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Driveway gate openers can be the rollback (sliding) type that retracks a gate along the fence or wall on wheels or bearing, or the swing type that draws the gate open or closed on hinges. They are usually operated by a remote controller or a sensor
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In 1954, Dee Horton and Lew Hewitt invented the first sliding automatic 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.
Gate from Bucharest (Romania) Art Nouveau gate of Castel Béranger (Paris) Candi bentar, a typical Indonesian gate that is often found on the islands of Java and Bali. A gate or gateway is a point of entry to or from a space enclosed by walls. The word derived from old Norse "gat" [1] meaning road or path; But other terms include yett and port.
Bar gates, especially manually operated ones, are often counterweighted to allow easier manual control. [7] Bar gates are frequently paired end to end or closely offset to block traffic in both directions. Some bar gates also have a second arm which hangs 30 to 40 cm below the upper arm when lowered to increase approach visibility.
A wicket gate is also used for a stand-alone gate that provides convenient secondary access, for example to the rear of a walled park or garden. The cricket term "wicket" comes from this usage. [7] "The Wicket Gate" is an important feature in John Bunyan's 17th-century Christian allegory The Pilgrim's Progress. As the first stage of the journey ...
The typical work-flow of an automatic border control system (eGate) [1] Automated border control systems (ABC) or eGates are automated self-service barriers which use data stored in a chip in biometric passports along with a photo or fingerprint taken at the time of entering the eGates to verify the passport holder's identity.
Morley Gate Garita as seen during construction in 1930. The Nogales Port of Entry evolved over time, rather than being planned. When an international fence divided Nogales in the early 20th century, vehicles were inspected at a gate at Grand Avenue, trains were inspected just east of there, and pedestrians were inspected further to the east at Morley Avenue.
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