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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.
Connex South Eastern Class 423 at Waterloo East in February 2003 c2c Class 312 at Shoeburyness in March 2003. A slam-door train or slammer is a set of diesel multiple units (DMUs) or electric multiple units (EMUs) that were designed before the introduction of automatic doors on railway carriages in the United Kingdom and other countries, which feature manually operated doors.
Stanley Black & Decker, Inc., formerly known as The Stanley Works, is a Fortune 500 American manufacturer of industrial tools and household hardware, and a provider of security products. Headquartered in the Greater Hartford city of New Britain, Connecticut , [ 3 ] Stanley Black & Decker is the result of the merger of The Stanley Works and ...
A door operator may be triggered in various ways: Approach Sensor (such as a radar sensor) - the door opens when a user approaches it. Pushbutton - the door opens when a user presses a button. Access control - the door opens when an access control system determines the user is authorized to go through. Automatically (in the case of elevators).
The following articles contain lists of problems: List of philosophical problems; List of undecidable problems; Lists of unsolved problems; List of NP-complete problems; List of PSPACE-complete problems
Stanley is a well known brand of tools and has produced millions of hand planes, saws, rulers, try squares, chisels, screwdrivers, and many other types of tools for consumer and for industrial use. Their innovations include the Bailey plane, the Surform shaper , the PowerLock tape measure , the utility knife , and an unusual multitool known as ...