A retrofit unit is disclosed, adapted to be attached to a door as part of a door closer apparatus, the door closer apparatus being adapted to selectively prevent or facilitate movement of a door relative to its associated door frame, the retrofit unit comprising energy harvesting means adapted to convert energy harvested into electrical energy, the retrofit unit further having a first energy storage means, control means adapted to control the door closer unit, one or more sensors adapted to detect one or more environmental state, and a communication means adapted to transmit and receive information wirelessly to and from a remote base station and adapted to transmit and receive information wirelessly to and from a further retrofit unit. A door-integrated unit is also disclosed, as well as a fire safety system having a plurality of units and one or more base stations.

A door operator 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) and a door (8) arranged to be moved between an open (O) and closed (C) position. The door (8) is connected to the door frame (3). A drive unit (10) mounted on the door (8), whereby the drive unit (10) is moveably connected to first frame section (4) and the drive unit (10) is moveably connected to the second frame section (6), the drive unit (10) comprising at least one motor (11) connected to at least one energy storage device (12) arranged to power the at least one motor (11), the drive unit (10) being arranged to move the door (8) from the closed position (C) to the open position (O). The door operator system (1) further comprises an energy transmitting device (13, 14) disposed in close proximity to the door (8) and an energy receiving device (81) mounted on the door (8), whereby the energy transmitting device (13, 14) is configured to wirelessly transmit energy to the energy receiving device (81) mounted to the door (8), whereby the energy receiving device (81) is operatively connected to the at least one energy storage device (12) for charging said energy storage device (12).

A power-supply control system includes: a lock control unit that controls a door-lock device; and a travel control unit that controls a travel operating unit related to either driving the power of the vehicle, braking the vehicle, or steering the vehicle. A lock high-level control unit, in a state in which supply of electric power to the lock control unit, the travel operating unit, and the travel control unit is stopped, while the first trigger signal is not outputted from an operation unit, makes electric power not be supplied from a power supply to the lock control unit, the travel operating unit, and the travel control unit, and when the first trigger signal is outputted, starts to supply electric power from the power supply to the lock control unit and the door-lock device and makes the lock control unit execute control to unlock the door-lock device.

A system for operating an overhead door using a battery and a low voltage power supply are disclosed. A battery is connected to a standard power outlet and charges from a power adaptor that converts the power down to a reduced voltage and provides the reduced power to the battery. The battery provides the principal power required to operate the overhead door opener. With the preferred embodiment, there is no need for an additional, higher-rated outlet near the overhead door opener, or a long high-voltage cable in the garage.

The present invention relates to a sectional door operator 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 an open (0) and closed (C) position and comprising a plurality of horizontal and interconnected sections (9) connected to the door frame (3) at least a drive unit (10) mounted on a first section (9) of the plurality of sections (9), wherein the drive unit (10) is moveably connected to the first frame section (4) and the drive unit (10) is moveably connected to the second frame section (6), the drive unit (10) comprise at least one motor (11) connected to at least one battery (12) arranged to power the at least one motor (11), and the drive unit (10) is arranged to move the door (8) from the closed position (C) to the open position (0).

Release mechanism (12) for an energy harvesting arrangement (10) for an electronic locking system (78), the release mechanism (12) comprising a drive device (18); a harvesting elastic element (30); at least one magnet (36); an input device (38); and an engaging profile (52); wherein the input device (38) is arranged to engage the drive device (18) by means of a magnetic force such that the drive device (18) can be displaced from a starting position (32) by movement of the input device (38) along a harvesting path (58); and wherein the engaging profile (52) is arranged to engage the drive device (18) at an engaging position (60) of the drive device (18), such that further movement of the input device (38) along the harvesting path (58) causes a relative inclination between a drive device surface (26) and a input device surface (42). An energy harvesting arrangement (10) and an electronic locking system (78) are also provided.

A system for fixing and/or emergency opening of a leaf of a door, a window or other closure comprises a drive having at least one mechanical energy storage device, at least one electric motor having a motor shaft operatively connected to the leaf, and control electronics for controlling the electric motor. The electric motor can be actuated by the control electronics both for damping of the leaf movements and for fixing of the leaf against a force of the mechanical storage device and/or for electric motor-driven emergency opening of the leaf.

A braking device for a moveable door leaf includes an electrical brake motor operated as a generator. The motor shaft of which is rotatable by a movement of the door leaf and which can be controlled for regulating the closing speed of the door leaf by an electronic evaluation and control unit, which is at least partially provided with electrical energy by an electric motor operated as a generator and/or by an additional generator unit. The electronic evaluation and control unit is operable in a sleep mode and is cyclically displaceable into a waking state depending on the closing speed of the door leaf. A door closer with a mechanical energy storage and a braking device is also disclosed.

Certain embodiments relate to a hold-open assembly for a door closer including a pinion operable to rotate in a closing direction and an opposite opening direction. The hold-open assembly includes a ratchet wheel, a pawl, a controller, and a driver. The ratchet wheel is structured to be mounted to the pinion for joint rotation therewith. The pawl has an engaged position in which the pawl prevents rotation of the ratchet wheel in the closing direction, and has a disengaged position in which the pawl permits rotation of the ratchet wheel in both the opening direction and the closing direction. The controller is operable to determine a release condition and is configured to transmit a release signal in response to determining the release condition. The driver is configured to move the pawl from the engaged position to the disengaged position in response to the release signal.

An apparatus according to one embodiment includes a door closer having a pinion adapted to be operably coupled to a door and rotate in a first direction in response to opening the door and to rotate in a second direction in response to closing the door, and a power boost module operably coupled to the pinion. The power boost module includes a motor adapted to generate electrical energy via rotational movement of the pinion and supply a boost force to the pinion to assist closing the door, a gearing operably coupled to the pinion and the motor and structured to back drive the motor to generate the electrical energy in response to rotation of the pinion, and an energy storage device adapted to store the electrical energy generated by the motor and supply stored electrical energy to the motor for the boost force.