A power transfer device for a fire door operator having a pair of drive gears includes a bridge gear box having a drive shaft suitable for being coupled to an external drive. An idle spur gear is fixed to the drive shaft. A pair of spur gears are coupled to the idle spur gear to rotate in response to rotations of the idle spur gear. Spur gear shafts are coupled to the spur gears and arranged to be coupled to the drive gears of the operator so that rotation of the drive shaft by an external drive is translated to simultaneous rotations of the drive gears of the operator.

The present invention relates to a gate with a gate panel, comprising several gate panel sections which are hingedly coupled to each other by way of hinges, where a hinge comprises two hinge panels of adjacent gate panel sections, at least one elongate drive means which is connected to at least one gate panel section, and at least one guide means which is suitable to guide the gate panel during its motion. In order to optimize the gate with regard to its installation space, in particular in the width and depth direction, and to ensure simple and inexpensive yet at the same time still reliable operation of the gate, it is proposed to arrange the elongated drive means at least in sections received in the gate panel section.

The present invention relates to a gate with a gate panel, comprising several gate panel sections which are hingedly coupled to each other by way of hinges, where a hinge comprises two hinge panels of adjacent gate panel sections, at least one elongate drive means which is connected to at least one gate panel section, and at least one guide means which is suitable to guide the gate panel during its motion. In order to optimize the gate with regard to its installation space, in particular in the width and depth direction, and to ensure simple and inexpensive yet at the same time still reliable operation of the gate, it is proposed to arrange the elongated drive means at least in sections received in the gate panel section.

A system for detecting broken springs in overhead doors having automatic door openers includes an automatic door opener having a motor, a sensor configured to monitor performance of the motor in the door opener, and a processor in communication with the sensor. The processor is configured to compare the motor performance with a predetermined threshold level and send an alert when motor performance exceeds the predetermined threshold level.

Embodiments of the present disclosure are directed to a motor unit for an overhead door opener. The motor unit comprises a motor and transmission components configured to transmit power from the motor to a shaft of an overhead door opener. The motor unit also includes a case having one or more vertical panels. The case houses the motor and the transmission components. The motor unit also includes guide bearings on an edge of the vertical panels that accommodate a shaft of an overhead door with the case supported by the shaft. The transmission components comprise a shaft-engaging member configured to be secured around the shaft by affixing the shaft-engaging member to the shaft. The transmission components transmit power from the motor to the shaft of the overhead door.

Embodiments of the present disclosure are directed to a motor unit for an overhead door opener. The motor unit comprises a motor and transmission components configured to transmit power from the motor to a shaft of an overhead door opener. The motor unit also includes a case having one or more vertical panels. The case houses the motor and the transmission components. The motor unit also includes guide bearings on an edge of the vertical panels that accommodate a shaft of an overhead door with the case supported by the shaft. The transmission components comprise a shaft-engaging member configured to be secured around the shaft by affixing the shaft-engaging member to the shaft. The transmission components transmit power from the motor to the shaft of the overhead door.

This invention is about an improved garage door opener system, with design features for preventing garage door break-in from outside of the garage using an object such as a hanger. Typically, a person pulls down a cord connected to a release handle to release emergency release of a garage door opener, allowing the door to be manually open or closed. An unauthorized person may attempt to pull down the cord using a hanger from outside the garage or to pull or push down the release handle, to open the door from outside and gain unauthorized entrance. The improved garage door opener system provides a mechanism to reverse the pulling direction of the cord and also protects release handle from being accessed from outside the garage, for increased security.

This invention is about an improved garage door opener system, with design features for preventing garage door break-in from outside of the garage using an object such as a hanger. Typically, a person pulls down a cord connected to a release handle to release emergency release of a garage door opener, allowing the door to be manually open or closed. An unauthorized person may attempt to pull down the cord using a hanger from outside the garage or to pull or push down the release handle, to open the door from outside and gain unauthorized entrance. The improved garage door opener system provides a mechanism to reverse the pulling direction of the cord and also protects release handle from being accessed from outside the garage, for increased security.

A merchandise container comprises a body having a longitudinal axis, which comprises a floor, a roof and a side wall, each comprising an exterior face and an interior face, and a plurality of bays in the side walls. A plurality of bay doors adapted to controllably closing the bays. A door opening system comprising a plurality of door axles each driving individually one of the plurality of bay doors between a closed position and an open position; an intermediate axle in driving arrangement with the plurality of door axles; and a motor connected in driving arrangement with the intermediate axle comprising a driving axle controls the position of the bay doors by driving the intermediate axle which in turn drives the plurality of door axles to move the plurality of bay doors between the closed position to the open position.

A merchandise container comprises a body having a longitudinal axis, which comprises a floor, a roof and a side wall, each comprising an exterior face and an interior face, and a plurality of bays in the side walls. A plurality of bay doors adapted to controllably closing the bays. A door opening system comprising a plurality of door axles each driving individually one of the plurality of bay doors between a closed position and an open position; an intermediate axle in driving arrangement with the plurality of door axles; and a motor connected in driving arrangement with the intermediate axle comprising a driving axle controls the position of the bay doors by driving the intermediate axle which in turn drives the plurality of door axles to move the plurality of bay doors between the closed position to the open position.