released by the toothless part.

Self-winding power generating device, system, and method are disclosed. The device includes a mechanical winding knob for receiving mechanical energy from a downhole environment, a gear train including a plurality of gears engaged with each other, wherein a first gear in the gear train is operatively connected to the mechanical winding knob, and configured to receive mechanical energy from the mechanical winding knob and transfer the mechanical energy to a second gear in the gear train, a spiral spring attached to one of the gears in the gear train, the spiral spring configured to self-wind and store the mechanical energy upon receiving the mechanical energy from the first gear, and a power generation unit configured to receive the mechanical energy from a last of the plurality of gears and convert the mechanical energy into electrical energy.

Self-winding power generating device, system, and method are disclosed. The device includes a mechanical winding knob for receiving mechanical energy from a downhole environment, a gear train including a plurality of gears engaged with each other, wherein a first gear in the gear train is operatively connected to the mechanical winding knob, and configured to receive mechanical energy from the mechanical winding knob and transfer the mechanical energy to a second gear in the gear train, a spiral spring attached to one of the gears in the gear train, the spiral spring configured to self-wind and store the mechanical energy upon receiving the mechanical energy from the first gear, and a power generation unit configured to receive the mechanical energy from a last of the plurality of gears and convert the mechanical energy into electrical energy.

A locking module of an arming system including accumulation device, the module including a lever, second end including a bearing surface, the accumulation device exerting a thrust force on the first end when it is in the armed state; a lock element intended to adopt a first position to oppose the thrust force and a second position to stop opposing the thrust force; the module being characterized in that a shoe fixed to the lever is interposed between the bearing surface and the contact surface when the bearing surface is bearing against the contact surface, the width of the surface of the shoe in contact with the contact surface being greater than the width of the bearing surface.

A mechatronic transmission for transmitting a torque from the drive shaft that can be supported axially on a shaft to an output shaft, the rotational speeds of which can have an arbitrary and variable ratio (stepless transmission). The transmission includes a coupling gear and a torsion spring, with the coupling gear rotatably mounted on the same shaft and connected to the output shaft by the torsion spring, and having a first coupling for producing and cancelling a rotationally fixed, planar, force-fitting first coupling between the drive shaft and the coupling gear. The transmission comprises a supporting device which is rotatable having a fixed transmission ratio of 1:X relative to the output shaft, where X can be any real number between approximately 10 and 1, and a second coupling for producing and cancelling a rotationally fixed, force-fitting second coupling between the supporting device and the coupling gear.

A mechatronic transmission for transmitting a torque from the drive shaft that can be supported axially on a shaft to an output shaft, the rotational speeds of which can have an arbitrary and variable ratio (stepless transmission). The transmission includes a coupling gear and a torsion spring, with the coupling gear rotatably mounted on the same shaft and connected to the output shaft by the torsion spring, and having a first coupling for producing and cancelling a rotationally fixed, planar, force-fitting first coupling between the drive shaft and the coupling gear. The transmission comprises a supporting device which is rotatable having a fixed transmission ratio of 1:X relative to the output shaft, where X can be any real number between approximately 10 and 1, and a second coupling for producing and cancelling a rotationally fixed, force-fitting second coupling between the supporting device and the coupling gear.

A portion of ankle movement can be harnessed into stored energy that can be released for various purposes, such as to assist in movement or to charge a battery. This harnessing can be achieved in various manners. In one example manner, an offset pulley component can transfer ankle movement to a generator in a shoe insole. In another example manner, a slider can cause a brace arch to match an ankle arch such that the movement is appropriately harnessed.

A footwear system can employ a brake and/or a clutch, such as a one-way clutch, to convert human motion into usable electricity. The brake and one-way clutch can be used together, such as on opposite ends of a spring. During a storage phase, the brake can be engaged and the one-way clutch disengaged so the spring stores an energy. After the storage phase, the brake can be removed to initiate the release phase since the brake is not stopping the spring, but the one-way clutch allows the stored energy to be released.

A wearable system, such as a footwear system, can employ a generator. The generator can be powered by human movement, such as movement of knee as a person walks or runs. When the knee resets, it can be desirable to have a relatively equal gear ratio to achieve near natural movement. Conversely, it can be desirable to have a high gear ratio when the knee pushes off to achieve high generator rotation to produce a high amount of power. This can be achieved with employment of a wearable planetary gear set configuration In practicing this wearable planetary gear set, torque can be provided from the source (e.g. human ankle joint) when power negative and not at other times during a movement cycle, meaning energy can be harvested from the walking motion without inducing additional burden to the device wearer.