US PATENT SUBCLASS 137 / 399
.~.~.~ Low level safety cut-off

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

Internet Version by PATENTEC © 1999      Terms of Use


137 /   HD   FLUID HANDLING

386  DF  LIQUID LEVEL RESPONSIVE OR MAINTAINING SYSTEMS {11}
395  DF  .~ Control of outflow from tank {2}
398  DF  .~.~ By float {1}
399.~.~.~ Low level safety cut-off

DEFINITION

Classification: 137/399

(under subclass 398) Apparatus wherein the outflow is closed in response to the presence of a low level in the liquid accumulation.

(1) Note. The float control in patents placed in this subclass is not intended to regulate liquid level but is designed to function as a safety control to prevent an undesired occurrence in the outlet pipe, such as entrance of air or sediment.

SEE OR SEARCH CLASS

222, Dispensing,

66, for dispenser type material level control comprising an empty container cut-off.