Ads
related to: automatic door closer chainebay.com has been visited by 1M+ users in the past month
- Under $10
Fun Stuff. Ships Free.
Brand New. Guilt Free.
- Fashion
The World is Your Closet.
Shop Your Top Fashion Brands.
- Home & Garden
From Generators to Rugs to Bedding.
You’ll Find Everything You Need
- Motors
New and Used Vehicles and Parts.
Find Items from Every Automaker.
- Under $10
myknobs.com has been visited by 10K+ users in the past month
Search results
Results from the WOW.Com Content Network
A door closer is a mechanical device that regulates the speed and action of a door’s swing. [1] Manual closers store the force used to open the door in some type of spring and reuse it to close the door. Automatic types use electricity to regulate door swing behavior. Door closers can be linked to a building's fire and security alarm systems. [2]
Door chain - A device to secure door opening; Door closer – Mechanical or electromagnetic device to close an open door (in the event of a fire) [3] Door opener - Automatic door opening device activated by motion sensors or pressure pads; Door damper – A hydraulic device employed to slow the door's closure; Door knocker
Some are built on top of a standard door closer. To open the door, the operator forces the closer in the opening direction. Then, the closer closes the door. The user may open the door manually, using just the door closer. In case of power failure while the door is open, the closer itself closes the door. Some are built without a door closer.
The automatic door used a mat actuator. In 1960, they co-founded Horton Automatics Inc and placed the first commercial automatic sliding door on the market. [5] With the invention of the Gunn diode, microwave motion detectors became common in automatic doors in the 1970s. [6] [7] In 1980, the first automatic door using an infrared sensor was ...
A door chain, security chain, or security door chain or chain door interviewer [1] consists of a small chain attached to the door frame, which attaches to a track on the door for security purposes. It is a type of lock that is often used along with other types of locks to secure a door. [ 2 ]
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
Ads
related to: automatic door closer chainebay.com has been visited by 1M+ users in the past month
myknobs.com has been visited by 10K+ users in the past month