US PATENT SUBCLASS 106 / 759
.~.~.~.~ Flow of gases to produce turbulence (e.g., spiral, helical, Venturi, centrifugal, etc.)

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

Internet Version by PATENTEC © 1999      Terms of Use


106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
638  DF  .~ Inorganic settable ingredient containing {30}
713  DF  .~.~ Portland type cement {13}
739  DF  .~.~.~ Portland type cement per se (e.g., clinker preparation, etc.) {26}
759.~.~.~.~ Flow of gases to produce turbulence (e.g., spiral, helical, Venturi, centrifugal, etc.)

DEFINITION

Classification: 106/759

Flow of gases to produce turbulence (e.g., spiral, helical, venturi, centrifugal, etc.):

(under subclass 739) Subject matter wherein a particular flow of gas designed to produce turbulence is employed, e.g., centrifugal, Venturi, spiral, helical pattern, etc.

(1) Note. Mere flow of air countercurrent to the flow of raw material or fuel is deemed routine in the art and not considered sufficient alone to place in this subclass.