A self-powered vibration mechanism is provided that can be mounted on an existing pedal shaft yet operates independent from the existing pedal. Mechanical isolation or mechanical decoupling permits transferring the vibrating energy to the foot rather than to the pedal shaft and the bicycle. In another embodiment, a full removable pedal with self-powered vibration mechanism can replace an existing pedal.

An exercise device includes a base defining an inner volume and a top supported by the base, the top defining an aperture. The exercise device further includes a force sensor configured to measure force on the top and a motor disposed within the base and below the top, the motor including a cable extendable through the aperture. The exercise deice further includes a controller communicatively coupled to each of the force sensor and the motor. The controller is adapted to actuate the motor in response to forces applied to the top as measured by the force sensor. The controller may also actuate the motor in response to one or more additional parameters related to the speed or force with which the cable is manipulated (e.g., pulled by a user).

An exercise machine comprises a user force input element, a transmission unit, an electric motor, and an electrical circuit connected to the electric motor. The user force input element is connected to the electric motor via the transmission unit such that said electric motor turns at an angular velocity which is different than the velocity or angular velocity of the user force input element. The motor runs as a generator such that when the electric motor is turned, an electrical current is developed in the electrical circuit. The electrical circuit comprises an electrical resistor, a switching element, a Pulse Width Modulation (PWM) controller, and a load reference controller.

A device includes a signaling means and a motion sensor, and logic for activating or controlling the signaling means in response to a sensed motion according to an embedded logic. The device may be used as a toy, and may be shaped like a play ball or as a handheld unit. It may be powered from a battery, either chargeable from an AC power source directly or contactless by using induction or by converting electrical energy from harvested kinetic energy. The embedded logic may activate or control the signaling means, predictably or randomly, in response to sensed acceleration magnitude or direction, such as sensing the crossing of a preset threshold or sensing the peak value. The visual means may be a numeric display for displaying a value associated with the count of the number of times the threshold has been exceeded or the peak magnitude of the acceleration sensed.

An exercise device with controllable training modes includes a base, a first exercise mechanism, a second exercise mechanism, and an operating mechanism. The first exercise mechanism has a first gear member. The second exercise mechanism has a second gear member. The operating mechanism has a third gear member. When the third gear member is at a first position, the third gear member meshes with the first gear member and the second gear member to form a linked state, so that the first exercise mechanism and the second exercise mechanism are operatively linked and coupled and swing in opposite directions. When the third gear member is at a second position, the third gear member is disengaged from either the first gear member or the second gear member or both to form a free state, so that the first exercise mechanism and the second exercise mechanism individually swing.

The present disclosure relates to a field of door/window hardware accessories, in particular to a door/window pulley, a pulley device, and a door/window. The present disclosure provides the bearing and the anti-deformation metal ring that can be in contact with the track, the anti-deformation metal ring use rigidity itself to effectively avoid generating indentation, and the door/window pulley is also difficult to be pressed to cause deformation. Moreover, the inner part of the injection molded body is filled between the bearing and the anti-deformation metal ring, which not only well transfers pressure bore by the anti-deformation metal ring when load-bearing to the bearing, but also restores the anti-deformation metal ring after slight deformation by giving an outward elastic support to the anti-deformation metal ring using elasticity of the injection molded body.

The invention relates to renewable clean energy field, discloses a fitness exercise energy acquiring method and system, the method includes steps: (1) user signs up and sign in the system; (2) the system acquires fitness exercise energy and its users related information; (3) the system alters acquired energy into usable energy form; (4) the acquired energy is used; (5) user benefit from the system settlement; the system comprises components: (1) fitness exercise energy information acquiring subsystem; (2) fitness exercise energy information server and communication network system; (3) fitness exercise energy acquiring device; (4) fitness exercise energy usable electrical current alteration subsystem; (5) fitness exercise energy output control subsystem. The present invention realize change of energy released during daily fitness exercise into usable energy, both do fitness exercise and generate clean energy, fitness exercises of human and animals will generate more than one hundred millions kWh per day, with reference to present fitness equipment, obtain energy conservation and environmental protection timeliness of fitness exercises.

A manually powered treadmill includes a frame; a first rotatable element coupled to the frame; a second rotatable element coupled to the frame; a plurality of bearings coupled to the frame; a running belt at least partly supported by the plurality of bearings, where at least a portion of the running belt defines a curved running surface; and a safety device coupled to at least one of the first rotatable element and the second rotatable element. The safety device is structured to substantially prevent rotation of the at least one of the first rotatable element and the second rotatable element in a first rotational direction and permit rotation of the at least one of the first rotatable element and the second rotatable element in a second rotational direction opposite the first rotational direction.

Embodiments of the present invention comprise a 4-wheeled resistance training device in the form of a box, wherein a user may add weights to the inside or to the top of the box to increase the resistance provided to the user. The wheels may be connected to the box by one or more threaded axles, each threaded axle existing as two or more parts. Rotation of the threaded axles may power a generator, which may power a light system comprising one or more lights. The light system may provide visual feedback to a user by changing the color and/or intensity of the one or more lights depending on multiple factors. Further embodiments of the invention may comprise a battery for storing energy generated by the generator. Embodiments of the invention may also comprise the ability to store data about a user's workout.

A device includes a signaling means and a motion sensor, and logic for activating or controlling the signaling means in response to a sensed motion according to an embedded logic. The device may be used as a toy, and may be shaped like a play ball or as a handheld unit. It may be powered from a battery, either chargeable from an AC power source directly or contactless by using induction or by converting electrical energy from harvested kinetic energy. The embedded logic may activate or control the signaling means, predictably or randomly, in response to sensed acceleration magnitude or direction, such as sensing the crossing of a preset threshold or sensing the peak value. The visual means may be a numeric display for displaying a value associated with the count of the number of times the threshold has been exceeded or the peak magnitude of the acceleration sensed.