Device for disassembling a tire from a wheel rim and a method of disassembling a tired wheel
AssigneeButler Engineering and Marketing S.P.A.
InventorsTullio GONZAGA, Silvano SANTI
Life of this patent
Estimating the term…
Abstract
The present invention relates to a device for dismounting a tired wheel having a wheel rim (W) and a tire (T) mounted on the wheel rim (W), comprising: a support member (2), a bill or lever-shaped dismounting tool (4) having one end (4a) thereof articulated to the support member (2), and the other work end (4b) thereof substantially hook-shaped, and holding means for holding the tool (4) in an engagement and extraction position, the holding means comprising an elastically loaded pin (7).
Claims14
A device for dismounting a tired wheel having a wheel rim and a tire mounted on the wheel rim, comprising:
- a support member,
- a bill or lever-shaped dismounting tool having one end thereof articulated to said support member, and the other work end thereof substantially hook-shaped, whereby said dismounting tool can be angularly displaced between a first insertion position between the tire bead of the tire and edge of the wheel rim and a second engagement and extraction position of the tire bead,
- comprising holding means for holding said tool in an engagement and extraction position having an interception element carried either by said support member or by said disassembling tool and arranged to intercept said tool or said support member, respectively, when said disassembling tool reaches said engagement and extraction position, said holding means comprising an elastically loaded pin.
A method of disassembling a tire bead from its respective wheel rim edge, comprising the following steps in sequence:
- arranging a disassembling bill tool in an insertion position in which a work end thereof is abutting against said tire bead of a tired wheel to be disassembled,
- causing a relative movement between said disassembling tool and said wheel rim in a direction parallel to the axis of rotation of said tired wheel or of said wheel rim, thereby forcing the work end of said tool to enter between the tire and the wheel rim and to go beyond the tire bead,
- causing a relative movement along an orthogonal direction to said axis of rotation between wheel rim and tool, thereby causing an angular movement of said tool between said first insertion position and a second extraction position, where said work end is facing in the direction moving away from the axis of rotation and is forced grasping with said tire bead that is thus radially widened, thereby energizing holding means to lock said tool in position,
- moving backwards said disassembling tool and/or said wheel rim parallel to said axis of rotation, and
- causing said wheel or said tool to rotate, thereby bringing the whole tire bead beyond the edge of the wheel rim.
Dependencies are inferred from the claim text.