| 摘要 |
A tyre bead breaker (10) for use in removing a tyre bead (30) from engagement with a rim (22) of a wheel hub (24), the tyre bead breaker (10) comprising: a) a sleeve (12) having a tine (32) depending, the tine (32) tapering in a direction away from the sleeve (12), the tine (32) being dimensioned to be forceable between a wall (26) of the tyre (28) adjacent the tyre (28) and the rim (22) of the wheel hub (24), the tine (32) being disposed substantially orthogonal to an axis of the sleeve (12); b) a post (14) dimensioned to fit in the sleeve (12) and capable of longitudinal movement therein; c) two or more tongues (18) depending from the post (14) in spaced apart manner, the tongues (18) being disposed substantially orthogonal to an axis of the post (14), the tongues (18) defining a recess into which the tine (22) is capable of fitting, the tongues (18) being disposable between the wall (26) of the tyre (28) adjacent the tyre bead (30) and the rim (22) of the wheel hub (24); d) a clamp means (46) attached to the sleeve (12), the clamp means (46) having an over-centre locking lever (68) to releasably lock the tine (32) onto the rim (22) of the wheel hub (24); and e) a drive means (74) disposed between the sleeve (12) and the post (14) to urge the two tongues (18) away from the tine (32) so as to force the tyre bead (30) off the rim (22). |
