US PATENT SUBCLASS 361 / 127
.~.~.~ Nonlinear material (e.g., valve type)

Current as of: June, 1999
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361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

1  DF  SAFETY AND PROTECTION OF SYSTEMS AND DEVICES {32}
117  DF  .~ High voltage dissipation (e.g., lightning arrester) {10}
126  DF  .~.~ Current limiting material in discharge path {1}
127.~.~.~ Nonlinear material (e.g., valve type) {1}
128  DF  .~.~.~.~> With plural gaps in discharge path

DEFINITION

Classification: 361/127

Nonlinear material (e.g., valve type):

(under subclass 126) Subject matter in which the current limiting material is a conductive nonlinear material.

(1) Note. The material utilized is usually of a negative coefficient type, which allow the initial surge to easily pass to ground and effectively blocks the follow current.