US PATENT SUBCLASS 74 / 424.5
.~.~ Spiral


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



74 /   HD   MACHINE ELEMENT OR MECHANISM

640  DF  GEARING {31}
412 R  DF  .~ Directly cooperating gears {8}
424.5.~.~ Spiral {4}
424.6  DF  .~.~.~> Driven rack or shaft
424.7  DF  .~.~.~> Screw
424.8 R  DF  .~.~.~> Screw and nut {6}
425  DF  .~.~.~> Worm {3}


DEFINITION

Classification: 74/424.5

(under subclass 412) Gearings of the spiral type.