An illumination system is provided for an access door may include an elongated illumination housing configured to be coupled to at least one of an upstanding jamb and a corresponding jamb casing extending along the one side of the access door, an elongated light transmissive cover coupled to the illumination housing, an elongated light pipe received within the illumination housing, an illumination source housing operatively coupled to one end of the light pipe, an illumination source disposed within the illumination source housing and configured to produce and transmit visible light into the light pipe so as to be visible through the light transmissive cover, a source of electrical power, and a control unit configured to selectively apply electrical power from the source of electrical power to the illumination source to produce the visible light.

A door locking control system includes an armature coupled to a door or a door frame around which the door is opened or closed, a magnetic module provided on the door or the door frame to face the armature and operated to be fixedly brought into contact with or separated from the armature by a magnetic force induced from a change in a magnetic circuit occurring due to the rotation of a first magnetic body provided inside of the magnetic module, a detector configured to detect an open state or a closed state of the door, and a controller electrically connected to the detector and configured to control the operation of the magnetic module according to the open state or the closed state of the door detected by the detector.

A hinged mobile computing device includes a first housing part and a second housing part coupled by a hinge assembly having a harness, a harness cover, a first hinge body, and a second hinge body. The harness is configured to accommodate flexible printed circuitry and a cable that extend from the first housing part to the second housing part via the hinge assembly. The hinge bodies include respective friction bands, each friction band being configured to engage a respective shaft formed on the harness and having a gear configured to mesh with a respective cog arranged within the harness cover to coordinate a timing of the rotation of the first and second housing parts between face-to-face and back-to-back orientations. The hinge assembly further includes a spring-loaded opening mechanism.

The present invention relates to the technical field of door closers, and particularly discloses an electromagnetic release door closer. The electromagnetic release door closer comprises a door closer body, a slide rail, and a rocker arm, one end of the rocker arm is articulated with the door closer body, wherein the slide rail is provided with a slide groove and a slide cavity which are parallel to each other, a through slot which is parallel to the slide groove is arranged between the slide groove and the slide cavity, wherein an electromagnetic limiting mechanism can be fixed at any position in the slide cavity. In the electrified state of an electromagnet, an electromagnetic attracting plate and the electromagnet are in a fixed state under the action of magnetic force, a limiting latch bolt is located in the slide groove, and is used to limit the sliding of a slider in the slide groove, and under this state, the slider can slide freely between the limiting latch bolt and one end of the slide groove, that is, a door leaf can move freely between a position limited by the limiting latch bolt and a maximum opening position. The defect that a door leaf can only be fixed in one specific state in the prior art is overcome, the range of adjustment is wider, and the electromagnetic release door closer is more convenient to use, and can meet more use requirements.

An electronic lock device according to one embodiment includes a first magnetometer, a second magnetometer, a dynamic ferromagnetic component positioned between the first magnetometer and the second magnetometer, a processor, and a memory comprising a plurality of instructions stored thereon that, in response to execution by the processor, causes the electronic lock device to read sensor data from the first magnetometer and the second magnetometer, modify the sensor data to generate compensated sensor data that compensates for magnetic noise generated by the dynamic ferromagnetic component, and determine whether the door is in a closed state or an open state based on the compensated sensor data.

An automotive door system includes a hinge supporting a door. A door check module interconnects to one of the vehicle and the door by a linkage assembly. An output shaft is connected to the linkage assembly and rotates relative to a door check module housing. The output shaft provides an output torque to check the door in a desired door position. A sensor detects rotation of the shaft and produces a signal in response thereto. A brake assembly includes a shaft member operatively connected to the output shaft. The brake assembly has a normally closed position in which the shaft member is grounded to the housing in a door check mode. The brake assembly includes an open position that corresponds to one of a door closing mode and a door opening mode. The brake assembly moves from the normally closed position to the open position in response to the signal.

A clutch mechanism for coupling and uncoupling an electric motor and leadscrew has dog-clutch gears that can be engaged by a linear actuator, bell crank, and linkage shaft. Uncoupling force due to narrowed dog teeth are resisted by the alignment of the linkage shaft with the central portion of the bell crank.

A vehicle door hinge for a vehicle door opening vertically includes a first hinge part attached to a vehicle frame having a pivot attachment means, a second hinge part attached to the door attached to the pivot attachment means to allow the second hinge part to rotate the door in an opening or closing direction, a stopper part attached to the pivot attachment means at a distance from a mass centre of the stopper part, a locking mechanism for locking the stopper part position relative the second hinge part. The locking mechanism is moveable between an unlocked position and a locked position. The stopper part in the unlocked position is arranged to be moved by gravity to a resting position where it is adjacent or abutting the first hinge part and stopped by the first hinge part from rotating in the opening direction but free to rotate in the other direction.

An emergency door closing device that can be installed upon existing doors and hinges to automatically close doors in the response to smoke and fire. The improvements incorporated therein include a hinge cam pivot member that attaches to an existing hinge member of a door and produces a moment force about the existing hinge member allowing a reduced force necessary to pivot the door into a closed position. Further, a novel spring, cam, and lever system is incorporated to activate the moment force to close the door.

Actuator (10) comprising a base section (14,14a,14b); a permanent magnet (18,18a,18b); an electro permanent magnet (20, 20a, 20b); a coil (22, 22a, 22b) located around the electro permanent magnet (20, 20a, 20b); a power controller (24, 24a, 24b); and a movable member (28) comprising at least one magnetic target section (36), the movable member (28) being arranged to move to a first position (12) relative to the base section (14,14a,14b), when the electro permanent magnet (20, 20a, 20b) adopts a first polarity, and arranged to move to a second position (46) relative to the base section (14,14a,14b) due to a magnetic field generated by the permanent magnet (18,18a,18b) and the electro permanent magnet (20, 20a, 20b) in combination and acting on the magnetic target section (36), when the electro permanent magnet (20, 20a, 20b) adopts a second polarity. A lock device (50), a handle device (86) and a method are also provided.