The present invention relates to a hydraulic door drive for a lifting door (1) that opens, in particular, vertically, comprising at least one hydraulic motor (6), adapted and configured to drive a door curtain (2) or to be at least concomitantly driven by the door curtain (2), at least one hydraulic unit (10) for supplying the hydraulic door drive (5) with pressurized hydraulic fluid (13; 13a), characterized by a pressure accumulator (22), wherein a) potential energy of the door curtain (2), which is released when the latter is closed, can be stored in the form of pressure energy in the pressure accumulator (22), and/or b) the pressure accumulator (22) can be loaded with pressure energy by means of the at least one hydraulic unit (10), wherein c) pressure energy stored in the pressure accumulator (22) can be discharged to the hydraulic motor (6) in order to at least open and/or at least close the door curtain (2).

The present invention relates to a hydraulic door drive for a lifting door (1) that opens, in particular, vertically, comprising at least one hydraulic motor (6), adapted and configured to drive a door curtain (2) or to be at least concomitantly driven by the door curtain (2), at least one hydraulic unit (10) for supplying the hydraulic door drive (5) with pressurized hydraulic fluid (13; 13a), characterized by a pressure accumulator (22), wherein a) potential energy of the door curtain (2), which is released when the latter is closed, can be stored in the form of pressure energy in the pressure accumulator (22), and/or b) the pressure accumulator (22) can be loaded with pressure energy by means of the at least one hydraulic unit (10), wherein c) pressure energy stored in the pressure accumulator (22) can be discharged to the hydraulic motor (6) in order to at least open and/or at least close the door curtain (2).

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, in the event that the registration condition is 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, in the event that the registration condition is 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.

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.

The present invention relates to a door operation system (1) for opening and closing an opening (2) comprising: a door frame (3) comprising a first frame section (4) at a first side (5) of the opening (2) and a second frame section (6) at a second side (7) of the opening (2); a door (8) arranged to be moved between a closed (C) and an open (0) position, the door (8) being movably connected to the door frame (3); a drive unit (10) mounted on the door (8), the drive unit (10) comprising at least one motor (11) arranged to move the door (8) from the closed (C) position to the open (0) position and vice versa, and an elongated transmission member (19) extending along at least one of the first side (5) and second side (7) of the opening (2), wherein the drive unit (10) further comprises a driven transmission member (18) in driving connection with the motor (11), the driven transmission member (18) being movably connected to the elongated transmission member (19) and arranged to interplay with said elongated transmission member (19) for driving the driven transmission member (18) along said elongated transmission member (19) by the elongated transmission member (19) at least partially wrapping around the driven transmission member (18), wherein at least one guide member (92) mounted to the door (8) is arranged to interplay with the elongated transmission member (19) for guiding the elongated transmission member (19) into contact with the driven transmission member (18), wherein the least one guide member (92) comprises a sliding surface (101) on which the elongated transmission member (19) is configured to slide, and wherein the sliding surface (101) has a curvature, which is configured to urge the elongated transmission member (19) to flex and follow the curvature.

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, in the event that the registration condition is 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, in the event that the registration condition is 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.