An urging structure for a lid includes a spring member having one spring end linked to a supply-port-forming member and the other spring end linked to a lid, and provided so as to be most elastically deformed at an intermediate position between a closed position and a maximum open position of the lid to urge the lid. The spring member is linked to the lid in such a way so as to vary a distance between the other spring end and a turning center of the lid, and the distance stays constant when the lid is in the closed position and in the intermediate position, increases in a process of moving from the intermediate position to the maximum open position, and becomes maximum when the lid is in the maximum open position.

A joining structure for two door members forming a door member for entrance opening and closing of an aircraft lavatory unit is configured so that a pair of brackets provided on the pair of door members are joined swingably by a bracket joining shaft; and one ends of a pair of covers are joined to the pair of brackets by bracket cover joining shafts, and the other ends of the pair of covers are joined swingably by a cover joining shaft, at a section farther away from the lavatory than the bracket joining shaft.

The present disclosure relates to a wing hinge for a field device housing, including: a first wing having a first and a second holding device, the first holding device configured to connect to the field device housing and to move the first wing about a first axis; a second wing having a third and a fourth holding device, the third holding device configured to connect to the second holding device and to move the second wing relative to the first wing about a second axis, wherein the fourth holding device is connectable to a housing cover as to move the housing cover relative to the second wing about a third axis; and a tensioning element in contact with the first wing and the second wing and configured to move the first wing relative to the second wing about the second axis from a first position into a second position.

An automatic door operator operating on standard 120V/240V AC power utilizes a servomotor for operation, and thus no separate transformer is required for the operator. The servomotor incorporates programming to limit torque, and thus no slip clutch is required in order to allow manual operation of the door. Furthermore, because the servomotor has built-in control logic, no separate digital control logic is required. Because the position of the servomotor is continuously maintained, the relative position of the door with respect to a fully opened or fully closed position is always known, and no separate external signal is required in order to monitor the door position.

A multi-body device includes a first machine body, a second machine body, a rotating member, a first magnetic member, a second magnetic member, and a stopper. The second machine body is pivoted to a pivot side of the first machine body. The rotating member is pivoted to the pivot side of the first machine body and located beside the second machine body. The first magnetic member is disposed at the second machine body. The second magnetic member is disposed at a portion of the rotating member corresponding to the first magnetic member. Two corresponding ends of the first magnetic member and the second magnetic member are magnetically repulsive to each other. The stopper is driven by the second machine body and disposed at the pivot side of the first machine body, so as to stretch into or retreat from a rotation path of the rotating member.

A window sash interlock includes a housing configured to mount to a side rail of a window sash. The housing includes a front face that substantially aligns with a surface of the side rail. A locking member is pivotably coupled to the housing about a pivot axis. The locking member is disposed at least partially within the housing and is movable between at least a locked position and an unlocked position. The locking member is biased so as to automatically return to the unlocked position, and in the unlocked position, the locking member at least partially extends from the front face of the housing.

Systems and methods for providing a door seal system for top-hanging sliding doors. In some implementations, two angled mating surfaces are used, one angled surface on a fixed frame and one reversed angled surface on the slideable door panel. The slideable door panel slides directly parallel to the fixed door frame. A mating seal surface is created that is only in frictional contact for a small portion of the linear slide distance of the door panel. In some implementations, rather than placing two opposing angled seal surfaces, the sealing system has one angled surface on the fixed door frame. In such implementations, the sliding door panel is adjusted to be in a reverse angled orientation relative to the angled surface of the fixed door frame. Seal designs for the rear vertical edge of the slideable door panel are also provided herein.

The present invention relates to a hinge device for a rotating door, and more particularly, to a hinge device for a rotating door, which is mounted on the rotating door so that the door can be opened and closed while rotating in various ways. The hinge device for the rotating door of the present invention rotates by an external force and then rotated in a free stop manner at a certain section, and automatically rotates in a reverse direction at a section where the hinge device reversely rotates after free stop rotation.

A joining structure for two door members forming a door member for entrance opening and closing of an aircraft lavatory unit is configured so that a pair of brackets provided on the pair of door members are joined swingably by a bracket joining shaft; and one ends of a pair of covers are joined to the pair of brackets by bracket cover joining shafts, and the other ends of the pair of covers are joined swingably by a cover joining shaft, at a section farther away from the lavatory than the bracket joining shaft.

A torque adjustment mechanism is provided for use with a torsion spring. The torsion spring is a coil spring having a plurality of helical coils that define a hollow core. A torque adjuster is positioned in the interior of the hollow core of the coil spring. The torque adjuster has a circular collar on one end and a securing flange on the other end. The circular collar is designed to fit into the hollow core of the coil spring. A clamp is positioned over the exterior of the coil spring in alignment with the circular collar. The clamp secures the coil spring to circular. The position of the collar in the spring defines the number of the coils that are active and establishes the level torque provided by the torsion spring.