| 摘要 |
TWO-ELEMENT WAD WITH PNEUMATIC DAMPING Two-element wad with pneumatic damping designed for the cartridge industry formed by two interchangeable elements connected to each other and which consist of a case (1) and a damper-shutter (8). The case (1) incorporates a series of foldable flaps (7) and a valve (2) that regulates the damping and injects air. Both the case (1) and the damper (8) have cross-sectional walls (3) and (9) of aconvex-concave shape and can absorb radial deformations to the symmetry axis of the wad. The damper (8) has a four-fold action: it supports the flexion and deformation of the material, the friction against the walls and the compression Or the air contained.
|
