A door stop comprises an elongate threaded member having a flat head section, such as a flat head bolt or elevator bolt, and a mounting panel carried on the threaded member. A cushioning member made of felt or other soft non-abrasive material can be positioned on the head section. A locking nut can be threaded on the threaded member, with the mounting panel between the locking nut and the head section. An alternative door stop comprises a spring-loaded member, and an elongate rod telescopically positioned within the spring-loaded member and adapted for sliding movement therein. A mounting panel can be formed on the spring-loaded member. A head section can be positioned on one end of the rod, and a cushioning member, made of felt or other soft, non-abrasive material can be attached to the outer surface of the head section.

Electronic door stop devices and an electronic door stop remote broadcast device are disclosed. The electronic door stop devices include a sound-activated remote release electronic door stop that automatically detects a particular sound and closes a propped open door and a silent broadcast signal-activated electronic door stop that provides automatic closing of propped open doors, by both silent broadcast signal and particular sound detection. The electronic door stop remote broadcast device broadcasts a wireless data signal to multiple silent broadcast signal-activated electronic door stops to automatically and concurrently close any doors propped open by the silent broadcast signal-activated electronic door stops. The sound-activated remote release electronic door stop is activated by an emergency alarm sound that a receiver of the sound-activated remote release electronic door stop can distinguish from other sounds and release the door automatically to achieve closure for fire integrity and intruder prevention.

A door lock includes a base and a lock bar moveably coupled to the base. The base includes an angled top wall and a bottom wall, and has at least one channel defined therein. The lock bar includes at least one rod having a first end coupled to the lock bar and a second end that extends into the at least one channel. The lock bar further includes a top wall and an angled bottom wall that is oriented at substantially the same angle as the base top wall such that the base top wall and lock bar bottom wall are substantially parallel to one another. The lock bar is moveable relative to the base from a first position to a second, engaged position, in which the second end of the at least one rod protrudes from the base bottom wall.

A portable door securement device is provided having a member extending from a first end engaged to a doorknob of a swinging door or endwall of a sliding door. A second end of the securement device is configured to be engaged with a support surface adjacent the door, to prevent opening of the door in a direction toward the engaged member.

A portable door securement device is provided having a member extending from a first end engaged to a doorknob of a swinging door or endwall of a sliding door. A second end of the securement device is configured to be engaged with a support surface adjacent the door, to prevent opening of the door in a direction toward the engaged member.

A door stopping system comprises a mounting member, a supporting member, a leg member, a spring member, a sleeve member, a first pin member and a second pin member. The mounting member is pivotally connected with the supporting member via the first pin member, the leg member is pivotally connected with the supporting member via the second pin member, the mounting member and the leg member are oppositely located to each other along the supporting member, the spring member is biased in between the supporting member and the leg member, and the sleeve member is slidably sleeved on the supporting member. The mounting member is configured to be removably attached to a door. The leg member is configured to contact a ground.

A door stopping system comprises a mounting member, a supporting member, a leg member, a spring member, a sleeve member, a first pin member and a second pin member. The mounting member is pivotally connected with the supporting member via the first pin member, the leg member is pivotally connected with the supporting member via the second pin member, the mounting member and the leg member are oppositely located to each other along the supporting member, the spring member is biased in between the supporting member and the leg member, and the sleeve member is slidably sleeved on the supporting member. The mounting member is configured to be removably attached to a door. The leg member is configured to contact a ground.

Provided herein is a doorstop that may be utilized to prevent opening of a door. Generally, the doorstop is configured for attachment near a bottom edge of a pull side of a door. The doorstop has a deployable wedge or stop element (e.g., stop cylinder) that moves from a suspended position, above a floor surface, to a deployed position in contact with a floor surface. After contacting the floor surface, any attempt to open the door imparts a rotation on the stop element. A radial dimension of the stop element increases along a length of a surface that contact the floor surface. In this regard, rotating the stop element provides an upward lift to the door, which is counteracted by hinges of the door. That is, rotating the stop element results in the door wedging, which prevents opening the door.

A portable door securement device is provided having a member extending from a first end engaged to a doorknob of a door to a second end engaged with a floor adjacent the door, to prevent opening of the door in a direction toward the engaged member. A slot at a first end of the member engages around a stem of the door handle thereby preventing disengagement of the member from the door, and preventing opening of the door.

A portable door securement device is provided having a member extending from a first end engaged to a doorknob of a door to a second end engaged with a floor adjacent the door, to prevent opening of the door in a direction toward the engaged member. A slot at a first end of the member engages around a stem of the door handle thereby preventing disengagement of the member from the door, and preventing opening of the door.