HAVING SPECIFIC COUNTERBALANCE MEANS FOR LOAD SUPPORT:
(under the class definition) Subject matter having a particular structural aspect of means detailed which is structurally linked to and mitigates the effect of either (a) gravitational force on or (b) the driving force exerted by the drive-means* on the load-underlying support surface in at least one direction of its travel within the shaft* by opposing those forces with a resistance tending to balance them.
SEE OR SEARCH THIS CLASS, SUBCLASS:
406+, for specific stationary guiding structure for a counterbalance means.
SEE OR SEARCH CLASS
16, Miscellaneous Hardware,
193+, for counterbalance means for a door or window respectively and subclasses 400+ for a counterbalance device, per se.
104, Railways,
174, for a counterbalance system used in railway traction and subclass 254 for a counterweighted bumper.
