US PATENT SUBCLASS 29 / 888.41
.~.~.~ Valve guide making

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

Internet Version by PATENTEC © 1999      Terms of Use


29 /   HD   METAL WORKING

592  DF  METHOD OF MECHANICAL MANUFACTURE {54}
888  DF  .~ Prime mover or fluid pump making {12}
888.4  DF  .~.~ Poppet or I.C. engine valve or valve seat making {6}
888.41.~.~.~ Valve guide making

DEFINITION

Classification: 29/888.41

Valve guide making:

(under subclass 888.4) Process wherein the manufactured article is especially adapted for maintenance of alignment of a stem of a poppet valve or I.C. engine valve.