US PATENT SUBCLASS 172 / 646
.~.~ Laterally adjustable tools, independently free to move vertically


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

Internet Version by PATENTEC © 1999      Terms of Use



172 /   HD   EARTH WORKING

613  DF  PLURAL RELATIVELY MOVABLE TOOLS {14}
645  DF  .~ Tools relatively adjustable horizontally without causing vertical displacement {7}
646.~.~ Laterally adjustable tools, independently free to move vertically


DEFINITION

Classification: 172/646

(under subclass 645) Apparatus in which the earth working elements are adjustable in a lateral direction and each earth working element is capable of free vertical movement independently of the other.

(1) Note. For the meaning of "adjustable" see the class definition.

(2) Note. Movement against a spring- biasing means is considered to be free movement under this definition. However, selective adjustment from one fixed position to another is not considered to be free movement.