The Cotter Key was invented by an Irish man named John Cotter in 1922. Originally used to hold fastners together on cabinets, Cotter keys found other purposes that seemed to be better suited than for that reason, such as, holding the Nuts on a bolt.
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It is a cotter key or cotter pin (not carter). In the United States, cotter pin (also known as a cotter key[1] or a split pin) is a metal fastener with two tines that are bent during installation, similar to a staple or rivet. Typically made of wire with a half-circular cross section, cotter pins come in multiple sizes and types.
A key is generally driven parallel to the shaft whereas a cotter is driven perpendicular to the shaft. A key is subjected to torsion whereas a cotter is subjected to tensile and compressive forces. A key resists shear over a longitudinal section whereas a cotter resists shear over two transverse sections. A key joint is used to transmit a positive drive b/w two rotating parts whereas a cotter joint is used to transmit axial pull or push b/w to rods and they DO NOT rotate.
Dawn Cotter goes by Cotter.
Brad Cotter's birth name is Thomas Bradley Cotter.
Dawn Cotter's birth name is Dawn Marie Cotter.
Jared Cotter's birth name is Jared Lincoln Cotter.
The Allen key, or hex key, was invented in 1910. It was invented by William G. Allen, but first commercialized by P. L. Robertson.
Henry G. Key invented the first automobile key, hence the name, in 1932
Elisabeth Cotter was born in 1965.
Cotter Bridge was created in 1930.
Andrew Cotter was born in 1973.