An interchangeable pet door is disclosed. The interchangeable pet door comprises a door, a knob, a plurality of windows, a frame, and a hinge. The knob comprises a latch for securely closing the door. When the interchangeable pet door comprises a hinge, inserting the hinge into a hinge recess securely locks the door. The different elements of the interchangeable pet door are configured to be oriented in a predetermined, interchangeable, or customizable manner. The door is configured to open from, slide into, revolve within, or move in some other non-limiting equivalent way from or relative to a frame.

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.

A belt tensioning system (170) for tensioning a belt (171) of a belt drive system (970) for transferring torque from a drive unit (112) of a door operating system (100) to a sliding door leaf (101) of a sliding door assembly (200), the belt tensioning system comprising a belt wheel (176) connectable to the belt (171) for torque transfer between said belt wheel (176) and an additional belt wheel (175) of the belt drive system (970); a belt wheel guiding arrangement (330), the belt wheel (176) being movably connected to said belt wheel guiding arrangement (330); and a belt tensioning arrangement (470) operatively connecting the belt wheel (176) and the belt wheel guiding arrangement (330) for adjusting the position of the belt wheel (176) relative the belt wheel guiding arrangement (330).

A sliding door assembly includes a track assembly defining a track surface and a slot; and a sliding door comprising a door body, a hinge rod, and a locking pin, each of the hinge rod and the locking pin extending from the door body and through the slot; wherein the sliding door is laterally slidable along the track assembly between a first position and a second position, and wherein each of the hinge rod and the locking pin slide laterally within the slot as the door slides between the first position and the second position.

A door assembly and a frame member for a door assembly. The door assembly may include at least one door panel and a door frame having a plurality of frame members including a header and a pair of side jambs. The invention may also be considered a frame member including a storage compartment. The frame member may include a core; and a top piece adjoining the core to form a structural member. The core and the top piece may be a composite of cellulosic material and at least one other material. The top piece may be a two-piece top piece and may include hollow cavities. Also disclosed are door jamb frame members and mullion frame members.

Various disclosed embodiments include a lock assembly and hinge assembly. The hinge assembly has a security engagement extension feature. The hinge assembly also includes a receiver. The receiver has a receiving area for receiving at least a portion of the security engagement extension feature and the receiver has a receiver security engagement feature formed as part of the receiver. The receiver security engagement feature is complementary to the security engagement extension.

A door locking device includes a mounting plate configured to be mounted to the door; a reinforcement gusset extending outward from the mounting plate, the reinforcement gusset defining an extension portion; and a wall engagement member adjustably affixed to the extension portion of the reinforcement gusset and laterally offset from the mounting plate; wherein the wall engagement member is movable relative to the extension portion in a direction substantially perpendicular to the mounting plate, and wherein the extension portion is configured to confront a wall adjacent to the door.

Disclosed is a panic bar with a door closer, the panic bar having a locking device installed at a front end of a case and a door closer provided at a rear end of the case. The locking device is released upon pushing of the push bar provided in the case. An air cylinder is installed inside the case. A guide member is installed in one side of the air cylinder and a cylinder sealing cap is installed in the other side of the air cylinder. One side of a piston rod having a piston for compressing and expanding air inside the air cylinder passes through the guide member. A spring disposed between the piston and the guide member is installed on the piston rod.

A swing door operator system is described, the system including a first swing door operator, a second swing door operator, and at least one door leaf hinged connected at an opening in the wall. The first swing door operator is connected to a first side of the door leaf, the second swing door operator is connected to a second side of the door leaf, the first side of the door leaf is opposite to the second side of the door leaf, and the first swing door operator and the second swing door operator interact to move the door leaf between an open and closed position.

In example implementations, a method is provided. The method includes determining, by a processor, that a vehicle is approaching a door of a building based on a velocity vector of the vehicle, calculating, by the processor, a time of arrival of the vehicle at the door based on the velocity vector of the vehicle and a distance of the vehicle from the door, and controlling, by the processor, the door to begin opening at a time based on the time of arrival and an amount of time for the door to open such that the door is opened when the vehicle arrives at the door.