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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.
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 ...
When the Courier was introduced, it came standard with a 1.8-liter overhead-cam engine, which produced 74 hp (55 kW) at 5,070 rpm, and 92 lb-ft (125 Nm) at 3,500 rpm. A four-speed manual transmission was standard, and a three-speed automatic was optional. A five-speed manual option was introduced for the 1976 model year.
It is a 659 cubic inches (10.8 L) overhead cam turbocharged inline six-cylinder diesel engine. It develops 325 to 425 horsepower (242 to 317 kW) and 1,260 to 1,560 pound force-feet (1,710 to 2,120 N⋅m) of torque. [2] The Mack MP8 engine is the largest engine in the TerraPro. It is a 783 cubic inches (12.8 L) overhead cam turbocharged inline ...
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A typical single-car garage roller door has a preloaded spring inside the rolling mechanism. The spring reduces the effort required to open the door. Oversized roller doors in commercial premises are not sprung (except in the US), and a manual pulley and chain system or a geared motor is used to raise and lower (roll up and roll down) the door.
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