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The first known example of a tumbler lock was found in the ruins of the Palace of Khorsabad built by king Sargon II (721–705 BC.) in Iraq. [1] Basic principles of the pin tumbler lock may date as far back as 2000 BC in Egypt; the lock consisted of a wooden post affixed to the door and a horizontal bolt that slid into the post.
A wheel hub with a castellated nut secured in the center using a cotter pin to prevent it from unscrewing. A positive locking device is a device used in conjunction with a fastener in order to positively lock the fastener.
Dainese D-air is an electronically actuated airbag system developed for motorcyclists. Development began in 1995 and the first working prototype was tested on a race track in 2000. Dainese D-air activated for the first time in an official race when the Italian rider Simone Grotkyj crashed during a 2007 MotoGP practice session at the Valencia ...
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The installation of a mortise lock can be undertaken by an average homeowner with a working knowledge of basic woodworking tools and methods. Many installation specialists such as carpenters use a dedicated mortising jig which makes precise cutting of the pocket a simple operation, but the subsequent installation of the external trim can still ...
[4] Bottom pin See key pin. Break A break in the pins is a separation in one or more sections of the pin used to encode the lock for a specific key or set of keys in a master keying system. Driver pin In a pin tumbler lock, the driver pin is in contact with the spring and interferes with the rotation of the plug when no key is inserted. When ...
Shrink plastic dual in-line package (SPDIP) – A denser version of the PDIP with a 0.07 in (1.778 mm) lead pitch. Skinny dual in-line package (SDIP or SPDIP [ 6 ] ) – Sometimes used to refer to a "narrow" 0.300 in. (or 300 mil ) wide DIP, normally when clarification is needed e.g. for DIP with 24 pins or more, which usually come in "wide" 0. ...
The IEC 62196-2 Type 2 connector (sometimes referred to as Mennekes for the German company that designed it) is used for charging electric vehicles using AC power, mainly within Europe, Australia, NZ and many other countries outside of North America. The Type 2 connector was adopted as the EU standard in 2013, with full compliance required by 2025.