CAP PRIMER Russian patent published in 2016 - IPC F42C19/10 C06C7/00 

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to means of ignition, mainly for ignition of propellant charges of grenade launcher rounds, as well as for ejection cartridges of emergency rescue. Cap primer comprises a cylindrical shell and an anvil located in it and resting on a smaller cap. Latter represents a cap with an impact-ignition charge. Anvil has an extending in both directions relative to the cone-shaped anvil vertical cylindrical wall to make two chambers. Chambers are interconnected with one or more ignition holes. In the lower chamber formed by the anvil and the shell bottom there is the smaller cap. In the upper chamber formed by the anvil and rolled up edges of the shell inside the ignition holes there is a reinforcing incendiary charge. Between the reinforcing incendiary charge and the rolled up edges of the shell a prechamber is formed. Ratio of the volume occupied by the reinforcing incendiary charge to the total volume of the upper chamber of the anvil makes 0.3-0.9. Provided is the possibility to vary the cap output pulse power without changing its overall dimensions, sensitivity to impact power. Prevented is overhang or displacement of structural elements.

EFFECT: provided is reliable ignition, stability during storage and safe handling and transportation.

6 cl, 2 dwg, 1 tbl