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2. Portcullis - Wikipedia

   en.wikipedia.org/wiki/Portcullis

   A portcullis (from Old French porte coleice 'sliding gate') is a heavy, vertically closing gate typically found in medieval fortifications. [1] A portcullis gate is constructed of a latticed grille , made of wood or metal or both, which slides down grooves inset within each jamb of the gateway.

3. Panama Canal locks - Wikipedia

   en.wikipedia.org/wiki/Panama_Canal_locks

   The original gate machinery consisted of a huge drive wheel, powered by an electric motor, to which was attached a connecting rod, which in turn attached to the middle of the gate. [8] The gates are hollow and buoyant, much like the hull of a ship, and are so well balanced that two 19 kW (25 hp) motors are enough to move each gate leaf. If one ...

4. Electric gate - Wikipedia

   en.wikipedia.org/wiki/Electric_gate

   Electric gates alone, however solid and imposing they may be, cannot guarantee a completely secure environment electric locks, are often needed to boost the locking effectiveness of the gate motors. Electric gates are recommended to be used in combination with other security features to install a full security system.

5. Gates Corporation - Wikipedia

   en.wikipedia.org/wiki/Gates_Corporation

   Gates Corporation sign at company headquarters in 1144 Fifteenth, Denver, Colorado. Gates Industrial Corporation plc, based in Denver, Colorado, is a manufacturer of power transmission belts and fluid power products, which are used in diverse industrial and automotive applications. [1]

6. Bar gate - Wikipedia

   en.wikipedia.org/wiki/Bar_gate

   The other technologies are often manufacturer specific. These electromechanical devices come with 24-volt direct-current drive units which can run continuously without generating heat, so electromechanical bar gates can be operated continuously and in an intensive duty cycle. An automatic bar gate can be operated through: Push button; Key Selector

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!