US PATENT SUBCLASS 417 / 287
.~.~ Diverse capacity pumps

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

Internet Version by PATENTEC © 1999      Terms of Use


417 /   HD   PUMPS

279  DF  WITH CONDITION RESPONSIVE PUMPED FLUID CONTROL {22}
286  DF  .~ Plural pump units with individual or relative control {2}
287.~.~ Diverse capacity pumps

DEFINITION

Classification: 417/287

(under subclass 286) Apparatus in which the pumping units have different volumetric displacements to provide different rates of flow or different pressure heads.

SEE OR SEARCH THIS CLASS, SUBCLASS:

253, for diverse capacity pumps of the multistage type having condition responsive control of at least one of the stages.