Disclosed is an access control apparatus according to the present invention. The access control apparatus includes: a body located on a passage; an opening and closing part coupled to the body and having a multi-stepped door adapted to open and close the passage through a translational motion; and a driving part coupled to the body and the opening and closing part to control an operation of the opening and closing part, wherein the driving part has a linear motor and the multi-stepped door includes a first door driven by means of the linear motor and a second door coupled to the first door in such a manner as to be interlocked with the first door.

Provided is a door engagement device including: a first member that extends in a vertical direction and is able to come into contact with an engaged part from a door closing direction side; a second member that extends in the vertical direction at a position with a distance from the first member to a door opening side and is able to come into contact with the engaged part from a door opening direction side; a pair of link members that form a parallel link mechanism in cooperation with the first member so as to enable the first member to pivotally move between a predetermined first position and a predetermined second position located closer to the door closing direction side than the first position while keeping the posture of the first member; and a restricting part that releasably restricts the pivotal movement of the first member at the first position.

A sliding apparatus for a sliding door comprises: a front top roller part including an upper outer bracket and an upper inner bracket; a front bottom roller part including a lower outer bracket and a lower inner bracket which are fitted and fixed to both lower ends of the front door while being connected to each other by a lower connecting bar, and are formed to slide in both lateral directions after moving forward; a rear roller part including rear outer brackets and rear inner brackets which are formed at both upper ends and both lower ends of a rear door formed on one side of the front door, so as to slide the rear door; a front rail part including guide rails which are formed on the upper and lower end surfaces of a rear door frame and the upper and lower surfaces of the rear inner bracket.

A secure passageway is described where a subject is required to pass through two or more chambers in order to travel between two areas, typically where one area is secure and the other is not. For a passageway including first and second chambers, three electronically controlled doorways are included: one between the two chambers; one between a first chamber and a first area; and one between the second chamber and a second area. Sensors are included to determine how many subjects have entered a chamber. Sensors are also included to determine if a subject represents a threat. Subjects determined to represent a threat may be detained or encouraged to reverse direction and exit the passageway through the door where they entered. When a subject is determined to represent a threat, an alarm is optionally sounded.

An electric sunshade and sunroof structure may include cable assembly connected to a drive motor via a cable, sliding longitudinally along each of guide slide assemblies disposed on rails provided on both sides of a roof panel of a vehicle, thus opening or closing a sunshade, and moving integrally with the guide slide assembly to open a sunroof glass, a sunshade guide lever provided on the sunshade and selectively coupled with the cable assembly to move the sunshade, and a guide slide lever provided on a rear end portion of the guide slide assembly and selectively coupled with the cable assembly to move the sunroof glass.

The present invention is generally a movable barrier assembly that includes a screen garage door that may be remotely operated to open and close an entry to a garage, thereby facilitating ventilation, and preventing debris such as leaves, insects, etc. from entering the garage. In an exemplary embodiment, a screen assembly includes a first track running substantially parallel to a second track on which a garage door travels. A movable barrier operator that actuates the garage door and screen door may include a first motor to operate the screen door, and a second motor to operate the garage door. In exemplary embodiments, a single control unit is configured to operate both motors and thus operate each movable barrier.

A portal apparatus for securely controlling passage is described. The apparatus uses a passageway which includes at least two moveable door panels that operate in conjunction with at least two sidewalls including at least one linear sidewall. The apparatus includes position sensors for tracking a position of a subject passing through the passageway and determining a rate of movement of the subject. While the subject is walking through the passageway, each door panels is controlled to move at the determined rate of movement of the subject.

The present invention is generally a movable barrier assembly that includes a screen garage door that may be remotely operated to open and close an entry to a garage, thereby facilitating ventilation, and preventing debris such as leaves, insects, etc. from entering the garage. In an exemplary embodiment, a screen assembly includes a first track running substantially parallel to a second track on which a garage door travels. A movable barrier operator that actuates the garage door and screen door may include a first motor to operate the screen door, and a second motor to operate the garage door. In exemplary embodiments, a single control unit is configured to operate both motors and thus operate each movable barrier.

A track-guided power door operator used to simultaneously open a set of opposing hinged doors is disclosed. The door operator comprises a pair of articulated arm linkages, each pair of which is pivotally mounted at one end to a vertically oriented pivot pin at one end of a guide member and pivotally connected at the other end to a vertically oriented pivot pin of a yoke member of a translating carriage, which is engaged by a horizontal lead screw. Translation of the carriage member due to rotation of the lead screw causes lateral separation between the knuckles of the articulated arm pairs to cause doors contacted by the knuckles to rotate about their respective hinges. The door operator may include a control unit to control operation of the doors. The operator may further include magnetic latches to lock the doors closed.

A door assembly may include a first sidelite, a second sidelite where the first and second sidelites are disposed in a common plane and defining a door opening between the first and second sidelites, a first sliding panel, a second sliding panel where the first and second sliding panels are movable from a closed position disposing the first and second sliding panels to block access through the door opening and an open position in which the first sliding panel is proximate the first sidelite and the second sliding panel is proximate the second sidelite, and are disposed in a second plane parallel to the common plane in both the open and closed position, a first partial door panel disposed in a third plane opposite the second plate relative to the common plane, and a second partial door panel disposed in the third plane.