IPC Definitions - January 01, 2012

H05F - Definition fr

Definition statement

This subclass covers:

Methods or arrangements for preventing the formation of electrostatic charges on bodies or for carrying-off these charges after formation.

Use of naturally-occuring electricity, e.g. lightning and static electricity.

Relationship between large subject matter areas

Spark gaps, sparking plugs and corona discharge devices are classified in subclass H01T.

Electrostatic machines are classified in subclass H02N.

References relevant to classification in this subclass

This subclass does not cover:

Installations of lightning conductors; Fastening thereof to supporting structure

H02G 13/00
Specific applications of methods or arrangements for preventing the formation of static electricity or for carrying off these charges after their formation. For example:

Garments protecting against electric shocks or static electricity

A41D 13/008

Footwear with earthing or grounding means

A43B 7/36

Carrying off electrostatic charges from living beings

A61N 1/14

Electric elements specially adapted for carrying off electrostatic charges from vehicles

B60R 16/06

Static discharge and lightning protection for aircraft

B64D 45/02

Arrangements in large containers

B65D 90/46

Structural protection against electrostatic charges or discharges for semiconductor devices

H01L 23/60

Protective earth or shield arrangements on coupling devices

H01R 13/648

Devices providing for corona discharge

H01T 19/00

Screening of printed circuits or components thereof against electric or magnetic fields

H05K 9/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Domestic cleaning implements functioning electrostatically

A47L 13/40

Cleaning by electrostatic means

B08B 6/00

Apparatus for electrographic processes using a charge pattern

G03G 15/00

Electrostatic machines

H02N

Glossary of terms

In this subclass, the following terms or expressions are used with the meaning indicated:

Corona discharge or brush discharge

Discharge from a conductor when the potential difference between it and its surroundings exceeds a certain value but is not enough to cause a spark or an arc.

Spark gaps

Enclosed or non-enclosed discharge devices having cold electrodes and used exclusively to discharge a quantity of electrical energy in small time duration.

Coupling devices

Devices having two or more parts specially adapted so as to be capable of ready and repeated physical engagement or disengagement, without the use of a tool for the purpose or establishing or breaking an electrical path.

Electrostatic charge, Static electricity

They are used as synonyms for the electric charge at rest on the surface of an insulator or insulated body.