US PATENT SUBCLASS 361 / 117
.~ High voltage dissipation (e.g., lightning arrester)

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.~ High voltage dissipation (e.g., lightning arrester) {10}
118  DF  .~.~> Surge prevention (e.g., choke coil) {1}
120  DF  .~.~> Vacuum or gas filled space discharge
121  DF  .~.~> Fluid (e.g., mercury, quenching) {2}
124  DF  .~.~> Thermal (e.g., fusible, bimetallic) {1}
126  DF  .~.~> Current limiting material in discharge path {1}
129  DF  .~.~> Plural gaps with common electrode
130  DF  .~.~> Plural gaps serially connected
131  DF  .~.~> Combined (e.g., with disconnect switch) {1}
133  DF  .~.~> With magnetic means (e.g., electromagnet) {2}
137  DF  .~.~> Horn gap {1}

DEFINITION

Classification: 361/117

High voltage dissipation (e.g., lightning arrester):

(under subclass 1) Subject matter comprising means for reducing the voltage of a surge applied to its terminals without disconnecting the load.

(1) Note. The surge normally being applied by lightning.

(2) Note. This subclass relates, for example, to lightning arresters and surge dissipators, where the line wire or some other structure that relates to the conductor is claimed. When the line wire is not claimed, and only the terminals of the dissipator are claimed the dissipator is classified in one of the classes referred to under search class below.

SEE OR SEARCH CLASS

174, Electricity: Conductors and Insulators,

2+, for lightning protection by means of conductive structure, such as lightning rods; also, consult the search notes to this subclass. Search subclasses 140+ for insulators combined with conductive arcing or stress distributing means.

313, Electric Lamp and Discharge Devices, appropriate subclasses for lightning arresters of the arc or spark gap type, not having line conductor structure. Also consult the search notes in the class definition for related art.

337, Electricity: Electrothermally or Thermally Actuated Switches, 28, for lightning arresters combined with thermal current type circuit breakers.

338, Electrical Resistors,

20+, for electric resistors responsive to current and/or voltage changes.