An overhead door system is disclosed, which includes a first track and a second track mounted on opposite sides of an opening. Each track has a vertical portion, a transition portion, and a horizontal portion, with the transition portion being between the vertical portion and the horizontal portion. An overhead door engages the first and second tracks on opposite sides of the overhead door and is movable along the first and second tracks between a closed, vertical position and a raised, horizontal position. A motor unit has a motor that is mounted above the horizontal portions of the first and second tracks. A rail is parallel to and disposed between the horizontal portions of the first and second tracks. The rail carries a carriage configured to move in a first direction to raise the overhead door and in a second, opposite direction to lower the overhead door. A connecting member is pivotally attached at one end near a top edge of the overhead door and attached at an opposite end to the carriage. A one-way bearing is disposed between the motor and the carriage. The motor, as it rotates in a first rotational direction, applies force to the carriage to move the carriage in the first direction to raise the overhead door. Nevertheless, owing to the one-way bearing, the motor, as it rotates in a second, opposite rotational direction, does not apply force to the carriage to move the carriage in the second direction to lower the overhead door. A kit to retrofit an overhead door system with a one-way bearing is also disclosed.

A mechanism for opening and closing an overhead door includes a drive loop coupled to the overhead door, a motor with a drive shaft and a drive wheel for driving the drive loop. A one-way bearing couples the drive shaft to the drive wheel, which one-way bearing is configured to transmit torque from the motor to the drive wheel, as the motor rotates the drive shaft in a first rotational direction to raise the overhead door, and configured so that torque is not transmitted to the drive wheel as the motor rotates the drive shaft in a second rotational direction opposite the first rotational direction. As a result, the motor applies torque through the one-way bearing to raise the overhead door and to support the weight of the overhead door while lowering the overhead door.

A satellite dispenser is disclosed. In various embodiments, a satellite dispenser as disclosed herein includes a dispenser body defining an interior cavity configured to receive a payload; and a composite guide rail comprising a groove configured to receive at least a portion of a payload, the composite guide rail having an orientation that substantially aligns a longitudinal axis of the groove with an ejection axis of the dispenser.

A shaft-mounted overhead door operator is disclosed having a motor, a torque transfer component such as a gear train, and a clutch that is axially movable to engage or disengage the clutch. While the door operator has power, the clutch is engaged to ensure door operator can raise, lower, and stop the overhead door as directed from a remote control. The clutch can be released in the event of a loss of power or by direction from the remote control in which case the clutch releases the shaft of the overhead door. The shaft-mounted overhead door is small, having a width no greater than three times the diameter of the shaft to which it is mounted.

Door with automatic opening and closing, including a door panel, a support column fixed to the door panel and suitable for rotating around its longitudinal axis in such a way to move the door panel between two end-of-travel positions, an electric motor for actuating the support column and a drive unit for transmitting the motion from the electric motor to the support column. The drive unit has a first drive element connected to the electric motor and a second drive element connected to the support column, wherein the drive unit includes a clutch unit that is interposed between the first drive element and the electric motor or between the second drive element and the support column. The door also has an automatic lock that completes the automation of the door by detectors.

An opening/closing direction restriction mechanism for a manual shutter device and an opening/closing direction restriction mechanism for a suspended sliding door device This opening/closing direction restriction mechanism is provided with: a flange fixedly mounted on a fixed shaft; a bracket which is loosely fitted to the fixed shaft and can be integrally rotated with a winding member; and a two-way clutch which can be switched between a reverse rotation inhibited state in which the revolution of a planetary external gear along a winding direction of the winding member is allowed and the revolution of the planetary external gear along an unwinding direction is inhibited, and a forward rotation inhibited state in which the revolution of the planetary external gear along the winding direction of the winding member is inhibited and the revolution of the planetary external gear along the unwinding direction is allowed.

An exemplary method relates to operating a door closer assembly including a closer body, a pinion rotatably mounted to the closer body, a motor including a motor shaft, and a bidirectional clutch connected between the pinion and the motor shaft. The method generally involves permitting, by the clutch, rotation of the pinion in each of a first direction and a second direction without transmitting rotation of the pinion in either direction to the motor shaft; sensing, with a sensor, a rotational position of the pinion; comparing, by a controller, the rotational position of the pinion with a desired rotational position; based upon the comparing, driving the motor to rotate the motor shaft; and by the clutch, coupling the motor shaft with the pinion in response to rotation of the motor shaft, thereby transmitting torque from the motor shaft to the pinion and urging the pinion toward the desired rotational position.

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 furniture drive includes a carrier and an actuating arm assembly arranged on the carrier and including a movably-supported actuating arm. The furniture drive also includes a spring device for applying a force to the actuating arm assembly, the spring device being connected to the actuating arm assembly via an engagement location, a transmission mechanism for transmitting a force of the spring device to the actuating arm assembly, and an adjustment device including a rotatably-supported adjustment element. A relative position of the engagement location can be adjusted by a rotation of the adjustment element. The furniture drive further includes an overload safety device configured to couple the adjustment element with the transmission mechanism upon rotation of the adjustment element with torque below a predetermined torque, and to decouple the adjustment element from the transmission mechanism upon rotation of the adjustment element with torque above the predetermined torque.

A method for controlling a power tailgate in a vehicle power tailgate system includes steps of controlling operation of a motor to attempt to lower or raise a tailgate operably connected to the motor, determining that a clutch interposed between the motor and the tailgate (and operably connected to the motor and the tailgate) slipped by at least a predetermined slip amount during operation of the motor to attempt to lower or raise the tailgate and, responsive to the determination that the clutch slipped by at least the predetermined slip amount, generating an alert indicating a need for manual reset of the tailgate.