F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
 F01 - 
F04
Subsection index
MACHINES
positive displacement
rotary or oscillating piston
liquid and elastic fluid or elastic fluidF01C
liquid onlyF04C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF04B
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
ENGINES
positive displacement
rotary or oscillating piston
liquid and elastic fluid or elastic fluidF01C
liquid onlyF03C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF03C
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
PUMPS
positive displacement
rotary or oscillating pistonF04C
reciprocating piston or otherF04B
non-positive displacementF04D
  
WEAPONS; BLASTING
 F42
AMMUNITION; BLASTING
 F42

Note(s)

  1. This class covers also means for practice or training which may have aspects of simulation, although simulators are generally covered by class G09.
  2. In this class, the following terms or expressions are used with the meanings indicated:
    • "primer" effects the first explosive step in the sequence of explosion;  [2]
    • "percussion cap" means a primer which is struck to explode;  [2]
    • "igniter" effects the first spark-producing or heat-producing step but may not be explosive;  [2]
    • "firing-means" or "initiator" (used respectively in the arts of weaponry and blasting) means a device acting directly on the primer, which device may or may not form part of the fuze;  [2]
    • "detonator" or "detonator charge" means a charge used to amplify the explosion of the primer;  [2]
    • "fuze" means an assembly or mechanism which incorporates safety and arming means in order that the explosion can only take place under certain conditions; this assembly or mechanism determines also the moment (instantaneous or delayed) or the manner, e.g. impact, proximity, hydrostatic pressure, of the firing;  [2]
    • "ammunition" covers propulsive charge and projectile whether or not forming a single body, unless otherwise made clear;  [2]
    • "projectile", "missile" or "projectile or missile" means any body which is projected or propelled;  [4]
    • "guided missile" means projectile or missile which is guided during at least part of its trajectory;  [4]
    • "rocket" means projectile or missile which is self-propelled, during at least part of its trajectory, by a rocket engine, i.e. by a jet-propulsion engine carrying both fuel and oxidant therefor;  [4]
    • "fuse" or "fuse cord" means a continuous train of explosive enclosed in a usually flexible cord or cable for setting-off an explosive charge in the art of blasting.  [5]
 F42C
AMMUNITION FUZES (blasting cartridge initiators F42B 3/10; chemical aspects C06C); ARMING OR SAFETY MEANS THEREFOR (filling fuzes F42B 33/02; fitting or extracting primers in or from fuzes F42B 33/04; containers for fuzes F42B 39/30)  [5]
 F42C
Subclass index
FUZE-OPERATING PRINCIPLES
Impact 1/00
Liquid contact 3/00
Fluid pressure 5/00
Mechanical force 7/00
Non-electric time fuzes 9/00
Electric fuzes 11/00
Proximity fuzes 13/00
Combination fuzes 9/00
FUZES CHARACTERISED BY THE TYPE OF AMMUNITION 14/00
ARMING OR SAFETY MEANS 15/00
FUZE-SETTING 17/00
OTHER DETAILS 19/00
CHECKING, TESTING 21/00
SUBJECT MATTER NOT PROVIDED FOR IN OTHER GROUPS OF THIS SUBCLASS 99/00
P:30 F42C 1/00
Impact fuzes, i.e. fuzes actuated only by ammunition impact
 F42C 1/02
·  with firing pin structurally combined with fuze
 F42C 1/04
·  ·  operating by inertia of members on impact
 F42C 1/06
·  ·  ·  for any direction of impact
 F42C 1/08
·  ·  with delayed action after ignition of fuze (time fuzes F42C 9/00)
 F42C 1/09
·  ·  the fuze activating a propulsive charge for propelling the ammunition or the warhead into the air, e.g. in rebounding projectiles  [5]
 F42C 1/10
·  without firing pin
 F42C 1/12
·  ·  with delayed action after ignition of fuze (time fuzes F42C 9/00)
 F42C 1/14
·  operating at a predetermined distance from ground or target by means of a protruding member
P:50 F42C 3/00
Fuzes actuated by exposure to a liquid, e.g. sea-water (F42C 5/00 takes precedence; time fuzes F42C 9/00)
P:40 F42C 5/00
Fuzes actuated by exposure to a predetermined ambient fluid pressure
 F42C 5/02
·  barometric pressure
P:60 F42C 7/00
Fuzes actuated by application of a predetermined mechanical force, e.g. tension, torsion, pressure (by ammunition impact F42C 1/00; by exposure to a predetermined ambient fluid pressure F42C 5/00)
 F42C 7/02
·  Contact fuzes, i.e. fuzes actuated by mechanical contact between a stationary ammunition, e.g. a land mine, and a moving target, e.g. a person (F42C 7/12 takes precedence)
 F42C 7/04
·  ·  actuated by applying pressure on the ammunition head  [5]
 F42C 7/06
·  ·  ·  and comprising pneumatic or hydraulic retarding means  [5]
 F42C 7/08
·  ·  of release type, i.e. actuated by releasing pressure from the ammunition head  [5]
 F42C 7/10
·  ·  of antenna type  [5]
 F42C 7/12
·  Percussion fuzes of the double-action type, i.e. fuzes cocked and fired in a single movement, e.g. by pulling an incorporated percussion pin or hammer (percussion caps F42C 19/10)  [5]
P:0 F42C 9/00
Time fuzes; Combined time- and percussion- or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
 F42C 9/02
·  the timing being caused by mechanical means
 F42C 9/04
·  ·  by spring motor
 F42C 9/06
·  ·  by flow of fluent material, e.g. shot, fluids
 F42C 9/08
·  the timing being caused by chemical action, e.g. of acids
 F42C 9/10
·  the timing being caused by combustion
 F42C 9/12
·  ·  with ring combustion elements
 F42C 9/14
·  Double fuzes; Multiple fuzes
 F42C 9/16
·  ·  for self-destruction of ammunition
 F42C 9/18
·  ·  ·  when the spin rate falls below a predetermined limit, e.g. a spring force being stronger than the locking action of a centrifugally-operated lock  [5]
P:20 F42C 11/00
Electric fuzes (proximity fuzes F42C 13/00; electric igniters F42C 19/12)
 F42C 11/02
·  with piezo-crystal
 F42C 11/04
·  with current induction
 F42C 11/06
·  with time delay by electric circuitry
P:10 F42C 13/00
Proximity fuzes; Fuzes for remote detonation
 F42C 13/02
·  operated by intensity of light or similar radiation
 F42C 13/04
·  operated by radio waves
 F42C 13/06
·  operated by sound waves
 F42C 13/08
·  operated by variations in magnetic field
P:70 F42C 14/00
Fuzes characterised by the ammunition class or type (F42C 1/00, F42C 13/00, F42C 15/00 take precedence)  [5]
 F42C 14/02
·  for hand grenades  [5]
 F42C 14/04
·  for torpedoes, marine mines or depth charges (influenced marine mines F42B 22/04)  [5]
 F42C 14/06
·  for fall bombs  [5]
 F42C 14/08
·  for land mines  [5]
P:90 F42C 15/00
Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
 F42C 15/16
·  wherein the firing pin is displaced out of the action line for safety (F42C 15/40 takes precedence)
 F42C 15/18
·  wherein a carrier for an element of the pyrotechnic or explosive train is moved (F42C 15/40 takes precedence)  [5]
 F42C 15/184
·  ·  using a slidable carrier  [5]
 F42C 15/188
·  ·  using a rotatable carrier  [5]
 F42C 15/192
·  ·  ·  rotatable in a plane which is parallel to the longitudinal axis of the projectile  [5]
 F42C 15/196
·  ·  ·  ·  by the action of centrifugal or inertia forces on the carrier body, e.g. the carrier having eccentrically mounted weights or eccentric centre of gravity  [5]
 F42C 15/20
·  wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing pin (F42C 15/40 takes precedence)
 F42C 15/21
·  ·  using spring action (F42C 15/23 takes precedence)  [5]
 F42C 15/22
·  ·  using centrifugal force (F42C 15/23 takes precedence)
 F42C 15/23
·  ·  by unwinding a flexible ribbon or tape  [5]
 F42C 15/24
·  wherein the safety or arming action is effected by inertia means (F42C 15/196, F42C 15/20 take precedence)
 F42C 15/26
·  ·  using centrifugal force
 F42C 15/28
·  operated by flow of fluent material, e.g. shot, fluids (F42C 15/26 takes precedence)
 F42C 15/285
·  ·  stored within the fuze housing  [5]
 F42C 15/29
·  ·  operated by fluidic oscillators; operated by dynamic fluid pressure, e.g. ram-air operated  [5]
 F42C 15/295
·  ·  operated by a turbine or a propeller; Mounting means therefor  [5]
 F42C 15/30
·  ·  of propellant gases, i.e. derived from propulsive charge or rocket motor
 F42C 15/31
·  ·  generated by the combustion of a pyrotechnic or explosive charge within the fuze  [5]
 F42C 15/32
·  operated by change of fluid pressure (F42C 5/00, F42C 15/29 take precedence)
 F42C 15/33
·  ·  by breaking a vacuum or pressure container  [5]
 F42C 15/34
·  wherein the safety or arming action is effected by a blocking-member in the pyrotechnic or explosive train between primer and main charge (F42C 15/18, F42C 15/40 take precedence)
 F42C 15/36
·  wherein arming is effected by combustion or fusion of an element (F42C 15/31 takes precedence)
 F42C 15/38
·  wherein arming is effected by chemical action (F42C 3/00 takes precedence)
 F42C 15/40
·  wherein the safety or arming action is effected electrically
 F42C 15/42
·  ·  from a remote location, e.g. for controlled mines or mine fields  [5]
 F42C 15/44
·  Arrangements for disarming, or for rendering harmless, fuzes after arming, e.g. after launch  [5]
P:100 F42C 17/00
Fuze-setting apparatus
 F42C 17/02
·  Fuze-setting keys
 F42C 17/04
·  for electric fuzes  [5]
P:110 F42C 19/00
Details of fuzes (other parts F42C 15/00)
 F42C 19/02
·  Fuze bodies; Fuze housings
 F42C 19/04
·  Protective caps
 F42C 19/06
·  Electric contact parts specially adapted for use with electric fuzes
 F42C 19/07
·  ·  Nose-contacts for projectiles or missiles  [5]
 F42C 19/08
·  Primers (initiators for blasting cartridges F42B 3/10); Detonators
 F42C 19/085
·  ·  Primers for caseless ammunition  [5]
 F42C 19/09
·  ·  Primers or detonators containing a hollow charge  [5]
 F42C 19/095
·  ·  Arrangement of a multiplicity of primers or detonators, dispersed around a warhead, one of the primers or detonators being selected for directional detonation effects  [5]
 F42C 19/10
·  ·  Percussion caps
 F42C 19/12
·  ·  electric
 F42C 19/14
·  ·  ·  operable also in the percussion mode  [5]
P:80 F42C 21/00
Checking fuzes; Testing fuzes
P:120 F42C 99/00
Subject matter not provided for in other groups of this subclass  [8]