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Buckling spring

From Wikipedia, the free encyclopedia

A drawing included in the patent for the buckling spring mechanism
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A drawing included in the patent for the buckling spring mechanism

A buckling spring is  a type of keyswitch mechanism, popularized by IBM's keyboards for the PC, PC/AT, 5250 / 3270 terminals, and  other keyboards, the most popular of these being the Model M. it  is described in U.S. Patent 4,118,611  (now expired).

The name refers to the fact that the coil spring tensioning the keycap "buckles", i.e. kinks or  collapses, at a certain point in its downward traverse, providing auditory and  tactile feedback to the keyboard operator.

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STATIC WIKIPEDIA JUNE 2008 on wikipedia2006.classicistranieri.com

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STATIC WIKIPEDIA MARCH 2008 on wikipeda2006classicistranieri.com
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STATIC WIKIPEDIA APRIL 2007 on wikipeda2006classicistranieri.com
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STATIC WIKIPEDIA DECEMBER 2006 on wikipeda2006classicistranieri.com
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STATIC WIKIPEDIA NOVEMBER 2006 on wikipeda2006classicistranieri.com
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