| 摘要 |
<p>A single-stroke percussion device comprises a hollow cylindrical casing (1) in which is mounted a reciprocally movable striker (2) dividing the casing (1) into a front and rear chamber (3 and 4). The front chamber (3) is provided with inlet and outlet openings (5 and 6) and the rear chamber is provided with inlet and outlet openings (7 and 8). An air distributing sleeve (10) is mounted outside the casing (1) and is designed so as to open and to close the inlet and outlet openings (5, 6, 7, 8). The air distributing sleeve (10) has front and rear internal longitudinal channels (11 and 12) and a front and rear radial opening (13 and 14).</p> |
