| 摘要 |
<p>The invention relates to the field of screwing heads for trigger pumps provided with a threaded fixing ring nut (2) mounted to a vessel by a gripping lever assembly (10). A trigger cap (1) is provided with a downwardly extending trigger (5); said trigger (5) interfering with the gripping area of the ring nut (2) used by the gripping lever assembly (10). Each lever (11) of the gripping lever assembly (10) has a shape adapted not to interfere with the trigger (5), and comprises a bottom portion extending upwardly and terminating with a plate or slide (11A) for contact with the ring nut (2) .</p> |
