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2. Electric gate - Wikipedia

   en.wikipedia.org/wiki/Electric_gate

   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

3. Falkirk Wheel - Wikipedia

   en.wikipedia.org/wiki/Falkirk_Wheel

   The docking pit is a drydock-like port isolated from the lower canal basin by watertight gates and kept dry by water pumps. [20] When the wheel stops with its arms in the vertical position it is possible for boats to enter and exit the lower caisson when the gates are open without flooding the docking pit. The space below the caisson is empty ...

4. Barricade - Wikipedia

   en.wikipedia.org/wiki/Barricade

   Barricade Gates These gates swing open like a doorway, allowing for passage of people of goods through a run of barricades. Expanding Barricades Designed for indoor use and for use on sites where construction or work is occurring. Easy to move and store these barricades serve as a temporary barricade.

5. Bar gate - Wikipedia

   en.wikipedia.org/wiki/Bar_gate

   Manual gates are sometimes hung in the manner of a normal gate (i.e. hinged horizontally). In some places, bar gates are installed across suburban streets as a traffic calming measure, preventing through traffic, while allowing authorised vehicles such as emergency services and buses to take advantage of the shorter and more direct route.

6. Rotary combination lock - Wikipedia

   en.wikipedia.org/wiki/Rotary_combination_lock

   The dial is connected to an internal mechanism, usually containing three separate wheels with notches, called gates. Each wheel must be aligned to allow a fence to drop into the gates, releasing the lever that holds the lock in place, allowing the lock to open. Generally, this is accomplished by moving the dial to three (or more) positions ...

7. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!