Disclosed are alternate embodiments of various components of a barrier operator system. and methods of operation, including of the mechanical drive subsystem with segmented and self-locking rail unit, rail mounting supports, belt and chain drive tensioning, and drive assembly carriage and interface; the electronics and software routines for controlled operation of the various barrier operator functions; wall console communications with the barrier operator; encryption and decryption of access codes; establishment and monitoring of travel limits and barrier speed and force profiles; thermal protection of barrier operator drive motors; and establishment and control of communications from the barrier operator to accessories by way of a wireless adapter.

A tension applying apparatus includes a tension applying member applying a tensile force to a drive cable by being pressed against the drive cable, a biasing member generating a biasing force for pressing the tension applying member against the drive cable, a holding member including a guide portion which restricts a moving direction of the tension applying member and a housing member housing the tension applying member and the holding member. The holding member is configured to change the moving direction of the tension applying member which is guided by the guide portion in a state where the holding member including a rotation shaft is housed within the housing member. The housing member includes a holding structure holding the holding member at a position to which the holding member rotates in a direction where a pressing angle of the tension applying member relative to the drive cable becomes shallow.

Disclosed are alternate embodiments of various components of a barrier operator system. and methods of operation, including of the mechanical drive subsystem with segmented and self-locking rail unit, rail mounting supports, belt and chain drive tensioning, and drive assembly carriage and interface; the electronics and software routines for controlled operation of the various barrier operator functions; wall console communications with the barrier operator; encryption and decryption of access codes; establishment and monitoring of travel limits and barrier speed and force profiles; thermal protection of barrier operator drive motors; and establishment and control of communications from the barrier operator to accessories by way of a wireless adapter.

A thermally conductive composite element is particularly suited for use in a surface heating system or in a surface cooling system. The composite element has at least one main part which contains expanded graphite and at least one flat textile structure disposed on one face of the main part. The textile structure is connected to the face of the main part by an inorganic adhesive.

A motor vehicle drive assembly which is equipped with a drive element and an abutment, and also with at least one spring between the drive element and the abutment. In addition, there is at least one drive element sensor which, depending on the application of force by the drive element counter to the force of the spring and an associated relative movement between the drive element and the abutment, transmits sensor signals to a control unites. According to the invention, the drive element sensor, depending on the application of force by the drive element, generates different force-dependent, sliding sensor signals which are evaluated by the control unites, for example to drive an actuating element.

A device for closing off an aperture formed in a structure, comprising: a fixed portion, in which an opening is defined, and at least one sliding movable panel guided along two guide rails between a closing-off position, closing said opening, and at least one opening position, each of said guide rails carrying at least one shutter guided in translation in said rail, actuation means acting on one of said shutters to ensure a translational movement of these in said guide rails and the passage of the movable panel from said closing-off position into said at least one sliding position, and vice versa, and two synchronisation cables ensuring a synchronisation of the movement of said shutters.

Each shutter carries a movable slider movable relative to said shutter and receiving one end of each of said synchronisation cables, so that the movement of said ends of said synchronisation cables is substantially parallel to the plane of said movable panel during the movement of said shutters ensuring the passage of said movable panel from said closing-off position into said at least one sliding position, and vice versa.

A belt tensioning system (170) for tensioning a belt (171) of a belt drive system (970) for transferring torque from a drive unit (112) of a door operating system (100) to a sliding door leaf (101) of a sliding door assembly (200), the belt tensioning system comprising a belt wheel (176) connectable to the belt (171) for torque transfer between said belt wheel (176) and an additional belt wheel (175) of the belt drive system (970); a belt wheel guiding arrangement (330), the belt wheel (176) being movably connected to said belt wheel guiding arrangement (330); and a belt tensioning arrangement (470) operatively connecting the belt wheel (176) and the belt wheel guiding arrangement (330) for adjusting the position of the belt wheel (176) relative the belt wheel guiding arrangement (330).

Disclosed are alternate embodiments of various components of a barrier operator system. and methods of operation, including of the mechanical drive subsystem with segmented and self-locking rail unit, rail mounting supports, belt and chain drive tensioning, and drive assembly carriage and interface; the electronics and software routines for controlled operation of the various barrier operator functions; wall console communications with the barrier operator; encryption and decryption of access codes; establishment and monitoring of travel limits and barrier speed and force profiles; thermal protection of barrier operator drive motors; and establishment and control of communications from the barrier operator to accessories by way of a wireless adapter.

A sensor apparatus for a movable barrier system having a rotatable drum and an elongate member that winds up on and pays out from an external surface of the rotatable drum. The sensor apparatus includes a base portion, a sensing portion, and a controller. The sensing portion senses a first spaced apart proximity of the elongate member relative to the sensing portion and a second spaced apart proximity of the elongate member relative to the sensing portion. The controller detects a change in the proximity of the elongate member relative to the sensing portion without the elongate member contacting the sensing portion.

A side sliding door includes: a door panel; a door frame; a transmission assembly, including two sets of synchronous tape modules, the two sets of synchronous tape modules being arranged in parallel one above the other on the door frame; a synchronous drive module, the synchronous motion of the two sets of synchronous tape modules driving the door panel to perform a flat opening action in the horizontal direction. The synchronous tape modules each include a driving belt wheel, a driven belt wheel and a synchronous belt; the synchronous drive module includes a drive member, a driving shaft and a driven shaft; the two ends of the driving shaft are respectively connected to the two driving belt wheels, the two ends of the driven shaft are respectively connected to the two driven belt wheels, and the drive member drives the driving shaft to rotate.