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2. Door closer - Wikipedia

   en.wikipedia.org/wiki/Door_closer

   Self-closing hinges are an alternative to using a door closer. A self-closing hinge combines door closers and spring hinges with an optional hold open feature into one component. These closer hinges eliminate the visual and physical clutter of using additional devices, as well as reduce maintenance problems associated with overhead and in-floor ...

3. Hinge - Wikipedia

   en.wikipedia.org/wiki/Hinge

   Doors with these hinges may be called haar-hung doors. Self-closing hinge This is a spring-loaded hinge with a speed control function. The same as spring hinge, usually use spring to provide force to close the door and provide a mechanical or hydraulic damper to control door close speed. That can prevent door slamming problem while auto closes ...

4. Geared continuous hinge - Wikipedia

   en.wikipedia.org/wiki/Geared_continuous_hinge

   A geared continuous hinge is a type of continuous hinge used mostly on doors in high-traffic entrances and features gear teeth that mesh together under a cap that runs the length of the hinge. The hinges use a number of fasteners to attach the door to the frame from top to bottom to distribute a door’s weight more evenly along the frame to ...

5. Pintle - Wikipedia

   en.wikipedia.org/wiki/Pintle

   In electrical cubicle manufacture, a pintle hinge is a hinge with fixed and moving parts. The hinge has a pin - the pintle - which can be both external and internal. The most common type consists of three parts, one part on the body of the cubicle, one part on the door, and the third being the pintle.

6. 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!

7. Automatic door - Wikipedia

   en.wikipedia.org/wiki/Automatic_door

   Heron used a similar application to open the gates to the city. [2] In 1931, engineers Horace H. Raymond and Sheldon S. Roby of the tool and hardware manufacturer Stanley Works designed the first model of an optical device triggering the opening of an automatic door. The invention was patented and installed in Wilcox's Pier Restaurant in West ...