| 摘要 |
The invention discloses a new and inventive adjustable wrench or spanner. It comprises essentially an elongated handle element (1) with a convex urging portion (11) at one end, an upper jaw element (2) with a concave urging portion (21), a lower jaw element (4) with a protrusion portion (44) and a ratchet assembly (3). The upper jaw element (2) is movable with the assistan ce of the two engaging urging portions (11, 21) and the lower jaw element (4) i s adjustable with the assistance of the ratchet assembly (3). Two jaw portions (22, 41) are operable in tightening or loosening positions, without having t o b disengaged from a hexagonal nut. When the jaw portions (22, 41) are opened in a loosening position, gripping edges (23, 42) of the jaw portions (22, 41 ) are allowed to shift from one width across flats (fl) to another width acros s flats (f2).
|
