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One of the first electric gates was invented by a Canadian Fred W. Watson in 1881. It was designed to be used for railway systems. [2] In 1884, a number of American newspapers reported that the French railway companies were about to adopt an electric gate opener.
Thai Summit Group (Thai: กลุ่มบริษัทไทยซัมมิท) is a Thai manufacturing company. It is a manufacturer of automotive, motorcycle, electrical appliance, and agricultural machinery. The company was founded in 1977. Its headquarters is in Samut Prakan, Thailand.
When opening the door manually, the opener portion is still, so the opening is smooth and quiet. 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.
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. 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.
The automatic door used a mat actuator. In 1960, they co-founded Horton Automatics Inc and placed the first commercial automatic sliding door on the market. [5] With the invention of the Gunn diode, microwave motion detectors became common in automatic doors in the 1970s. [6] [7] In 1980, the first automatic door using an infrared sensor was ...
Automatic Systems has been the first company to use the principle of the crankshaft rod (movement transmission by crankshaft-rod) in the development and manufacturing of automatic barriers and gates. [16] This system, already in use in numerous applications, has become a reference in access control equipment for many years ahead. [17]
Chamberlain Group (CGI), the corporate parent company to LiftMaster, Chamberlain, Merlin, and Grifco, designs and engineers residential garage door openers, commercial door operators, security cameras, and gate entry systems.
Thailand's recovery from the 1997–1998 Asian financial crisis depended mainly on exports, among various other factors. As of 2012, the Thai automotive industry was the largest in Southeast Asia and the 9th largest in the world. [4] [5] [6] The Thailand industry has an annual output of near 1.5 million vehicles, mostly commercial vehicles. [6]
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