Disclosed are front entry cabs, and power machines with front entry cabs, having a door that is moveable between opened and closed positions. In the opened position, the door is positioned within an operator compartment of the cab above the operator seat and below a top of the cab. A linkage system defines the travel path of the door between closed and opened positions. The linkage system is configured to minimize interference with operator visibility.

Systems, methods, and apparatus for managing and controlling network-enabled movable barrier operators is provided. A method for managing network-enabled movable barrier operator includes receiving a user account identifier and a movable barrier operator identifier from a user device, providing an instruction to perform a specified action with a movable barrier operator associated with the movable barrier operator identifier to the user device, determining a registration condition is met upon detecting that the specified action has been performed, and, upon the registration condition being met, associating the movable barrier operator identifier with the user account identifier to allow a user account associated with the user account identifier to control the movable barrier operator over a network.

Systems, methods, and apparatus for managing and controlling network-enabled movable barrier operators is provided. A method for managing network-enabled movable barrier operator includes receiving a user account identifier and a movable barrier operator identifier from a user device, providing an instruction to perform a specified action with a movable barrier operator associated with the movable barrier operator identifier to the user device, determining a registration condition is met upon detecting that the specified action has been performed, and, upon the registration condition being met, associating the movable barrier operator identifier with the user account identifier to allow a user account associated with the user account identifier to control the movable barrier operator over a network.

Disclosed are front entry cabs, and power machines with front entry cabs, having a door that is moveable between opened and closed positions. In the opened position, the door is positioned within an operator compartment of the cab above the operator seat and below a top of the cab. A linkage system defines the travel path of the door between closed and opened positions. The linkage system is configured to minimize interference with operator visibility.

Systems, methods, and apparatus for managing and controlling network-enabled movable barrier operators is provided. A method for managing network-enabled movable barrier operator includes receiving a user account identifier and a movable barrier operator identifier from a user device, providing an instruction to perform a specified action with a movable barrier operator associated with the movable barrier operator identifier to the user device, determining a registration condition is met upon detecting that the specified action has been performed, and, upon the registration condition being met, associating the movable barrier operator identifier with the user account identifier to allow a user account associated with the user account identifier to control the movable barrier operator over a network.

Systems, methods, and apparatus for managing and controlling network-enabled movable barrier operators is provided. A method for managing network-enabled movable barrier operator includes receiving a user account identifier and a movable barrier operator identifier from a user device, providing an instruction to perform a specified action with a movable barrier operator associated with the movable barrier operator identifier to the user device, determining a registration condition is met upon detecting that the specified action has been performed, and, upon the registration condition being met, associating the movable barrier operator identifier with the user account identifier to allow a user account associated with the user account identifier to control the movable barrier operator over a network.

The present invention is a door opener operable to open doors of various weights, heights and widths, comprising cables attached to the door and further attached to an operation unit. The operation unit incorporates a telescoping section driven to extend and compress by the function of a fluid pump. The telescoping section comprises two or more telescoping portions. The extension of at least one telescoping portion creates tension in the cables and causes the door to be moved from a closed or semi-closed position to an open or semi-open position. The compression of at least one telescoping portion reduces tension in a constant or near-constant manner so that the door is caused to move from an open or semi-open position to a closed position or semi-closed position. The pump only requires power while at least one telescoping portion is extending and therefore power is only required while the door is being moved towards an open position.

The present invention is a door opener operable to open doors of various weights, heights and widths, comprising cables attached to the door and further attached to an operation unit. The operation unit incorporates a telescoping section driven to extend and compress by the function of a fluid pump. The telescoping section comprises two or more telescoping portions. The extension of at least one telescoping portion creates tension in the cables and causes the door to be moved from a closed or semi-closed position to an open or semi-open position. The compression of at least one telescoping portion reduces tension in a constant or near-constant manner so that the door is caused to move from an open or semi-open position to a closed position or semi-closed position. The pump only requires power while at least one telescoping portion is extending and therefore power is only required while the door is being moved towards an open position.

A shutter device, used to open and close an opening provided in a wall with a conveyor belt extending through the opening, includes a pair of posts, an upper shutter and a lower shutter that are movable up and down between the pair of posts, and a lifting-and-lowering mechanism that includes a feed screw having an upper external thread and a lower external thread that are twisted in opposite directions; an upper nut; and a lower nut so as to cause the upper shutter and the lower shutter to move up and down simultaneously.

A shutter device, used to open and close an opening provided in a wall with a conveyor belt extending through the opening, includes a pair of posts, an upper shutter and a lower shutter that are movable up and down between the pair of posts, and a lifting-and-lowering mechanism that includes a feed screw having an upper external thread and a lower external thread that are twisted in opposite directions; an upper nut; and a lower nut so as to cause the upper shutter and the lower shutter to move up and down simultaneously.