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A Belleville washer is a type of spring shaped like a washer. It is the shape, a cone frustum, that gives the washer its characteristic spring. The "Belleville" name comes from the inventor Julien Belleville who in Dunkerque, France, in 1867 patented a spring design which already contained the principle of the disc spring.
A washer with a "wave" in the axial direction, which provides spring pressure when compressed. Wave washers, of comparable size, do not produce as much force as Belleville washers. In Germany, they are sometimes used as lock washers but they are less effective than other choices. [a] [8] Split washer or spring lock washer
Much simplified was the suspension, which was intended to be based on the concept of using conical-spring Belleville washers for the E-series AFVs as a whole. These were simply bolted on to the chassis and could be easily removed for repair or replacement. This suspension system was later used on the Swiss Panzer 61. A most interesting aspect ...
A coil spring with a variable rate, usually achieved by having unequal distance between turns so that as the spring is compressed one or more coils rests against its neighbour. Rubber band A tension spring where energy is stored by stretching the material. Spring washer Used to apply a constant tensile force along the axis of a fastener ...
The 63A used a stack of Belleville spring washers to absorb some of the shock and bounce when the firing pin struck the primer. By changing the configuration of the washers, a higher spring rate was achieved, and this was the solution for the bulk of the misfires. The weapon, when cold, would fire at about 650 rounds per minute (rpm).
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