US PATENT SUBCLASS 212 / 196
.~ Counterweight movable relative to load support

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

Internet Version by PATENTEC © 1999      Terms of Use


212 /   HD   TRAVERSING HOISTS

195  DF  HAVING COUNTERWEIGHT OR COUNTERBALANCING MEANS {1}
196.~ Counterweight movable relative to load support {1}
197  DF  .~.~> Along rectilinear path {1}

DEFINITION

Classification: 212/196

Counterweight movable relative to load support:

(under subclass 195) Apparatus wherein the mass is mounted for movement with respect to the load support (e.g., boom*) to compensate for varying tilting effects of the load on the apparatus.

(1) Note. Pivotal movement of a boom with respect to a base carrying a stationary counterweight will not in itself cause classification in this subclass. The counterweight itself must be moved relative to its supporting structure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

279, for apparatus having means to move a counterweight in response to a sensed condition.