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2. Automatic door - Wikipedia

   en.wikipedia.org/wiki/Automatic_door

   In 1954, Dee Horton and Lew Hewitt invented the first sliding automatic door. 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 ...

3. Swing-door operator - Wikipedia

   en.wikipedia.org/wiki/Swing-door_operator

   Shades of blue: standard door closer. Shades of red: opener gears. Gold: motor. Operators use various internal technologies. 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.

4. Americans with Disabilities Act of 1990 - Wikipedia

   en.wikipedia.org/wiki/Americans_with...

   Under Title III of the ADA, all new construction (construction, modification or alterations) after the effective date of the ADA (approximately July 1992) must be fully compliant with the Americans With Disabilities Act Accessibility Guidelines (ADAAG) [13] found in the Code of Federal Regulations at 28 C.F.R., Part 36, Appendix A.

5. Sliding door operator - Wikipedia

   en.wikipedia.org/wiki/Sliding_door_operator

   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.

6. Besam (Assa Abloy) - Wikipedia

   en.wikipedia.org/wiki/Besam_(Assa_Abloy)

   Besam was an international supplier and manufacturer of automatic entrance equipment for commercial, health care and residential buildings owned by Assa Abloy. [1] The product portfolio included automatic doors, automatic swing doors, sliding doors and revolving doors, as well as air curtains and dedicated service and maintenance.

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