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The term is most often used in items like lockers, where it is contrasted with the much more secure three-point locking, which uses movable rods to secure the top and bottom of the door when the door is locked, and the term is not normally used in situations where single-point locking is the only option normally found.
The Nanoracks Bishop Airlock is a commercially funded airlock module launched to the International Space Station on SpaceX CRS-21 on 6 December 2020. [3] [4] It was berthed to the Tranquility module on 19 December 2020 by the Canadarm2. [5] The module was built by Nanoracks, Thales Alenia Space, and Boeing. [6]
Three point lock are also commonly used in wardrobes, like from Hettich [6] [7] Single-point locking may provide adequate security for some situations on tiered lockers, as the doors are shorter, and therefore more difficult to force open; however, the taller doors of full length lockers and cabinets are more susceptible to the application of leverage.
The Quest Airlock consists of two segments, the "Equipment lock" that stores spacesuits and equipment, and the "Crew Lock" from which astronauts can exit into space. [4] It was derived from the Space Shuttle airlock , although it was significantly modified to waste less atmospheric gas when used.
Grid location selection has an advantage over direct point cutting because the latter is sensitive to overlay and stochastic edge placement errors, which may distort the line ends. [16] [17] Vias located at staggered grid locations are also expected for routing and patterning convenience. [139] [140] SALELE (Self-aligned Litho-Etch-Litho-Etch.
Railway interlocking is of British origin, where numerous patents were granted. In June 1856, John Saxby received the first patent for interlocking switches and signals. [2] [3]: 23–24 In 1868, Saxby (of Saxby & Farmer) [4] was awarded a patent for what is known today in North America as “preliminary latch locking”.
In British, Australian, French, and Swiss railway signalling, an Annett's key is a form of trapped-key interlocking that locks levers or other items of signalling apparatus, thereby serving as a portable form of interlocking. The purpose is to prevent access from sidings to the running line without authority. [1]