Patent ID: 8464641

Claim:
A forty millimeter caliber exercise bullet is comprised of: a cartridge assembly ( 100 ) forming a cylindrical shape with hollow inside for containing a percussion primer ( 110 ) and primer housing ( 120 ) at a central lower portion, a skirt ( 200 ) forming the cylindrical shape with thread on inner surface of the lower central portion, outer surface forming a rounded bottom for fixedly inserting into the cartridge assembly ( 100 ), a striking pin ( 10 ) forming a circumferential groove ( 11 ) on its outer surface of the lower portion, a safety device assembly ( 300 ) consisting of a disk-shaped detent cover ( 310 ) forming a central seat groove ( 311 ) to rest said striking pin ( 10 ), a pair of sliding grooves ( 312 ) connecting to the central seat groove ( 311 ), wherein said sliding grooves ( 312 ) are arranged 180° angle in radial direction, a detent ( 320 ) for retaining said striking pin ( 10 ) by exerting force of springs ( 323 ) to engage or disengage to the circumferential groove ( 11 ), said detent ( 320 ) integrally forming a retainer ( 321 ) at one end and a mounting rod ( 322 ) at other end for retaining the striking pin ( 10 ) by engaging or disengaging into the circumferential groove ( 11 ), said retainer ( 321 ) forming either one shape of rectangular or cylindrical, a detonator cap ( 330 ) forming a hollow pocket ( 331 ) at its central upper portion to insert a detonator trigger ( 20 ), a washer ( 30 ) sequentially inserted from the top, a press-spring ( 332 ) installed for pressing a guiding cap ( 340 ) being encompassed said striking pin ( 10 ), and the detonator cap ( 330 ) being bolted to the detent cover ( 310 ), so that the retainers ( 321 ) are sliding outwardly by a centrifugal force to disengage the circumferential groove ( 11 ) of the striking pin ( 10 ) to impact the detonator trigger ( 20 ), an explosion pipe ( 400 ) filled with an explosive agent being threaded to the lower central portion of the skirt ( 200 ) for fixedly mounting the detonator cap ( 330 ) and the detent cover ( 310 ), a smoke shell ( 500 ) filled with a smokescreen generating agent, the lower portion of the smoke shell ( 500 ) is inserted between the upper inside of the skirt ( 200 ) and the outer side of the explosion pipe ( 400 ), and an ogive ( 600 ) for surrounding the smoke shell ( 500 ), the lower portion of the ogive ( 600 ) being fixedly inserted into the upper portion of the outer skirt ( 200 ).