US PATENT SUBCLASS 408 / 58
.~.~ And means to move gaseous fluid by application of vacuum

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

Internet Version by PATENTEC © 1999      Terms of Use


408 /   HD   CUTTING BY USE OF ROTATING AXIALLY MOVING TOOL

56  DF  WITH MEANS TO APPLY TRANSIENT, FLUENT MEDIUM TO WORK OR PRODUCT {2}
57  DF  .~ Including tool with duct {3}
58.~.~ And means to move gaseous fluid by application of vacuum

DEFINITION

Classification: 408/58

(under subclass 57) Device wherein the means for causing a substance to flow serves to create, at an area, a pressure that is lower than the ambient pressure, so that any surrounding gas is moved toward that area by the ambient pressure.