Rotary spark gaps, i.e. devices having one or more rotating electrodes
9
/
00
Spark gaps specially adapted for generating oscillations
11
/
00
Spark gaps specially adapted as rectifiers
13
/
00
Sparking-plugs (testing sparking-plugs G 01 M 19/02)
13
/
02
•
Details
13
/
04
•
•
Means providing electrical connection to sparking plug (electric connections in general H 01 R)
13
/
05
•
•
•
combined with interference suppressing or shielding means [4]
13
/
06
•
•
Covers forming a part of the plug and protecting it against adverse environment
13
/
08
•
•
Mounting, fixing, or sealing of sparking plugs, e.g. in combustion chamber
13
/
10
•
•
•
by bayonet-type connection
13
/
12
•
•
Means on sparking plugs for facilitating engagement by tool or by hand
13
/
14
•
•
Means for self-cleaning
13
/
16
•
•
Means for dissipating heat
13
/
18
•
•
Means for heating, e.g. for drying
13
/
20
•
characterised by features of the electrodes or insulation
13
/
22
•
•
having two or more electrodes embedded in insulation (for two or more sparks H 01 T 13/46)
13
/
24
•
•
having movable electrodes (H 01 T 13/28 takes precedence)
13
/
26
•
•
•
for adjusting spark gap otherwise than by bending of electrode
13
/
28
•
•
having spherically shaped electrodes, e.g. ball-shaped
13
/
30
•
•
•
mounted so as to permit free movement
13
/
32
•
•
characterised by features of the earthed electrode
13
/
34
•
•
characterised by the mounting of electrodes in insulation, e.g. by embedding
13
/
36
•
•
characterised by the joint between insulation and body, e.g. using cement
13
/
38
•
•
Selection of materials for insulation (in general
H 01 B 3/00)
13
/
39
•
•
Selection of materials for electrodes [4]
13
/
40
•
structurally combined with other devices (combined or associated with fuel injectors F 02 M 57/06; structurally combined with other parts of internal-combustion engines
F 02 P 13/00)
13
/
41
•
•
with interference suppressing or shielding means [4]
13
/
42
•
•
with magnetic spark generators
13
/
44
•
•
with transformers, e.g. for high-frequency ignition
13
/
46
•
having two or more spark gaps
13
/
48
•
having means for rendering sparks visible
13
/
50
•
having means for ionisation of gap (H 01 T 13/52 takes precedence) [4]
13
/
52
•
characterised by a discharge along a surface
13
/
54
•
having electrodes arranged in a partly-enclosed ignition chamber
13
/
56
•
characterised by having component parts which are easily assembled or disassembled
Circuits specially adapted for spark gaps, e.g. ignition circuits (ignition circuits for internal-combustion engines F 02 P; electric spark ignition for combustion apparatus F 23 Q; protection circuits using spark gaps H 02 H 9/06) [4]
19
/
00
Devices providing for corona discharge (for charging electrographic elements G 03 G 15/02) [4]
19
/
02
•
Corona rings
19
/
04
•
having pointed electrodes
21
/
00
Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
21
/
02
•
of sparking plugs
21
/
04
•
•
Cleaning (abrasive blasting devices for cleaning sparking-plugs B 24 C 3/34)
21
/
06
•
Adjustment of spark gaps (sparking-plugs having movable electrodes for adjusting the gap H 01 T 13/26) [4]
23
/
00
Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere (discharge tubes with provision for emergence of ions from the vessel H 01 J 33/00; generating plasma H 05 H) [4]
