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  2. John Danner (inventor) - Wikipedia

    en.wikipedia.org/wiki/John_Danner_(inventor)

    Danner invented the John Danner Revolving Bookcase, a pivot and post revolving bookcase. He patented the bookcase on May 16, 1876. [1] [2] [3] His bookcase hangs suspended from a simple cast iron bearing which sits on top of an inner column or post. The revolving mechanism consists of two nesting cast iron cones that provide a precise pivot ...

  3. Cardea - Wikipedia

    en.wikipedia.org/wiki/Cardea

    Cardea or Carda was the ancient Roman goddess of the hinge (Latin cardo, cardinis), Roman doors being hung on pivot hinges.The Augustan poet Ovid conflates her with another archaic goddess named Carna, whose festival was celebrated on the first day of June and for whom he gives the alternative name Cranê or Cranea, a nymph.

  4. Dihedral synchro-helix actuation doors - Wikipedia

    en.wikipedia.org/wiki/Dihedral_Synchro-Helix...

    The dihedral synchro-helix actuation door system is a type of door with a hinge mechanism which allows the doors to rotate 90° by sweeping outwards and upwards at the hinge. [1] It was designed and developed by Christian von Koenigsegg on behalf of high-performance sports cars manufacturer, Koenigsegg Automotive AB . [ 2 ]

  5. Hinge - Wikipedia

    en.wikipedia.org/wiki/Hinge

    Small H hinges (3–4 in or 76–102 mm) tend to be used for cabinets, while larger ones (6–7 in or 150–180 mm) are for passage doors and closet doors. HL hinge Commonly used for passage doors, room doors, and closet doors in the 17th, 18th, and the 19th centuries. On taller doors, H hinges were occasionally used between them. Pivot hinge

  6. Revolute joint - Wikipedia

    en.wikipedia.org/wiki/Revolute_joint

    A revolute joint (also called pin joint or hinge joint) is a one-degree-of-freedom kinematic pair used frequently in mechanisms and machines. [1] The joint constrains the motion of two bodies to pure rotation along a common axis. The joint does not allow translation, or sliding linear motion, a constraint not shown in the diagram. Almost all ...