US PATENT SUBCLASS 248 / 575
.~ Adjustable preloading of resilient means

Current as of: June, 1999
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248 /   HD   SUPPORTS

560  DF  RESILIENT SUPPORT {16}
575.~ Adjustable preloading of resilient means {2}
576  DF  .~.~> Plural springs {1}
578  DF  .~.~> Adjusting means coaxial of coil spring

DEFINITION

Classification: 248/575

Adjustable preloading of resilient means:

(under subclass 560) Structure comprising adjustable means for preloading the resilient means by distorting the resilient means independently of the distortion caused by the supported structure.