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  2. Door closer - Wikipedia

    en.wikipedia.org/wiki/Door_closer

    Modern manual door closer Eclipse door spring and separate checking mechanism A door closer is a mechanical device that regulates the speed and action of a door ’s swing. [ 1 ] Manual closers store the force used to open the door in some type of spring and reuse it to close the door.

  3. Dorma - Wikipedia

    en.wikipedia.org/wiki/DORMA

    Dorma was founded by Wilhelm Dörken and Rudolf Mankel as Dörken & Mankel KG in Ennepetal, Germany, in 1908. [2] The family business was managed by owner Karl-Rudolf Mankel in third generation. As part of succession planning , previous sole Dorma proprietor Karl-Rudolf Mankel transferred the majority of his shareholding to his daughters ...

  4. Dihedral synchro-helix actuation doors - Wikipedia

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

    Pre-production model of Koenigsegg Jesko at the 2019 Geneva International Motor Show with its Dihedral Synchro-Helix Actuation Doors open Koenigsegg CCX with dihedral doors open. 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 ...

  5. Geared continuous hinge - Wikipedia

    en.wikipedia.org/wiki/Geared_continuous_hinge

    A geared continuous hinge is a type of continuous hinge used mostly on doors in high-traffic entrances and features gear teeth that mesh together under a cap that runs the length of the hinge. The hinges use a number of fasteners to attach the door to the frame from top to bottom to distribute a door’s weight more evenly along the frame to ...

  6. Domra - Wikipedia

    en.wikipedia.org/wiki/Domra

    Tamara Volskaya is considered to be one of the leading contemporary performers on the 4 string domra. She is a Merited Artist of Russia, a Laureate of the USSR competition, and a professor at the Mussorgsky Ural State Conservatory in Yekaterinburg, Russia.

  7. Owner's manual - Wikipedia

    en.wikipedia.org/wiki/Owner's_manual

    2007 Toyota Yaris hatchback owner's manual 1919 Ford Motor Company car and truck operating manual. An owner's manual (also called an instruction manual or a user guide) is an instructional book or booklet that is supplied with almost all technologically advanced consumer products such as vehicles, home appliances and computer peripherals.

  8. Dorma (character) - Wikipedia

    en.wikipedia.org/wiki/Dorma_(character)

    Dorma was the beloved of Namor, Prince of Atlantis. In Sub-Mariner #36 (April 1971), Namor married Dorma — and discovered that the woman that he married was actually his disguised enemy Llyra, who murdered the real Dorma by bringing the water-breathing bride to the surface and causing her to suffocate in the open air. [9]

  9. Manual vacuum cleaner - Wikipedia

    en.wikipedia.org/wiki/Manual_vacuum_cleaner

    The manual vacuum cleaner was a type of non-electric vacuum cleaner, using suction to remove dirt from carpets, being powered by human muscle, similar in use to a manual lawn mower. Its invention is dated to the second half of the 19th century, when patents were granted to inventors in the United States, Britain, France, and elsewhere.