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2. Lockrod - Wikipedia

   en.wikipedia.org/wiki/Lockrod

   Patented originally in 1912, the lockrod was first used to secure railroad boxcar doors. Today, sometimes confused with locking bars or bar locks, lockrods have evolved to secure virtually every trailer or container that has a swing door (a door that swings open and closed rather than rolls up). Roll up doors are sometimes used in place of ...

3. Twistlock - Wikipedia

   en.wikipedia.org/wiki/Twistlock

   Twistlock, unlocked v. locked position. A twistlock or twist lock, together with matching corner castings, as defined in norms including ISO 1161:1984, form a standardized (rotating) connector system, for connecting and securing intermodal, and predominantly ISO-standard international shipping containers. The primary uses are to securely stack ...

4. ISO standards for trailer connectors - Wikipedia

   en.wikipedia.org/wiki/ISO_standards_for_trailer...

   Trailer connectors between the trailer and passenger car, light truck or heavy trucks with 12V systems. In Europe, both 7-pin (ISO 1724) and 13-pin (ISO 11446) are common. The 13-pin version being phased in is newer, provides more services than the 7-pin, a more positive locking and also better protection against moisture and contamination.

5. Security seal - Wikipedia

   en.wikipedia.org/wiki/Security_seal

   Security seals are tamper-evident mechanisms that seal valuable material in a room, cabinet, vehicle, or other storage facility. One common use is to seal cargo in transit shipping containers in a way that provides tamper evidence and some level of rudimentary security. Such seals can help to detect theft or contamination, either accidental or ...

6. Fifth-wheel coupling - Wikipedia

   en.wikipedia.org/wiki/Fifth-wheel_coupling

   The fifth-wheel coupling provides the link between a semi-trailer and the towing truck, tractor unit, leading trailer or dolly. The coupling consists of a kingpin, a 2-or- -inch-diameter (50.8 or 88.9 mm) vertical steel pin protruding from the bottom of the front of the semi-trailer, and a horseshoe-shaped coupling device called a fifth wheel ...

7. Lock and key - Wikipedia

   en.wikipedia.org/wiki/Lock_and_key

   A typical modern padlock and its keys. A lock is a mechanical or electronic fastening device that is released by a physical object (such as a key, keycard, fingerprint, RFID card, security token or coin), by supplying secret information (such as a number or letter permutation or password), by a combination thereof, or it may only be able to be opened from one side, such as a door chain.