| 摘要 |
<p>A firearm lock comprises a substantially cylindrical body of three annular sections (12, 14, 16). First and third sections (12, 14) are of rigid construction and first section (12) is provided with a locking device (18) attached to a connecting bar (20) which passes through all three sections. The connecting bar (20) has a threaded part which engages with a nut (22) fixedly attached to the third section (14). The second section (16) located between the first section (12) and third section (14) is of a flexible and relatively incompressible material such as rubber. The lock is placed in the barrel of a firearm preferably at the breech end and the locking device (18) is operated to rotate the bar (20). The rotation of the bar causes axial displacement of the third section (14) which is prevented from rotating itself by frictional engagement with the barrel walls of the firearm. This displacement compresses the second section (16) causing a radial expansion thereof and a corresponding frictional engagement with the barrel inner wall preventing removal of the lock therefrom.</p> |
