A hinged mechanism includes: panels; and hinges connecting respective pairs of the panels to each other in a closed loop so that the hinged mechanism is non-planar, wherein at least one of the hinges is a rolling-contact hinge. All of the hinges can be rolling-contact hinges. The closed-loop hinged mechanism can comprise at least four hinges, each of the at least four hinges being a sole connection between a respective adjacent pair of the panels. A cross section of rolling surfaces of the rolling-contact hinge can be circular. A cross section of rolling surfaces of the rolling-contact hinge can be non-circular.

A hinge has a hinge body forming an articulating section extending between a first end and a second end of the hinge. The articulating section is adapted to bend from a neutral axis when the first and second ends are parallel to an angular range in which the first end is arranged among a plurality of angles within the angular range relative to the second end. The hinge body may define a receptacle along the articulating section, and an insert may be provided for insertion into the receptacle. The insert can modify the stiffness of the hinge in the angular range and is arranged parallel to the neutral axis.

A hinge has a hinge body forming an articulating section extending between a first end and a second end of the hinge. The articulating section is adapted to bend from a neutral axis when the first and second ends are parallel to an angular range in which the first end is arranged among a plurality of angles within the angular range relative to the second end. The hinge body may define a receptacle along the articulating section, and an insert may be provided for insertion into the receptacle. The insert can modify the stiffness of the hinge in the angular range and is arranged parallel to the neutral axis.

The safe door is a releasable door comprising a fire resistant body attached to a door jamb to provide privacy. Safe door comprises a frame less door panel attached to a door jamb by magnets engineered to release when a breakaway force is applied to the door in any direction. Safe door is assembled with welding and adhesive of a foam core, a fire sock and a protective sheet inside a cover of vinyl sheeting. The fire sock and cover are closed to prevent moisture penetration or disassembly to protect people and property. A handle on a handle side and a hinge on a hinge side attach where a traditional door may attach to allow door to move from an open position to a closed position.

The safe door is a releasable door comprising a fire resistant body attached to a door jamb to provide privacy. Safe door comprises a frame less door panel attached to a door jamb by magnets engineered to release when a breakaway force is applied to the door in any direction. Safe door is assembled with welding and adhesive of a foam core, a fire sock and a protective sheet inside a cover of vinyl sheeting. The fire sock and cover are closed to prevent moisture penetration or disassembly to protect people and property. A handle on a handle side and a hinge on a hinge side attach where a traditional door may attach to allow door to move from an open position to a closed position.

A uniform distribution support structure of rotary shaft link assembly includes a rotary shaft assembly and a support assembly. The rotary shaft assembly has multiple connection members. Each connection member is formed with a hollow section and a perforation. A guide face is disposed in each hollow section. A spacer shaft rod is disposed between each two adjacent connection members. Each spacer shaft rod is formed with a through hole. A guide arched face is disposed in each through hole. The support assembly has a support member and a lateral support member passing through the through holes and the hollow sections. Multiple opposite guide arched faces are disposed on the support member. Multiple opposite guide faces are disposed on the lateral support member. The guide faces and the guide arched faces respectively abut against the opposite guide faces and the opposite guide arched faces.

A uniform distribution support structure of rotary shaft link assembly includes a rotary shaft assembly and a support assembly. The rotary shaft assembly has multiple connection members. Each connection member is formed with a hollow section and a perforation. A guide face is disposed in each hollow section. A spacer shaft rod is disposed between each two adjacent connection members. Each spacer shaft rod is formed with a through hole. A guide arched face is disposed in each through hole. The support assembly has a support member and a lateral support member passing through the through holes and the hollow sections. Multiple opposite guide arched faces are disposed on the support member. Multiple opposite guide faces are disposed on the lateral support member. The guide faces and the guide arched faces respectively abut against the opposite guide faces and the opposite guide arched faces.

A radial progression hinge cap has a cap body that is configured to attach to a door jamb of a door frame above a geared continuous hinge that supports a door in the door frame. The cap body has a rear attachment channel that is configured to be attached at the door jamb. The cap body also has an upper surface that slopes downward from a top edge of the rear attachment channel to a front distal edge of the cap body. The front distal edge protrudes a threshold distance away from the rear attachment channel so that the upper surface of the cap body spans over and conceals a top surface of the geared continuous hinge and an upper corner of the edge portion of the door as it moves between the open and closed positions.

A radial progression hinge cap has a cap body that is configured to attach to a door jamb of a door frame above a geared continuous hinge that supports a door in the door frame. The cap body has a rear attachment channel that is configured to be attached at the door jamb. The cap body also has an upper surface that slopes downward from a top edge of the rear attachment channel to a front distal edge of the cap body. The front distal edge protrudes a threshold distance away from the rear attachment channel so that the upper surface of the cap body spans over and conceals a top surface of the geared continuous hinge and an upper corner of the edge portion of the door as it moves between the open and closed positions.

Apparatuses and methods for controlling an operation of a powered system by extending the coverage of a sensor along a complex contour. An apparatus comprises a structure, a sensor, a hinge, and a contoured panel. The structure has a first edge in which at least a portion of the first edge has a complex contour. The sensor is attached to the structure. The hinge is attached to at least one of the sensor or the structure. The contoured panel is movably attached to the hinge and has a second edge that substantially aligns with the complex contour of the first edge of the structure.