A door actuator for opening and/or closing a door, includes a fluid housing with an inner compartment, which is filled with fluid, in particular hydraulic oil, a fluid housing opening in the fluid housing for draining the fluid at thermal overload, a thermally activatable valve for opening, which closes the fluid housing opening, and a collecting device, which is disposed outside the fluid housing opposite the fluid housing opening, forms a collecting space for the fluid, is open towards the fluid housing opening, and includes at least one drain opening for draining the fluid from the collecting space.

A temperature activated door spring device includes a spring having a coil with a contiguous upper arm and lower arm. The coil includes an inner hinge pin hole and has a circumferential edge sized to mount on the top of a hinge knuckle. A collar is affixed within the inner hinge pin hole wherein the inner hinge pin hole is encompassed by the collar sized to accept an inserted hinge pin. A pellet hole is located proximate an extended end of the upper arm, wherein the pellet hole is sized to accept a fusible pellet. An upper portion of the pellet hole traverses through the upper arm and a lower portion of the pellet hole traverses through the lower arm so that when a fusible pellet is inserted into the pellet hole it holds the upper arm and the lower arm together in a spring loaded position.

An apparatus comprises a base plate configured to be coupled to a door, the door configured to be positioned in an open position and a closed position; a closing mechanism coupled to the base plate and configured to be coupled to a hinge of the door and having an unprimed state and a primed state, the closing mechanism configured to be transitioned between the unprimed state and the primed state by a user; wherein in the unprimed state the closing mechanism is decoupled from operation of the door; and in the primed state the closing mechanism is configured to move the door into the closed position responsive to receipt of a signal, and the closing mechanism is configured to allow movement of the door between the open position and the closed position in absence of the signal.

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 dog toy container can be used to store dog toys or consumable objects, such as chew toys, ropes, balls, stuffed animals, edible chews, bones, and other similar objects used to entertain or reward or please dogs. The dog toy container having a pedal arrangement and a lid in connection with a motorized movement arrangement, such that when a dog depresses the pedal arrangement with its paw, the dog will activate the motor to lift or lower the lid and thereby permit the dog access to the storage area.

A door actuator for opening and/or closing a door, comprising includes a fluid housing with an inner compartment, which is filled with fluid, in particular hydraulic oil, a fluid housing opening in the fluid housing for draining the fluid at thermal overload, a thermally activatable valve for opening, which closes the fluid housing opening, and a collecting device which is disposed outside the fluid housing opposite the fluid housing opening, forms a collecting space for the fluid, is open towards the fluid housing opening, and includes at least one drain opening for draining the fluid from the collecting space.

A backplate for a door actuator includes at least one first mounting element and a second mounting element, wherein one of the two mounting elements is formed for fastening to a mounting surface, in particular door, casing or wall, and the other mounting element is formed for receiving the door actuator. The backplate also includes, at least one connecting assembly, which in a retaining position, keeps the two mounting elements together and, in a release position, does not keep the two mounting elements together, and at least one shape memory assembly with a shape memory element made from shape memory material, wherein, upon thermal activation, the shape memory assembly moves the connecting assembly to the release position.

A hold-open arrester arrangement has a low power consumption, and therefore a battery lifetime is long in the embodiments of the invention utilizing the battery. The hold-open arrester arrangement has a hold-open arrester arrangement having a hold-open function to hold a door open. The arrangement has also an electric release arrangement. The release arrangement is arranged to release the hold-open function in a fire alarm situation. The hold-open arrester arrangement comprises a sliding block and an arrester unit. The sliding block is connectable with a slide rail in a sliding manner and also pivotable connectable to an arm of a door closer. The arrester unit is connectable to the slide rail and has a body, said electric release arrangement, and said hold-open function with the sliding block.

It is described herein a venting apparatus for an opening in a roof. The venting apparatus for an opening in a roof may comprise a structural frame, an adapter, a mount, a hinge, and a latch. The adapter may comprise a frame adapter section, a lip extending inwardly from a portion of the frame adapter section inner surface, and a protrusion extending upwardly from the lip. The frame adapter section may be configured to fit around an outer surface of the structural frame while the mount may be configured to fit around an outer surface of the protrusion. The latch may be configured to receive a signal from a device when the device detects the presence of smoke within the building to cause the latch to change from a latch closed position to a latch opened position.

A fire protection fastening device for fastening a door actuator, includes a frame with a back side, which is to be oriented to a mounting surface, in particular to a door, casing or wall, wherein a mounting axis is defined vertically to the back side. The frame is formed for arrangement between a door actuator and the mounting surface or is an integral component of the door actuator (102), at least one reaction chamber formed in the frame, wherein the frame delimits the reaction chamber on the entire circumference. The reaction chamber is open on the back side and/or on a front side of the frame opposite the back side. The device further includes a drive element made from thermally intumescent material disposed in the reaction chamber and, when activated, is formed for pushing away the door actuator from the mounting surface.