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A garage door with a broken spring or the wrong strength can fall. Because the effective mass of the door increases as the garage door sections transfer from the horizontal to vertical door tracks, a falling garage door accelerates rapidly. A free-falling garage door can cause severe injury or death.
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.
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]
A garage door is a large door on a garage that can either be opened manually or by a garage door opener. Garage doors are necessarily large to allow passage of automobiles and/or trucks. In 1921, C. G. Johnson of Detroit invented the "Overhead Door", the first upward-lifting garage door. To market the garage door, Johnson mounted a small ...
Our master carpenter checks out the new garage door with dual safety reversal features. Plumber Maura Marshall and Richard Trethewey go over the new bath china, kitchen sinks and recycled radiators. The next day, Lauren shows off the new Arts-and-Crafts style lighting fixture hanging in the arcade, and we take a tour of the Shingle-style house ...
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The roof of a metal commercial building was pulled back and its overhead door was blown in. A number of soccer goals and dugouts were blown over and some fencing was damaged. The entire roofing structure of one apartment building was removed, the façade was blown off another building, and several other structures suffered shingle or fascia ...
The fifth-generation Chevrolet Camaro is a pony car that was manufactured by American automobile manufacturer Chevrolet from 2010 to 2015 model years. [6] It is the fifth distinct generation of the muscle/pony car to be produced since its original introduction in 1967.
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