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2. Door closer - Wikipedia

   en.wikipedia.org/wiki/Door_closer

   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]

3. Swing-door operator - Wikipedia

   en.wikipedia.org/wiki/Swing-door_operator

   Types. There are 3 basic types of swing door operators: Full Energy – It opens and closes the door at full speed. Low Energy – It opens and closes the door at reduced speed to limit the kinetic energy of the moving door to levels deemed safe for disabled users. Power Assist – This is a version of the low-energy operator.

4. Allison Transmission - Wikipedia

   en.wikipedia.org/wiki/Allison_Transmission

   Allison Transmission Holdings Inc. is an American manufacturer of commercial duty automatic transmissions and hybrid propulsion systems. Allison products are specified by over 250 vehicle manufacturers and are used in many market sectors, including bus, refuse, fire, construction, distribution, military, and specialty applications. With ...

5. List of Aisin transmissions - Wikipedia

   en.wikipedia.org/wiki/List_of_Aisin_transmissions

   Aisin automatic transmissions are manufactured by Aisin-Warner (AW), and which was established in 1969 as a joint venture between Aisin and BorgWarner.While Aisin Seiki manufactures a variety of automotive components including automatic transmissions for heavy duty vehicle applications, Aisin AW manufactures automatic transmissions for light vehicle applications, including hybrid electric ...

6. Automatic door - Wikipedia

   en.wikipedia.org/wiki/Automatic_door

   Automatic door. A pair of automatic doors. 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. [1]

7. List of GM transmissions - Wikipedia

   en.wikipedia.org/wiki/List_of_GM_transmissions

   1981–1990 TH200-4R. 1982–1993 TH700R4/4L60. Heavy-duty rear wheel drive. 1971–1994 3L80HD (heavy duty version of TH400) Light-duty rear wheel drive. 1969–1998 TH180/TH180C / 3L30 — European/Asian model. Used/manufactured by Holden as the Trimatic. Longitudinal front wheel drive. 1966–1978 TH425 — 3-speed.