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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.
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 ...
In May 1954, the Alliance Manufacturing Company first produced its own garage door opener and called it Genie. [2] In 1983 the company entered the home and shop vacuum market, and in 1985 it changed its name to Genie Home Products. [2] Overhead Door Corporation purchased the company in 1994. [2] The Genie Company is headquartered in Mt. Hope ...
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A rolling code (or sometimes called a hopping code) is used in keyless entry systems to prevent a simple form of replay attack, where an eavesdropper records the transmission and replays it at a later time to cause the receiver to 'unlock'. Such systems are typical in garage door openers and keyless car entry systems.
A rail fastening system is a means of fixing rails to railroad ties (North America) or sleepers (British Isles, Australasia, and Africa). The terms rail anchors , tie plates , chairs and track fasteners are used to refer to parts or all of a rail fastening system.
However, on most railway vehicles using overhead wire, the trolley pole has given way to the bow collector or, later, the pantograph, a folding metal device that presses a wide contact pan against the overhead wire. While more complex than the trolley pole, the pantograph has the advantage of being almost free from dewiring, being more stable ...
A garage door opener is a motorized device that opens and closes a garage door. Most are controlled by switches on the garage wall, as well as by a remote control carried in the garage owner's vehicle. In 1926, the electric garage door opener was invented by C.G. Johnson, the inventor of the garage door and founder of the Overhead Door ...
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