SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES (overvoltage protection circuits H02H)

Introduced: September 1968

Description

H01T encompasses electrical devices that generate controlled or protective electrical discharges in gases, including spark gaps for switching and overvoltage protection, ignition spark plugs for internal combustion engines, and corona discharge devices for ionization. This classification covers the design, construction, and operational principles of discharge electrodes, gap geometries, insulating materials, and triggering mechanisms used in these applications. It excludes gas discharge tubes with enclosed electrodes (covered by H01J) and arc discharge devices intended primarily for welding or cutting (covered by B23K). Typical technologies include automotive ignition systems, electrical surge protection devices, and industrial ionization equipment.

Title

Titles differ between systems:

IPC: SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES

CPC: SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES (overvoltage protection circuits H02H)

Full Title

Full titles differ between systems:

IPC:

SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES

CPC:

SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES (overvoltage protection circuits H02H)

IPC and CPC are identically structured here. All 12 subcodes exist in both systems.

5 shared codes have differing titles between IPC and CPC.

Child Classifications

Navigate with arrow keys, Enter to open

H01T 1/00 Details of spark gaps IPC+CPC Available in IPC and CPC
H01T 11/00 Spark gaps specially adapted as rectifiers IPC+CPC Available in IPC and CPC
H01T 13/00 Sparking plugs IPC+CPC Available in IPC and CPC
H01T 14/00 Spark gaps not provided for in groups H01T2/00 - H01T13/00 (devices providing for corona discharge H01T19/00) since 1985 IPC+CPC Available in IPC and CPC
H01T 15/00 Circuits specially adapted for spark gaps, e.g. ignition circuits (ignition circuits for internal-combustion engines F02P; electric spark ignition for combustion apparatus F23Q; protection circuits using spark gaps H02H9/06) IPC+CPC Available in IPC and CPC
H01T 19/00 Devices providing for corona discharge (for charging electrographic elements G03G15/02) IPC+CPC Available in IPC and CPC
H01T 2/00 Spark gaps comprising auxiliary triggering means (triggering circuits H01T15/00) since 1985 IPC+CPC Available in IPC and CPC
H01T 21/00 Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs IPC+CPC Available in IPC and CPC
H01T 23/00 Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere since 1985 IPC+CPC Available in IPC and CPC
H01T 4/00 Overvoltage arresters using spark gaps (H01T2/00 takes precedence; overvoltage protection circuits using spark gaps H02H9/06) since 1985 IPC+CPC Available in IPC and CPC
H01T 7/00 Rotary spark gaps, i.e. devices having one or more rotating electrodes IPC+CPC Available in IPC and CPC
H01T 9/00 Spark gaps specially adapted for generating oscillations IPC+CPC Available in IPC and CPC