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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.
Model 45 may refer to: Model 45A, an experimental rifle developed by the U.S. Army in 1945. Beech Model 45, better known as the T-34 Mentor, an American basic training aircraft. Fairchild Model 45, an American utility aircraft of the 1930s. Firestone Model 45, better known as the XR-9, an American experimental helicopter of the late 1940s.
Raynor — the company's line of garage door openers for professional installers. This line of professional installers is slightly less common than LiftMaster. Craftsman — re-branded Chamberlain models sold at Sears. Those products have a "139" model prefix to denote that the Chamberlain Group made them for Sears.
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.
The majority of the operators open the door directly or through an arm. Overhead concealed mount—the operator is mounted above the door and rotates the door directly, through its pivot. Surface mount, push (scissor arm)—the operator is mounted on the wall above the door, on the approach side and pushes the door with a linkage of 2 arms.
The ALP-45A locomotives from the 2017 and 2020 orders will be numbered 4535–4559. On December 15, 2020, the first unit from the order, #4535, has left the Kassel factory and was delivered in January 2021.
Electric overhead traveling cranes or EOT cranes are a common type of overhead crane, also called bridge cranes. They consist of parallel runways, much akin to rails of a railroad, with a traveling bridge spanning the gap. [1] EOT cranes are specifically powered by electricity.
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.