A furniture drive system for a furniture part that is moveably mounted on a furniture body, includes a mechanical control unit having a pivotally mounted control arm for moving the moveable furniture part and at least one energy store for applying force to the control arm; an electric drive unit configured as a component designed to be separate from the mechanical control unit, and which has an electric motor for the electric motor-powered support of the movement of the moveable furniture part and a driver that can be driven by the electric motor for transmitting a torque of the electric motor to the mechanical control unit; and a damping device for damping the movement of the moveable furniture part. The damping device is arranged in the component of the electric drive unit for damping the movement of the moveable furniture part.

A movable latch housing apparatus and method of installation for enhancing security of a latch mechanism that has a channel with a linear drive that is removably engagable to a slidable engagement structure with a shoulder that is pivotally attached through an arm to a door for automated opening and closing, with a lever that can selectably disengage the slidable engagement structure from the linear drive to allow the door to open freely. The apparatus includes a base and a pair of opposing sidewalls each extending in a same direction perpendicular to and straddling the base and attach to the shoulder, the sidewalls extend beyond the base forming an open ended slot for arm movement. Wherein operationally, the base and the sidewalls shield the lever from unauthorized access to help prevent disengagement of the lever from the linear drive which would allow the door to be freely opened.

A barrier operator feature enhancement device is designed to provide one or more features found in modern barrier operator devices and to incorporate those features into a previously installed barrier operator system. To facilitate ease of use, the barrier operator feature enhancement device can communicate with a large variety of barrier operators. Such communication may be wireless or wired, depending on the communication protocol implemented by a particular previously installed barrier operator. To facilitate the ease of installation, the device is designed to configure itself to operate with the communication protocol of the previously installed barrier operator. Once configured to be able to communicate with the previously installed barrier operator, the feature enhancement device works with the barrier operator to provide one or more additional features to enhance the capabilities of the previously installed barrier operator.

The present invention provides device that replaces the hinge pin in a door hinge to provide a door with automatic closing technology, triggered by the device's detection of an adverse condition in the surrounding environment, such as a fire or gas leak, the device including a lower extension pin that slides into the space conventionally occupied by the hinge pin, first and second arms that apply opposing rotational force to the door and door jam, respectively, when the device is activated, and a condition detection module employing at least one sensor and an activation system to activate the device upon the sensor's detection of an adverse environmental condition to close the door.

A retrofittable, auto-resetting detention locking apparatus is disclosed. The disclosed locking apparatus may be retrofitted to an existing access point to prevent tampering with a doorway locking mechanism. The locking apparatus may include a main body and slide which are biased towards one another via a spring, the main body and slide being able to slidably engage with one another.

A decorative doorstop comprising a clamp retrofitted to a plush figure and operable to prevent a door from abutting a portion of a doorframe.

A retrofit module configured for use with a door closer having a pinion. The retrofit module generally includes a case, an output shaft, a motor, and a control assembly. The output shaft is rotatably mounted in the case, and is configured for rotational coupling with the pinion. The motor is mounted to the case, and is operable to rotate the output shaft in a door-opening direction. The control assembly is mounted to the case, and is configured to operate the motor to drive the output shaft in the door-opening direction in response to an actuating signal.

A chain support mechanism for use with an openable frame component and a method of using such a chain support is provided, where a chain actuator is provided in a housing, the chain actuator including a push-pull chain which chain can bend in one direction only, the housing mounted with its longitudinal extent along one frame component with the chain attached to the openable frame component where the chain actuator may be manipulated to extend or withdraw the chain from the housing, thereby moving the openable frame component, and where the chain support mechanism includes a first arm pivotably fastened to the housing and a second arm pivotably fastened to the openable frame component, where the distal end of the first arm and the distal end of the second arm are pivotably connected by a sliding member, against which sliding member the chain may slide.

A door security device for preventing opening of a door. A first device includes a bar that seats against a doorframe on opposite sides of the door and a clamp that clasps a door latch and applies a force to draw the bar against the doorframe while pulling the door latch toward the bar. The door cannot be opened away from the bar. A second device has a bar that seats against a doorframe at the floor with a two plates that extend beneath the door and around to opposite sides of the doorframe. Removable pins or other locks obstruct the plates from sliding along the bar. The bar is tall enough that the door cannot pass over the bar, thus obstructing the door from opening inwardly. A closer cover slides over a mechanical door closing mechanism to be used alone or with the other devices.

A power boost assembly is disclosed that can be used with a door actuator, such as a door closer. The power boost assembly is structured to store an energy during a first movement of a door and release the stored energy during a second movement of the door. In one form the power boost assembly can be structured as a module that can be added to an existing door and door closer installation. In one form the power boost assembly is used to increase a closing force imparted to a door to ensure a latching event.