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2. Garage door - Wikipedia

   en.wikipedia.org/wiki/Garage_door

   The most common causes of injury from garage door systems include falling doors, pinch points, improperly adjusted opener force settings, and safety eyes, attempts at do-it-yourself repair without the proper knowledge or tools, and uncontrolled release of spring tension (on torsion spring systems). A garage door with a broken spring or the ...

3. Torsion spring - Wikipedia

   en.wikipedia.org/wiki/Torsion_spring

   Garage Door Sectional Torsion Spring A mousetrap powered by a helical torsion spring Video of a model torsion pendulum oscillating. A torsion spring is a spring that works by twisting its end along its axis; that is, a flexible elastic object that stores mechanical energy when it is twisted.

4. Garage door opener - Wikipedia

   en.wikipedia.org/wiki/Garage_door_opener

   The electric overhead garage door opener was invented by C.G. Johnson in 1926 in Hartford City, Indiana. [1] Electric Garage Door openers did not become popular until Era Meter Company of Chicago offered one after World War II where the overhead garage door could be opened via a key pad located on a post at the end of the driveway or a switch inside the garage.

5. 21 Winter Casserole Recipes You Can Make in an Hour or Less

   www.aol.com/21-winter-casserole-recipes-hour...

   Think of this creamy skillet casserole as a one-pan taco. The corn tortillas crisp up under the broiler, adding crunch to go with the creamy filling.

6. DC leaders, NBA commissioner celebrate the start of an $800M ...

   www.aol.com/dc-mayor-corrects-misinformation...

   Washington Capitals and Wizards owner Ted Leonsis, NBA Commissioner Adam Silver, District of Columbia Mayor Muriel Bowser and other officials celebrated the start of an $800 million downtown arena ...

7. Chamberlain Group - Wikipedia

   en.wikipedia.org/wiki/Chamberlain_Group

   Clicker — a line of universal garage door remotes. Chamberlain, LiftMaster, and Craftsman have interchangeable parts, primarily the gear and circuit boards. The greatest difference between the brands is that Chamberlain and Craftsman operate on a square shaped split-rail system, while LiftMaster consists of one single solid piece of inverted ...