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The key will then remain trapped until the gate or door is closed. A personnel or safety key can be released from the access lock, this ensures that the gate or door can not be closed and the initial key released until this personnel or safety key is returned (assuming that no duplicate keys are available). This provides increased operator safety.
Pages in category "Privately held companies based in California" The following 200 pages are in this category, out of approximately 440 total. This list may not reflect recent changes .
Trapped key interlock switchgear door. An interlock is a feature that makes the state of two mechanisms or functions mutually dependent. It may consist of any electrical or mechanical devices, or systems. In most applications, an interlock is used to help prevent any damage to the machine or to the operator handling the machine.
Calico; California Pizza Kitchen; Callaway Golf Company; CamelBak; Cannabis Science; CapitalG; Carbon Lighthouse; Carbon Sciences; CareFusion; CASA 0101; Cathay Bank
Manufacturing companies based in San Jose, California (4 C, 53 P) Manufacturing companies based in Greater Los Angeles (9 C, 74 P) Manufacturing companies based in the San Francisco Bay Area (15 C, 33 P)
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”.
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