Abstract:
A door closer is provided to automatically pull a storm or screen door to a fully closed position without user action. The door closer includes a bracket housing with a cam switch movable along a track as the door opens and closes. The closer cylinder rod is engaged with the cam switch until the door is fully opened. The cam switch biases the closer cylinder and rod as the door approaches the closed position.
Abstract:
A door closer is provided to automatically pull a storm or screen door to a fully closed position without user action. The door closer includes a bracket housing with a cam switch movable along a track as the door opens and closes. The closer cylinder rod is engaged with the cam switch until the door is fully opened. The cam switch biases the closer cylinder and rod as the door approaches the closed position.
Abstract:
A hinge assembly includes a hinge cup, an arm, an installation member and a damping device. The hinge cup has a receiving space and a positioning hole communicating with the receiving space. The bottom wall of the receiving space has at least one first engaging part. The arm is pivotably connected to the hinge cup. The damping device is located in the receiving space and includes a damping member, a slide and a housing. One end of the damping member is mounted in the positioning hole. The damping member has a piston rod which is connected to the slide. The housing has at least one second engaging part which is engaged with the first engaging part on the bottom wall. When the arm is moved toward a closed position relative to the hinge cup, the arm pushes the slide to provide the damping force.
Abstract:
An electronically-activated roof access hatch is described that allows an operator to unlock the roof access hatch safely from the ground before ascending to the roof access hatch. The opening of the roof access hatch is controlled by a control panel that unlocks the roof access hatch and causes the roof access hatch to open.
Abstract:
An electric door operator for opening and closing one or a spaced pair of transit vehicle passenger doors for being mounted over an opening for the doors. A rotatable input shaft has an electric motor secured to the input shaft for driving the input shaft, a worm centrally positioned on the motor shaft, and an electric brake mounted to the input shaft at an end opposite of the electric motor. A drum cam lifts a pinion from a worm gear disconnecting the worm gear from an output gear train in an emergency.
Abstract:
A gate arm for a swing gate incorporates a release mechanism that releases the gate arm and therefore allows the gate to swing freely about its hinges when inwardly-directed pressure applied to the gate exceeds a threshold level. The gate arm also includes a spring-loaded pivot joint that applies pressure to the gate when the gate is operating normally and is in the closed position, and further works cooperatively with the release mechanism to prevent damage to the operator and gate arm when the gate is forced open.
Abstract:
A gate arm for a swing gate incorporates a release mechanism that releases the gate arm and therefore allows the gate to swing freely about its hinges when inwardly-directed pressure applied to the gate exceeds a threshold level. The gate arm also includes a spring-loaded pivot joint that applies pressure to the gate when the gate is operating normally and is in the closed position, and further works cooperatively with the release mechanism to prevent damage to the operator and gate arm when the gate is forced open.
Abstract:
A window assembly including a frame having an interior portion with an inner surface, and a sash having an interior portion and an exterior portion. The window assembly includes an operational mode and a wash mode. In the operational mode, the sash is movable from a closed position to a position in which the sash is generally perpendicular with the frame. In the wash mode, the sash is movable to a position where the exterior of the sash faces toward the interior frame.
Abstract:
A window assembly including a frame having an interior portion with an inner surface, and a sash having an interior portion and an exterior portion. The window assembly includes an operational mode and a wash mode. In the operational mode, the sash is movable from a closed position to a position in which the sash is generally perpendicular with the frame. In the wash mode, the sash is movable to a position where the exterior of the sash faces toward the interior frame.
Abstract:
A drive arrangement for a shaft has a module carried by the shaft and including a motor, a driven wheel and a drive wheel. The motor, gearbox and drive wheel are carried on a slider plate which can slide transverse to the axis of the shaft. A front plate is fixed transverse to the axis of the shaft. A Bowden cable has its sheath attached to the front plate, and its inner cable attached to the slider plate, so that manipulation of the Bowden cable at a remote location allows force to be applied between the plates either tightening the belt to apply drive from the motor to the shaft, or releasing tension in the belt, to disengage the drive.