Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F42—AMMUNITION; BLASTING
  • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
  • F42C1/00—Impact fuzes, i.e. fuzes actuated only by ammunition impact
  • F42C1/02—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze
  • F42C1/04—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze operating by inertia of members on impact

Definitions

• the subject of the invention is a percussion projectile rocket tending to reduce the risk of explosion of the charge of an unexploded projectile as a result of an impact against the push button of the rocket striker.
• This rocket includes a detonator safety device which comes into action when the shot starts but no longer intervenes when the axial acceleration of the projectile ceases. Consequently, any impact against the firing pin of the striker causes the penetration of the point of the striker into the primary primer and the firing of the detonator, in turn causing the explosion of the charge of the projectile.
• the rocket according to the invention which comprises a device for igniting a detonator and a device Detonator safety system is characterized in that the percussion device consists of at least two independent parts connected to each other by a device for discriminating the impact speed.
• Figure 1 is an axial sectional view of the first embodiment.
• Figure 2 is an axial sectional view of the variant.
• the rocket comprises a head 1 of tubular shape in the bore 2 from which a pusher 3 can slide axially intended to exert pressure on a striker 9 by means of a device for discrimination of impact speed.
• This device for discriminating the impact speed consists of a fluid speed damper comprising a piston 8 integral with the striker 9, intended to slide in a bore 1 1 of the pusher 3.
• a first spring 12 maintains the pusher 3 in the inactive position before impact. Because the piston 8 is supported on the spring 12, it also keeps the striker 9 away from the primary primer 13, This spacing of the striker 9 is limited by a retaining stop 4 and therefore makes it possible to delimit the volume of fluid in bore 11 before impact.
• a second spring 10 engaged on the striker 9 between the stop 4 and the piston 8 exerts pressure on the latter.
• the spring 10 tends to cause the piston 8 to penetrate into the bore 11 and to prevent the ignition of the primary primer 13.
• the second spring 10 tends to maintain the pressure of the piston 8 on the fluid trapped in the bore 11 and forces it to escape.
• the means for escaping the fluid trapped in the bore 11 are however too slow to allow the piston 8 to penetrate to the bottom of the bore 11 during an impact at high speed and to prevent the ignition of the primary primer 13 for firing the detonator 14 of the rocket during a mortar fire for example.
• the piston 8 can penetrate the bottom of the bore 11 of the pusher 3 and prevent the ignition of the primary primer 13.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Air Bags (AREA)
• Catching Or Destruction (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=4184312

Family Applications (1)

Country Status (4)

Citations (2)

• 1984
  • 1984-01-25 CH CH319/84A patent/CH655790A5/fr not_active IP Right Cessation
• 1985
  • 1985-01-21 WO PCT/CH1985/000007 patent/WO1985003344A1/fr unknown
  • 1985-01-23 IT IT8567061A patent/IT8567061A0/it unknown
  • 1985-01-23 IT IT8552886U patent/IT8552886V0/it unknown
  • 1985-01-24 ES ES539817A patent/ES539817A0/es active Granted

Patent Citations (2)

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