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  2. Swing-door operator - Wikipedia

    en.wikipedia.org/wiki/Swing-door_operator

    Permanently engaged—the motor driven mechanism (the opener portion) is always joined to the closer (if present) and to the door. When opening the door manually, the user is also driving the opener portion, so the opening is rough and noisy. Electro-hydraulic types are inherently quiet and smooth during manual opening, as the motor and pump ...

  3. Chamberlain Group - Wikipedia

    en.wikipedia.org/wiki/Chamberlain_Group

    Chamberlain — the company's do-it-yourself line of garage door openers. LiftMaster — the company's line of garage door openers for professional installers. Raynor — the company's line of garage door openers for professional installers. This line of professional installers is slightly less common than LiftMaster.

  4. The Genie Company - Wikipedia

    en.wikipedia.org/wiki/The_Genie_Company

    Overhead Door Corporation purchased the company in 1994. [2] The Genie Company is headquartered in Mt. Hope, Ohio. [3] The company distributes its openers & accessories through professional dealers and retailers throughout the United States and Canada. [4] The company President is Michael Noyes. Genie's factory is located in nearby Baltic, Ohio.

  5. Garage door opener - Wikipedia

    en.wikipedia.org/wiki/Garage_door_opener

    The electric overhead garage door opener was invented by C.G. Johnson in 1926 in Hartford City, Indiana. [1] Electric Garage Door openers did not become popular until Era Meter Company of Chicago offered one after World War II where the overhead garage door could be opened via a key pad located on a post at the end of the driveway or a switch inside the garage.

  6. Sliding door operator - Wikipedia

    en.wikipedia.org/wiki/Sliding_door_operator

    The operator is placed in the space above the sliding door. An electric motor, geared down to get a lower speed and a higher torque, drives a pulley at one end of a belt. The door is clamped to the belt. To open the door, the motor turns the pulley, which in turn turns the belt, which in turn drags the door. To close the door, the reverse occurs.

  7. Garage door - Wikipedia

    en.wikipedia.org/wiki/Garage_door

    Sectional garage door Up-and-over garage door Garage Door Hardware. A garage door is a large door to allow egress for a garage that opens either manually or by an electric motor (a garage door opener). Garage doors are frequently large enough to accommodate automobiles and other vehicles. The operating mechanism is usually spring-loaded or ...

  8. Door closer - Wikipedia

    en.wikipedia.org/wiki/Door_closer

    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. Automatic types use electricity to regulate door swing behavior. Door closers can be linked to a building's fire and security alarm systems. [2]

  9. Car door - Wikipedia

    en.wikipedia.org/wiki/Car_door

    Open doors on a Chrysler Airflow. Car doors are designed to facilitate ingress and egress by car passengers. [1]Unlike other types of doors, the exterior side of the vehicle door contrasts in its design and finish from its interior side (the interior part is typically equipped with a door card (in British English) or a door panel (in American English) that has decorative and functional features.