| 摘要 |
<p>A piston head (1) suitable for a spring powered gas operated weapon such as an air rifle or air pistol is disclosed. The piston head (1) is comprised of a piston end and a spring abutment means in which the piston end is comprised of a head (5) and a plunger (3), the spring abutment means is comprised of a body (2) and an extended boss (4). At least the body (2) of the spring abutment means defines a blind bore (20) which extends from the surface of the body (20) remote from the extended boss (4) and towards the extended boss (4) and preferably into the extended boss (4). The plunger (3) and blind bore (20) are dimensioned to allow the plunger (3) to fit within the blind bore (20), and the plunger (3) is provided with at least one means for mounting a seal means (6) around the plunger (3) to allow the creation of a seal between the plunger (3) and the or each wall defining the blind bore (20).</p> |
