Abstract:
A door operator for controlling operation of a door, the door operator having a motor to open the door against a spring force, the door operator further comprising a door position sensor for transmitting a signal indicative of door position; and among other things, calculates a door moment of inertia based on a net torque and the time for the door to reach a predetermined angle from the closed position. Also provided is a door operator that compares door speed to a desired door speed based on a door speed-position profile and generates a door speed error signal and minimizes the door speed error signal by adjusting the braking load resulting from charging a chargeable battery using the motor as a generator.
Abstract:
A door opener for opening a door having an external surface comprises a screw mounted for rotary motion and a carriage mounted on the screw such that rotation of the screw causes motion of the carriage along the screw. A motor rotates the screw. An actuator arm has a first end and a second end, where the actuator arm is operatively connected to the carriage such that movement of the carriage causes the actuator arm to move between a retracted position where the door is closed and an extended position where the door is open. The first end of the actuator arm is in contact with but not connected to the external surface of the door such that the first end of the actuator arm rides over the external surface of the door.
Abstract:
A spring power setting indicator for a closing apparatus for a wing such as a door or window, including a closer housing in which a compression spring is disposed. The spring power setting indicator includes a collar defining a threaded opening adapted to engage an adjustment screw for adjusting the bias of the compression spring. The collar may be substantially disc-shaped, and has a peripheral side that defines an annular channel in which a magnetic ball is disposed. An indicator housing with indicia of closer size may be mounted to the closer housing. Another magnetic ball may be disposed in the indicator housing. The magnetic balls are attracted to each other, and the ball in the indicator housing follows the ball in the channel as the collar moves in response to turning of the adjustment screw, permitting external reading of closer size with the indicia based on ball position.
Abstract:
A hinge assembly includes a base, a rotating member, and a connecting member connecting the base to the rotating member. The connecting member is slidably positioned on the base. The rotating member is rotatably positioned on the connecting member. The rotating member relative to the connecting member is able to move to be on an outer side of the base with sliding movement of the connecting member relative to the base.
Abstract:
A door closer that integrally incorporates a door-opening-assistance device, and that therefore eliminates the need for unnecessary troublesome adjustment between parts, and whose number of parts is reduced, making said door closer compact. The door closer 1 includes a closer 1a that includes a pinion 5 that rotates in the forward and reverse directions when the door is opened or closed, respectively. A cylinder 9 is meshed with the pinion 5 and moves forward and backward. A closing spring 14 energizes the door in the closing direction via the cylinder 9 and the pinion 5. A opening-assistance device 1b that includes an opening spring 22 that stores an opening force in the door-opening direction due to the movement of the cylinder 9 when the door is opened. Locking mechanisms 27, 28, and 29, that—when the door is opened—lock the opening spring 22 under an opening-force-storing condition. An unlocking mechanisms 23 and 24 that—when the door is closed—unlock the locking mechanisms. The closer 1a and the door-opening-assistance device 1b are inside the same case 6 and interlinked by the opening of the door.
Abstract:
A sliding door automatic closing device is provided whereby a cylindrical tube is attached to the sliding door and a pulley housing is rotateably mounted to the top of the cylindrical tube. A cable is attached at one end to a cable housing, the housing mounted onto the frame header, and the cable is attached at a second end to a weight within the cylindrical tube. The bearing-mounted pulley housing allows the sliding door panel to breakout when needed and then be returned to its original position for continual use of the automatic closing feature without any mechanical adjustments. The bearing-mounted pulley housing, cable, and cable housing all remain in their original planar positions relative to the sliding door panel header; that is, these components do not breakout along with the sliding door panel.
Abstract:
A refrigerator and/or freezer with an appliance carcass, can be closed by at least one door, and a powered door operating device for automatically operating the door. The door operating device has drives both automatically opening and closing the door.
Abstract:
A rain sensor arrangement for an operator for a window having a frame, a sash pivotable with respect to the frame, and a pane mounted in the sash, wherein the operator is adapted for pivoting the sash between a closed and an open position and vice versa, and is controlled via control circuitry responsive to input signals from at least a rain sensor. The rain sensor has at least one sensing area arranged so as to be protected against rain by the window, when the sash is in the closed position.
Abstract:
A safety device is provided for a motor vehicle having at least one closable opening to the interior, with a closing element that is driven by an electric adjusting drive. A control unit evaluates data which are relevant for driving safety for an imminent accident and actuates the electric adjusting drive to initiate a rapid closing process for the closing element in an overcurrent mode thereof, before the accident actually occurs.
Abstract:
A door operator includes a housing; first and second pressure compartments; an unpressurized reservoir chamber; a drive unit disposed in the housing and coupleable to a door via an output shaft, the drive unit being associated with the first pressure compartment; a hydraulic pump in hydraulic connection with the first and second pressure compartments; a motor in driving relationship with the hydraulic pump; a spring force accumulator disposed in the housing, the spring force accumulator being associated with the second pressure compartment and coupled to the drive unit; a hydraulic circuit connecting at least one of the first and second pressure compartments with the hydraulic pump; and a fire-protection/releasing device disposed between the hydraulic circuit and the unpressurized reservoir chamber.