1. CPC Sections
  2. CPC Section H
  3. CPC Class H01
  4. CPC Subclass H01T
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CPC
COOPERATIVE PATENT CLASSIFICATION
​
H01T
SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES (overvoltage protection circuits H02H) [2016-01]
NOTE

  • In this subclass, the term "spark gaps" is used with the following meaning:
    • enclosed or non-enclosed discharge device having cold electrodes and used exclusively to discharge a quantity of electrical energy in a small time duration.
H01T 1/00
Details of spark gaps [2013-01]
H01T 1/02
.
Means for extinguishing arc [2013-01]
H01T 1/04
. .
using magnetic blow-out [2013-01]
H01T 1/06
. . .
with permanent magnet [2013-01]
H01T 1/08
. .
using flow of arc-extinguishing fluid [2013-01]
H01T 1/10
. . .
with extinguishing fluid evolved from solid material by heat of arc [2013-01]
H01T 1/12
.
Means structurally associated with spark gap for recording operation thereof [2013-01]
H01T 1/14
.
Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure (H01T 1/15, H01T 1/16, H01T 1/18 take precedence; emergency protective circuit arrangements for spark gap arrestors H02H 7/24) [2018-02]
H01T 1/15
.
for protection against excessive pressure [2013-01]
H01T 1/16
.
Series resistor structurally associated with spark gap [2013-01]
H01T 1/18
.
Electrolytic device structurally associated with spark gap [2013-01]
H01T 1/20
.
Means for starting arc or facilitating ignition of spark gap [2013-01]
H01T 1/22
. .
by the shape or the composition of the electrodes [2013-01]
H01T 1/24
.
Selection of materials for electrodes (H01T 1/22 takes precedence) [2013-01]
H01T 2/00
Spark gaps comprising auxiliary triggering means (triggering circuits H01T 15/00) [2013-01]
H01T 2/02
.
comprising a trigger electrode or an auxiliary spark gap [2013-01]
H01T 4/00
Overvoltage arresters using spark gaps (H01T 2/00 takes precedence; overvoltage protection circuits using spark gaps H02H 9/06) [2013-01]
H01T 4/02
.
Details [2016-01]
H01T 4/04
.
Housings (H01T 4/06 takes precedence) [2013-01]
H01T 4/06
.
Mounting arrangements for a plurality of overvoltage arresters [2013-01]
H01T 4/08
.
structurally associated with protected apparatus (with switches H01H 9/14; with fuses H01H 85/44) [2013-01]
H01T 4/10
.
having a single gap or a plurality of gaps in parallel [2013-01]
H01T 4/12
. .
hermetically sealed [2013-01]
H01T 4/14
. .
Arcing horns (associated with insulators H01B 17/46) [2013-01]
H01T 4/16
.
having a plurality of gaps arranged in series [2013-01]
H01T 4/18
. .
Arrangements for reducing height of stacked spark gaps [2018-02]
H01T 4/20
. .
Arrangements for improving potential distribution [2013-01]
H01T 7/00
Rotary spark gaps, i.e. devices having one or more rotating electrodes [2013-01]
H01T 9/00
Spark gaps specially adapted for generating oscillations [2013-01]
H01T 11/00
Spark gaps specially adapted as rectifiers [2013-01]
H01T 13/00
Sparking plugs [2013-01]
H01T 13/02
.
Details [2013-01]
H01T 13/04
. .
Means providing electrical connection to sparking plugs [2016-01]
H01T 13/05
. . .
combined with interference suppressing or shielding means [2013-01]
H01T 13/06
. .
Covers forming a part of the plug and protecting it against adverse environment [2013-01]
H01T 13/08
. .
Mounting, fixing or sealing of sparking plugs, e.g. in combustion chamber [2013-01]
H01T 13/10
. . .
by bayonet-type connection [2013-01]
H01T 13/12
. .
Means on sparking plugs for facilitating engagement by tool or by hand [2013-01]
H01T 13/14
. .
Means for self-cleaning [2013-01]
H01T 13/16
. .
Means for dissipating heat [2013-01]
H01T 13/18
. .
Means for heating, e.g. for drying [2013-01]
H01T 13/20
.
characterised by features of the electrodes or insulation [2013-01]
H01T 13/22
. .
having two or more electrodes embedded in insulation (sparking plugs having two or more spark gaps H01T 13/46) [2016-01]
H01T 13/24
. .
having movable electrodes (H01T 13/28 takes precedence) [2013-01]
H01T 13/26
. . .
for adjusting spark gap otherwise than by bending of electrode [2013-01]
H01T 13/28
. .
having spherically shaped electrodes, e.g. ball-shaped [2013-01]
H01T 13/30
. . .
mounted so as to permit free movement [2013-01]
H01T 13/32
. .
characterised by features of the earthed electrode [2013-01]
H01T 13/34
. .
characterised by the mounting of electrodes in insulation, e.g. by embedding [2013-01]
H01T 13/36
. .
characterised by the joint between insulation and body, e.g. using cement [2013-01]
H01T 13/38
. .
Selection of materials for insulation [2016-01]
H01T 13/39
. .
Selection of materials for electrodes [2013-01]
H01T 13/40
.
structurally combined with other devices (combined or associated with fuel injectors F02M 57/06; structurally combined with other parts of internal-combustion engines F02P 13/00) [2013-01]
H01T 13/41
. .
with interference suppressing or shielding means [2013-01]
H01T 13/42
. .
with magnetic spark generators [2013-01]
H01T 13/44
. .
with transformers, e.g. for high-frequency ignition [2013-01]
H01T 13/46
.
having two or more spark gaps [2013-01]
H01T 13/462
. .
{in series connection} [2013-01]
H01T 13/465
. . .
{one spark gap being incorporated in the sparking plug} [2013-01]
H01T 13/467
. .
{in parallel connection} [2013-01]
H01T 13/48
.
having means for rendering sparks visible [2013-01]
H01T 13/50
.
having means for ionisation of gap (H01T 13/52 takes precedence) [2013-01]
H01T 13/52
.
characterised by a discharge along a surface [2013-01]
H01T 13/54
.
having electrodes arranged in a partly-enclosed ignition chamber [2013-01]
H01T 13/56
.
characterised by having component parts which are easily assembled or disassembled [2013-01]
H01T 13/58
.
Testing (testing characteristics of the spark in internal-combustion engine ignition F02P 17/12) [2013-01]
H01T 13/60
. .
of electrical properties [2013-01]
H01T 14/00
Spark gaps not provided for in groups H01T 2/00 - H01T 13/00 (devices providing for corona discharge H01T 19/00) [2016-05]
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 H02H 9/06) [2013-01]
H01T 19/00
Devices providing for corona discharge (for charging electrographic elements G03G 15/02) [2013-01]
H01T 19/02
.
Corona rings [2013-01]
H01T 19/04
.
having pointed electrodes [2013-01]
H01T 21/00
Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs [2013-01]
H01T 21/02
.
of sparking plugs [2013-01]
H01T 21/04
. .
Cleaning (means for self-cleaning H01T 13/14; abrasive blasting devices for cleaning sparking-plugs B24C 3/34) [2018-02]
H01T 21/06
.
Adjustment of spark gaps (sparking-plugs having movable electrodes for adjusting the gap H01T 13/26) [2013-01]
H01T 23/00
Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere [2016-01]