US PATENT SUBCLASS 218 / 90
.~.~ Gas-evolving chamber

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

Internet Version by PATENTEC © 1999      Terms of Use


218 /   HD   HIGH-VOLTAGE SWITCHES WITH ARC PREVENTING OR EXTINGUISHING DEVICES

1  DF  ARC PREVENTING OR EXTINGUISHING DEVICES {14}
89  DF  .~ Interposed non-conductor {3}
90.~.~ Gas-evolving chamber

DEFINITION

Classification: 218/90

Gas-evolving chamber:

(under subclass 89) Subject matter including a container composed of material, which under the influence of the arc heat, emits gases or vapors tending to extinguish the arc.