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2. Spring (device) - Wikipedia

   en.wikipedia.org/wiki/Spring_(device)

   Spring (device) The English longbow – a simple but very powerful spring made of yew, measuring 2 m (6 ft 7 in) long, with a 470 N (105 lbf) draw weight, with each limb functionally a cantilever spring. Force (F) vs extension (s). [citation needed] Spring characteristics: (1) progressive, (2) linear, (3) degressive, (4) almost constant, (5 ...

3. Belleville washer - Wikipedia

   en.wikipedia.org/wiki/Belleville_washer

   A Belleville washer, also known as a coned-disc spring, [ 1] conical spring washer, [ 2] disc spring, Belleville spring or cupped spring washer, is a conical shell which can be loaded along its axis either statically or dynamically. A Belleville washer is a type of spring shaped like a washer. It is the shape, a cone frustum, that gives the ...

4. Spring steel - Wikipedia

   en.wikipedia.org/wiki/Spring_steel

   Spring steel. Spring steel is a name given to a wide range of steels [1] used in the manufacture of different products, including swords, saw blades, springs and many more. These steels are generally low-alloy manganese, medium-carbon steel or high-carbon steel with a very high yield strength. This allows objects made of spring steel to return ...

5. Rail fastening system - Wikipedia

   en.wikipedia.org/wiki/Rail_fastening_system

   A rail fastening system is a means of fixing rails to railroad ties ( North America) or sleepers ( British Isles, Australasia, and Africa ). The terms rail anchors, tie plates, chairs and track fasteners are used to refer to parts or all of a rail fastening system. The components of a rail fastening system may also be known collectively as ...

6. Piano wire - Wikipedia

   en.wikipedia.org/wiki/Piano_wire

   Piano wire. Piano wire, or "music wire", is a specialized type of wire made for use in piano strings but also in other applications as springs. It is made from tempered high-carbon steel, also known as spring steel, which replaced iron as the material starting in 1834. Piano wire has a very high tensile strength to cope with the heavy demands ...

7. Pneumatic valve springs - Wikipedia

   en.wikipedia.org/wiki/Pneumatic_valve_springs

   Racing engines often fail at high rotational speeds because mechanical springs are unable to retract the valves quickly enough to provide clearance for the piston. Renault's pneumatic valve technology replaced steel springs with light weight compressed air bellows. These could retract valves more quickly and reduce the possibility of piston ...