| 摘要 |
<p>Improved valve presenting a threaded end (12), intended to the positioning of the valve core which provides for the opening or closing of the air passage. On the threaded end is mounted a device having means for closing the mouth of the valve and for actuating the core, said device including a main single body (52) or a main body (2) and an external body (3) which may be coupled to each other, a stem (4) and a spring (5); the device defines a mouth (31) which has preferably a truncated shape, as well as various peripheral external ribs (32); the stem has a cylindrical configuration and has at its rear end an axial orifice (41) and is ended at its front part by a head (42) which is preferably truncated so that the valve provides for the supply and discharge of air of a tyre while insuring an air-tight closing due to the action of an O-ring (6) mounted on the push-stem (11) of the valve core. <IMAGE></p> |
