Ads
related to: automatic door maintenance near me location list mapbestopchoices.com has been visited by 1M+ users in the past month
topick-choices.net has been visited by 1M+ users in the past month
referalanswer.com has been visited by 100K+ users in the past month
Search results
Results from the WOW.Com Content Network
An automatic door, also known as an auto door, is a door that opens automatically, without the need for human intervention or usually upon sensing the approach of a person. A person can be detected by microwave pulses, infrared sensors , or pressure-sensing pads.
The operator is placed in the space above the sliding door. An electric motor, geared down to get a lower speed and a higher torque, drives a pulley at one end of a belt. The door is clamped to the belt. To open the door, the motor turns the pulley, which in turn turns the belt, which in turn drags the door. To close the door, the reverse occurs.
In North America, the Door and Access Systems Manufacturing Association (DASMA) defines high-performance doors as non-residential, powered doors, characterized by rolling, folding, sliding or swinging action, that are either high-cycle (minimum 100 cycles/day) or high-speed (minimum 20 inches(508 mm)/second), and two out of three of the ...
Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.
The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.
Upgrade to a faster, more secure version of a supported browser. It's free and it only takes a few moments:
Ads
related to: automatic door maintenance near me location list mapbestopchoices.com has been visited by 1M+ users in the past month
topick-choices.net has been visited by 1M+ users in the past month
referalanswer.com has been visited by 100K+ users in the past month