A rolling device having a bearing housing accommodating a wheel axle carrying a wheel element, axle support members rotatably accommodated in the bearing housing and supporting the wheel axle, end portions of the wheel axle being connected to the axle support members in an eccentric position displaced from the rotational axis/4 line of the axle support members, a drive wheel connected to one of the axle support members for the axle support member to rotate following the rotation of the drive wheel, a first drive motor having a spindle engaged with the drive wheel to rotate the drive wheel and thereby the axle support member relative to the bearing housing, to displace the wheel element by eccentric movement between an extended position where at least a portion of the wheel element projects outside the bearing housing and a retracted position where the wheel element is located inside the bearing housing.

A door assembly for a restroom stall having first and second opposed side walls and a front opening includes first and second housings defining first and second inner cavities and configured to be mounted on the first and second side walls, first and second doors moveably mounted on the first and second housings, each having opposed inner and outer surfaces that are curved and being moveable along an arcing path between an open position and a closed position. In the open position, the door is retracted within the respective housing and at least partially received in the respective inner cavity, and in the closed position, the door is extended outward of the respective housing relative to the open position. In the closed positions, the first and second doors combine to obstruct the front opening, and in the open positions, the first and second doors permit passage through the front opening.

A sliding door has a brake element for braking the door leaf, an adjustment device configured to switch the brake element over from a braking position, in which the door leaf is being braked, to a release position, in which the door leaf is not being braked, and from the release position to the braking position, and a motor drive unit which is configured to cooperate with the adjustment device and to allow the brake element to be adjusted.

A system and portable device are provided for opening and closing sliding doors associated with conventional sliding doors as used in residences and businesses. The portable sliding door device attaches to a sliding door via a bracket, and moves along the same track used by the sliding door. The sliding door device can be initiated to move the sliding door to the open position through remote control, voice-activation, and proximity transmitters. The sliding door device can communicate with wireless routers and be remotely controlled and monitored by computers, netbooks and cell phones. The sliding door device has safety features, including cameras and speakers to ward off attempted break-ins.

A system and portable device are provided for opening and closing sliding doors associated with conventional sliding doors as used in residences and businesses. The portable sliding door device attaches to a sliding door via a bracket, and moves along the same track used by the sliding door. The sliding door device can be initiated to move the sliding door to the open position through remote control, voice-activation, and proximity transmitters. The sliding door device can communicate with wireless routers and be remotely controlled and monitored by computers, netbooks and cell phones. The sliding door device has safety features, including cameras and speakers to ward off attempted break-ins.

The disclosure relates to a sliding door operator system (1) for opening and closing an opening (2), comprising: a track (3) configured to be mounted at an upper part (21) of the opening (2), one or more sliding door(s) 10 slidably connected to the track (3) and comprising a door leaf (4) configured to be moved along the track (3) between an open (o) and closed (c) position, and a drive unit (5) mounted on the door leaf (4), moveably connected to the track (3) and arranged to move the door leaf (4) between the closed position (c) and the open position (o). The disclosure further relates to a drive unit (5) for moving a sliding door leaf (4) between an open and a closed position (O, C) and a control system (11) for regulating one or more sliding door (10).

To create a system for a furniture item that is electrically powered and functionally more flexible, with improved energy consumption, and independent from the mains voltage, an energy management method is proposed with the the steps of (i) generating electrical energy from the displacement of a component (C; 30) of a furniture item movable by a user, (ii) storing electrical energy thus generated in an electric accumulator (B), preferably placed onboard the furniture item.

To create a system for a furniture item that is electrically powered and functionally more flexible, with improved energy consumption, and independent from the mains voltage, an energy management method is proposed with the the steps of (i) generating electrical energy from the displacement of a component (C; 30) of a furniture item movable by a user, (ii) storing electrical energy thus generated in an electric accumulator (B), preferably placed onboard the furniture item.

The invention concerns a drive unit for moving a door relative to a door's opening. The drive unit comprises a drive motor and a wheel transmission assembly arranged for transfer of power to a drive wheel configured for engagement with a running surface for moving the door. The wheel transmission comprises a transfer wheel driven by the drive motor. A movable wheel carrier comprises a first running wheel and a second running wheel arranged in in engagement with the transfer wheel. The movable wheel carrier is arranged for displacement between a free wheel position where the first and second running wheel are arranged disengaged from the drive wheel for no power transfer to occur from the drive motor to the drive wheel, at least one running position where either of the first and second running wheel is positioned in engagement with the drive wheel for the transfer of power from the drive motor to the drive wheel.

A gate opening and closing assembly includes a mount that is coupled to a vertical member of a gate that is extendable across an entry way. A drive unit is coupled to the mount and the drive unit is actuated to rotate in a first direction or a second direction. A wheel is rotatably coupled to the drive unit to roll along the ground. The wheel is rotated in an opening direction when the drive unit rotates in the first direction to urge the gate into an open position thereby facilitating a vehicle to drive through the entry way. The wheel is rotated in a closing direction when the drive unit rotates in the second direction to urge the gate into a closed position thereby inhibiting the vehicle from driving through the entry way. A remote control is in wireless electrical communication with the drive unit. The remote control turns the drive unit on and off to open and close the gate.