CROSSBOW Russian patent published in 2017 - IPC F41B5/12 

FIELD: weaponry and ammunition supplies.

SUBSTANCE: crossbow comprises two shoulders, two eccentric stations, a guide base, a bow-string, a retainer bracket, a stock, a rear-sight leaf, a rear sight, a spring, an arrow presence-sensing device, a trigger, a notch device sear, a safety lock. There are also a ball-type screw-gear shaft and a ball-type lead nut. There are speed- and motion-sensing device on the ball-type lead nut. A gear set transfers rotatory movement from the reversing motor to the shaft. The actuating unit with the embedded applications is conductively-coupled to the electric supply source with the electric motor drive, to the arrow presence-sensing device, to the notch device sear, to the safety lock and to the steady arm for the bow-string.

EFFECT: reduction of the crossbow cock time, crossbow shoulders life cycle increase.

2 dwg