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A sliding electric gate with electric motor and backup battery in case of mains failure. Note also the Infrared obstacle sensor located on the wall to prevent the gate from closing while a vehicle or other obstacle is in the way.
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 1970s.
A metal doorframe with a strike plate built in: in other doors this would be a metal strikeplate in a wooden doorframe. The term door security or door security gate may refer to any of a range of measures used to strengthen doors against door breaching, ram-raiding and lock picking, and prevent crimes such as burglary and home invasions.
A Gatehouse with 2 sliding security gates monitored entry in and out of the facility. Youth were housed in dormitory style buildings known as "Cottages". When open the facility consisted of a Cafeteria, Gymnasium, Infirmary, Living Quarters (Cottages), Educational Buildings, Swimming Pool, Recreation Buildings, Administrative Facilities ...
The tenons of the gates at Balawat were sheathed with bronze (now in the British Museum). These doors or gates were hung in two leaves, each about 2.54 m (100 in) wide and 8.2 m (27 ft) high; they were encased with bronze bands or strips, 25.4 cm (10.0 in) high, covered with repoussé decoration of figures. The wood doors would seem to have ...
Existing home sales rose 4.8% last month, from October, to a seasonally adjusted annual rate of 4.15 million, the National Association of Realtors said Thursday. The latest home sales topped the 4 ...
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