door openers

Noun

door opener (plural door openers)

1. The control mechanism by which a door is latched and unlatched.
   • Last, door systems are examined, particularly locking and latching mechanisms, door openers and door closers.1988, United States. National Bureau of Standards, Journal of Research of the National Bureau of Standards, page 336
2. Any of various devices designed to make opening a door easier.
   • Car door openers which are said to permit easy one-man operation are available. These devices consist of a light chain fall for attaching to the door handle. When door openers are used, the fixed end of the fall will not be fastened to a car ladder or grab iron.1962, United States. Department of the Air Force, Accident Prevention Handbook: Ground Safety, page 13-5
   1. Any of various devices to automatically open a door in response to a sensor or signal sent from a controller.
      • A radio control for a door opener operating above 70 MHz manufactured after March 24, 1971 shall be certificated pursuant to Subpart B of this part.1959, United States. Federal Communications Commission, Rules and Regulations - Volume 2, page 119
   2. A crowbar-like tool used by firefighters to quickly force locked doors to open.
      • The two most common types of door openers used are the "Hale" and the "Detroit".1947, Connecticut. Bureau of Vocational Education., Regional Firemen Training Schools - Volume 2, page 8
3. Someone who opens doors.
   • Imagine our language type as a "door opener." There are two kinds of door openers: “interpreter openers" and "compiler openers." An interpreter opener has a rough job. He must carry a large bag of keys wherever he goes.1981, David Fox, Mitchell Waite, Pascal Primer, page 16
4. Any tactic, approach, or giveaway item employed by a salesman to capture the interest of a potential customer.
   • […] when working the territory cold, you will find these little notes great door openers.1922, A Salesman's Correspondence, page 60

See all 8 meanings of door opener