A barrier control system running a program thereon, the barrier control system including a main body, a control unit disposed within at least a portion of the main body to execute the program to control operations of the main body, and at least one control device connected to the control unit to control operations of the main body through the control unit based on the program.

An exemplary indicator mechanism is configured for use with a door closer including a body and an adjustment screw. The indicator mechanism generally includes an indicator, at least one indicium, and a cycloidal drive. The cycloidal drive is configured to selectively align the indicator and the at least one indicium in response to rotation of the adjustment screw to thereby indicate an operating characteristic of the door closer.

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.

The invention relates to a linear motor structure for a sliding door, comprising a rotor assembly, wherein the rotor assembly includes a fixed part and a movable part, the fixed part is provided with a permanent magnet, a slot hole is formed in a bottom part of the permanent magnet, the movable part is provided with a telescopic rod that is slidably inserted into the slot hole from one end of the slot hole, and a motion transmission part capable of transmitting a motion of the rotor assembly, and the movable part and the fixed part are fixed by a fastener. The linear motor structure is novel in design, reasonable in structure and favorable in adaptability due to the capability of flexibly adjustment of the rotor assembly according to a width of a door frame.

Described is a hinge for doors or windows comprising: a first fixed body (5) associated with a fixed frame (1) and having a first axis (X1) of fixed articulation and a slot (6) made parallel to the axis (XC) of longitudinal extension of the first fixed body (5); a second movable body (7) connected to a movable sash (2); a first lever (8) having a first end articulated to the first fixed body (5) about the first axis (X1) of fixed articulation, a second end articulated to the second movable body (7), defining a second axis (X2) of articulation, and an intermediate zone; a second lever (9) having a first end articulated inside the slot (6) of the first fixed body (5) to define a third slidable axis (X3) of articulation, a second end articulated to the second movable body (7) defining a fourth axis (X4) of articulation and an intermediate zone; the first (8) and the second (9) levers are articulated to each other in the corresponding intermediate zone to define a fifth axis (X5) of shared articulation; means (10, 11) for adjusting at least one between the first axis (X1) of articulation and the third slidable axis (X3) of articulation along at least a first horizontal axis (XR1) parallel to the axis (XC) of longitudinal extension of the first fixed body (5) or a second horizontal axis (XR2) perpendicular to the axis (XC) of longitudinal extension of the first fixed body (5); the adjustment means (10) comprising a slide (12) positioned on the first fixed body (1) and having a first constraining portion for the first axis (X1) of articulation and a second portion connected to an adjustment axis (X12), parallel to the first axis (X1) of articulation, using a rotary element (13) configured for moving the slide (12), in both directions and along the first horizontal axis (XR1), in such a way as to vary the distance (D) between the adjustment axis (X12) and the first axis (X1) of articulation along the first horizontal axis (XR1), in both directions.

A door drive mechanism includes a main drive and an auxiliary drive.

In this connection it is provided that the drive assembly of the auxiliary drive is formed as a drive assembly with a linear output and that the drive assembly of the auxiliary drive is borne in a pivot bearing and that the rod system is formed as a slide arm and the rod system bearing is formed as a slide rail.

A pneumatic door closer includes a rotary energy-storing mechanism including a housing and a driving mechanism. The driving mechanism includes a cylinder, a second piston assembly and a sealing element, the sealing element is in an air tight connection with the cylinder and the second piston assembly, to form a closed space filled with high pressure gas in the cylinder. The second piston assembly drives the closed space into a first air chamber and a second air chamber in communication with each other. The driving mechanism also includes a first piston assembly connected to the second piston assembly. The pneumatic door closer also includes a transmission mechanism having one end received in the housing and another end connected to the door frame.

The present invention relates to a door hinge including: a fixed part having a body formed in an angular pipe shape of at least a triangle or more, a rack gear disposed parallel to the body on one side inner surface of the body, and an insertion hole formed on the side portion of the body in such a manner as to communicate with the interior of the body; and an operating part having a rotary shaft, a pinion gear disposed on the outer peripheral surface of the rotary shaft in such a manner as to correspond to the rack gear, and a moving piece protruding outwardly from the outer peripheral surface of the rotary shaft, wherein the rotary shaft is inserted into the insertion hole in such a manner as to allow the moving piece to outwardly protrude from the door hinge, and the moving piece rotates around the rotary shaft, so that the rotary shaft moves along the rack gear.

An apparatus is provided for minimizing closing force of a door. The apparatus comprises a housing adapted to be disposed in the hinged edge of the door. A piston is slidably mounted in the bore. A button having an inner end and an outer end is disposed in the bore with the inner end of the button engaging the piston for urging the button toward a first extended position where the button extends from the edge of the door. The button is slidable in the bore relative to the housing for reciprocal movement between the extended position and a second position where the button is depressed into the bore against the force of the piston. The button is disposed so that the outer end of the button engages the door frame for slowing movement of the door in a closing direction as the button is moved into the bore to the depressed second position.

A door drive mechanism includes a main drive and an auxiliary drive.

In this connection it is provided that the components of the main drive and of the auxiliary drive to be mounted on the door leaf side are borne in or on a common and/or continuous housing mechanism and/or bearing framework mechanism and/or mounting plate mechanism to be mounted on the door leaf side and/or are covered by a common and/or continuous cover to be mounted on the door leaf side.