| 摘要 |
<p>An adjustable spanner comprising: first and second jaw members (2, 3) defining respectively first and second substantially parallel jaw faces (4, 5), the jaw members being slidable relative to each other to adjust the distance between the jaw faces, a first wedge face (8) defined on the first jaw member; a second wedge face (9) defined on the second jaw member; a locking member (10) having wedge faces (11, 12) complementary to the wedge faces of the jaw members, the locking member being slidable relative to the jaw members to bring the wedge faces of the locking member into engagement with the wedge faces of the jaw members to prevent by wedging action the separation of the jaw faces; and resilient means to bias said jaw faces towards one another and acting between said locking member and one of said first and second jaw members also to bias said locking member into locking engagement.</p> |
