Power windows or electric windows are automobile windows which can be raised and lowered by depressing a button or switch, as opposed to using a hand-turned crank handle. GlassWindowjpg|thumb|right|190px|A stained glass panel depicting Biblical scenes at a historic church in Scotland]] A window is an opening A switch is a mechanical device used to connect and disconnect an electric Circuit at will A crank is an arm at right angles to a shaft (an Axle or spindle by which motion is imparted to or received from the shaft it is also used to change circular into Reciprocating
The first electric power windows were introduced around 1946 by Lincoln. Year 1946 ( MCMXLVI) was a Common year starting on Tuesday (link will display full 1946 calendar of the Gregorian calendar. Lincoln is an American Luxury car manufacturer operated under the Ford Motor Company. [1] These are driven by a small electric motor inside the door and have come to be universal in the industry. An electric motor uses Electrical energy to produce Mechanical energy. Prior to that date, in the few vehicles offering this feature, the windows were driven by hydraulics or off the engine vacuum. Hydraulic machinery are machines and tools which use Fluid power to do work Automobile accessory power can be produced by several different means In the 1950s, electric power was also applied to the tailgate window, in many station wagons. Tailgate is an American English word denoting the door or 'gate' at the back of a wagon, Pickup truck, SUV or other similar type of Vehicle A station wagon (or simply wagon) in American, Australian, Canadian and New Zealand usage and an estate car (or just estate
In a typical installation, there is an individual switch at each window and a set of switches in the driver's door, so the driver can operate all the windows. However, some models like Saab and Holden have used switches located in the center console, where they are accessible to all the occupants. Saab AB is an Aerospace and defense company based in Sweden. History "Svenska Aeroplan AB (aktiebolaget" ( Swedish for GM Holden Ltd is an Australian automaker based in Port Melbourne Victoria. In this case, the door-mounted switches can be omitted.
Power windows are usually inoperable when the car is not running as the electrical system is not 'live' once the ignition has been turned off. However, many modern cars have a time delay feature, first introduced by Cadillac in the 1980s, called retained accessory power. Cadillac is a Brand of Luxury vehicles owned by General Motors. This allows operation of the windows and some other accessories for ten minutes or so after the engine is stopped. Another fairly recent innovation, pioneered by Nissan at about the same time, is the express-down window, which allows the window to be fully lowered with one tap on the switch, as opposed to holding the switch down until the window retracts.
Power windows have come under some scrutiny after several fatal accidents in which children's necks have become trapped, leading to suffocation. The neck is the part of the Body on many limbed Vertebrates that distinguishes the head from the Torso or trunk Some designs place the switch in a location on a handrest where it can be accidentally triggered by a child climbing to place his or her head out of the window. To prevent this, many vehicles feature a driver-controlled lockout switch, preventing rear-seat passengers (usually smaller children) from accidentally triggering the switches. This also prevents kids from using them as toys.
The American National Highway Traffic Safety Administration claims to be working on power window safety regulations, but has not established a date for their introduction. The National Highway Traffic Safety Administration ( NHTSA, often pronounced "nit-suh" is an agency of the Executive Branch of the U
See also
External links
- Power Windows Are Perilous (CBS News)
- Fixing Power Windows
- How Power Windows Work
- Power Window Types
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