US PATENT SUBCLASS 384 / 233
.~.~.~.~.~.~ Helical coil spring

Current as of: June, 1999
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384 /   HD   BEARINGS

91  DF  ROTARY BEARING {8}
129  DF  .~ Plain bearing {17}
226  DF  .~.~ For vertical shaft {3}
227  DF  .~.~.~ Spinning spindle {4}
228  DF  .~.~.~.~ With thrust and radial bearing {4}
230  DF  .~.~.~.~.~ Laterally resilient {5}
233.~.~.~.~.~.~ Helical coil spring

DEFINITION

Classification: 384/233

Helical coil spring:

(under subclass 230) Subject matter wherein the means yieldingly maintaining the spindle in a vertical position is a spring where several convolutions of a coil lie in different planes.