A multi-joint link hinge includes a hinge bracket, a plurality of side portions, a link module, and a door bracket coupled to the link module. The hinge bracket includes a base portion that defines a plurality of screw coupling holes at a vertical surface of the base portion, and a plurality of side portions that extend from the base portion in a horizontal direction and are spaced apart from each other in a vertical direction. The link module includes a plurality of links that are coupled to the plurality of side portions along an axis that extends in the vertical direction, where the plurality of links is disposed between the plurality of side portions.

A multi-joint link hinge includes a hinge bracket, a plurality of side portions, a link module, and a door bracket coupled to the link module. The hinge bracket includes a base portion that defines a plurality of screw coupling holes at a vertical surface of the base portion, and a plurality of side portions that extend from the base portion in a horizontal direction and are spaced apart from each other in a vertical direction. The link module includes a plurality of links that are coupled to the plurality of side portions along an axis that extends in the vertical direction, where the plurality of links is disposed between the plurality of side portions.

A door hinge for a laboratory instrument door, the door hinge comprising a hollow body with a first longitudinal axis and a curved side wall comprising a track. At least a part of the track is inclined relative to the first longitudinal axis. The door hinge further comprises a linear guiding element with a second longitudinal axis parallel to the first longitudinal axis. At least a part of the linear guiding element is arranged in the hollow. The linear guiding element and the hollow body are rotatable against each other. The door hinge further comprises a body comprising a protruding pin. The body is movably attached to the linear guiding element so that the body is movable in two opposite directions along the second longitudinal axis and the protruding pin is movable on the track.

A bollard that supports a door with a top bearing, middle bearing and bottom bearing with the middle and bottom bearing offset from the bollard.

A bollard that supports a door with a top bearing, middle bearing and bottom bearing with the middle and bottom bearing offset from the bollard.

Systems and methods for swiveling a panel in relation to a panel frame are described. An exemplar panel swivel system includes a swivel support member, a housing subassembly, and a shaft. The swivel support member includes a base portion that has a first terminating end, a second terminating end, and has defined therein a shaft receiving aperture. The swivel support member further includes a raised surface extending from the first terminating end of the base portion and is designed to contact a top support structure and a securing edge extending from the second terminating end of that base portion, which is designed to contact a side support structure. The housing subassembly extends an elevated distance above the base portion. A central aperture defined in the housing subassembly aligned with the shaft receiving aperture. The shaft extends a shaft length and at least some of the shaft passes through the central aperture and the shaft receiving aperture. The shaft terminates at a panel fitting end that is designed to engage with a panel.

A bollard that supports a door with a top bearing, middle bearing and bottom bearing with the middle and bottom bearing offset from the bollard and a rigid structure molded in the door.

A door hinge having inner and outer door hinge parts comprising fixing means (hinge plates) for mounting to the door frame and to the door. The outer door hinge part has two bearing portions fixedly connected by the fixing means, and the inner door hinge part has one bearing portion between the two bearing portions of the outer door hinge part. At least one bearing portion has a blind hole with a flat base, and a first cylindrical sliding cup element lies in the blind hole with its end face outer wall superficially on the base of the blind hole. The first sliding cup element has a ball socket-shaped wall containing a metal ball. A second cylindrical sliding cup element lies fully or partly in the blind hole and, on its end face facing the ball, has a concave ball socket-shaped wall lying superficially on the ball surface.

A door hinge having inner and outer door hinge parts comprising fixing means (hinge plates) for mounting to the door frame and to the door. The outer door hinge part has two bearing portions fixedly connected by the fixing means, and the inner door hinge part has one bearing portion between the two bearing portions of the outer door hinge part. At least one bearing portion has a blind hole with a flat base, and a first cylindrical sliding cup element lies in the blind hole with its end face outer wall superficially on the base of the blind hole. The first sliding cup element has a ball socket-shaped wall containing a metal ball. A second cylindrical sliding cup element lies fully or partly in the blind hole and, on its end face facing the ball, has a concave ball socket-shaped wall lying superficially on the ball surface.

A bollard that supports a door with a top bearing, middle bearing and bottom bearing with the middle and bottom bearing offset from the bollard and a rigid structure molded in the door.