An exemplary door operator comprises a body, a hydraulic regulation valve, and a visual indicator mechanism. The hydraulic regulation valve is mounted to the body and is operable to adjust an operating characteristic of the door operator. The hydraulic regulation valve includes an adjustment screw having a variable screw position. The visual indicator mechanism is engaged with the hydraulic regulation valve, and is configured provide a visual indication relating to a level of regulation provided by the hydraulic regulation valve. The visual indication varies according to the variable screw position.

The displacement device (10), which is provided for the installation in a door compartment (18) of a functional entity (1), comprises a drive device (2) preferably comprising a housing (210), a spring mechanism (211), a pull cord pulley (212) coupled to the spring mechanism (211), and a pull cord (22), which is wound onto the pull cord pulley (212) and is guided preferably via at least one deflection pulley (231, 232, 233) up to a holding element (33, 339; 72), a mounting profile (14), which is connected or connectable by mounting hinges (131) to a single-part or multi-part door (11), which is held vertically aligned and displaceable by a holding device (4); which is connected on an upper end piece to an upper guide carriage (5) that is supported displaceably on an upper guide rail (15) and/or which is connected on a lower end piece to a lower guide carriage (6) that is supported displaceably on a lower guide rail (16); and which, connected to the drive device (2), is automatically displaceable between a rear-sided end position (S2) at the rear-side of the displacement device (10) and a front-sided end position (S1) at the front-side of the displacement device (10); and

an adjustment device (3, X3), with which a pre-tension on the spring mechanism (211) of the drive device (2) can be set. According to the invention the adjustment device (3, 3X) is arranged separated from the drive device (2) and comprises an adjustment element (33, X33) which is rotatable and lockable or displaceable and lockable and which adjustment element (33, X33) cooperates with the pull cord (22) led out of the drive device (2) in such a way that the pull cord (22) is pullable out of the drive device (2) by rotation or displacement of the adjustment element (33, X33) to set a corresponding pre-tension of the spring mechanism (211).

A piece of furniture includes a furniture body with an upper floor, a flap, and least one flap fitting arranged on the upper floor in order to hold the flap movably between a position closing a storage space of the furniture body and an opening position. The flap fitting includes a housing, on which a support arm is rotatably mounted, which includes a retaining element for fixing the flap, and an energy store for applying a force to the support arm. A damper is provided for braking a movement of the support arm in the closing direction shortly before the closing position is reached. The damper can be moved via an actuating element mounted in the housing and the support arm can be braked via the actuating element when the flap is moved in the closing direction shortly before reaching the closing position.

A window balance assembly includes: a housing with first and second interior spaces; a receiver rotatably supported in the first interior space; a curl spring disposed in the second interior space with a tail extending out of the housing; and a mounting bracket. The tail includes: a neck and a head. The mounting bracket includes first and second flanges. First and second guide members protrude from opposite sides of a rear surface of the first flange, and slidably support the tail proximate to the rear surface. First and second ramp members on the rear surface include an upper recess, and are spaced permitting passage of the neck therebetween. When the tail slides between the second guide members the ramp members force the head away from the rear surface, until the head passes beyond the ramp members. The curl spring biases the head into the recesses.

A control arm includes a first and a second arm section pivotably connected to each other. A control part is coupled to the first arm section and includes a control surface. A thrust piece is mounted on the second arm section and includes a counter control surface. At least one spring element biases the thrust piece relative to the control piece. The arm sections are pivoted relative to one another and the relative movement between the control part and the thrust piece is a rolling movement.

Disclosed in the present utility model is a nylon hinge for facilitating the adjustment of spring torque, where the nylon hinge further comprises an adjustment device, which is disposed within a first hinge mount and a second hinge mount and enables the automatic opening or closing thereof by adjusting torque. The adjustment device comprises a limiting sleeve, which is disposed within two ends of the first hinge mount and the second hinge mount, a positioning sleeve, a rotation rod, which penetrates the limiting sleeve and is used for adjusting the torque, and a torsion spring, one end of which is connected to the rotation rod, and the other end of which is connected to the positioning sleeve. By the present utility model, a rotation rod is rotated, and when the rotation rod is rotated, a torsion spring is driven to deform.

A window balance assembly includes: a mounting bracket, housing, receiver, and curl spring. A first housing portion has a first and second cantilevered protrusions at its first and second ends. A second housing portion has first and second cantilevered protrusion protruding from first and second interior portions of its front wall. Receiver rotation from first to second positions results in the first cam causing the first cantilevered protrusion of the second housing portion to deform outwardly in a first direction causing the first cantilevered protrusion of the first housing portion to similarly deform outwardly, and the second cam causes the second cantilevered protrusion of the second housing portion to deform outwardly in a second direction causing the second cantilevered protrusion of the first housing portion to similarly deform outwardly. Each cantilevered protrusion has undulations configured to grip the interior walls of a master window frame.