Back to results
US 8,522,851 B2Granted
Machine for fitting and removing tires
AssigneeBertrand Du Quesne
InventorsBertrand du Quesne, Francis du Quesne
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeBertrand Du Quesne
InventorsBertrand du Quesne, Francis du Quesne
Estimating the term…
Machine for fitting and removing a tire (1) from a rim (2) of a wheel (3). The machine comprises a frame (10), a rotating table (11) in order to attach the wheel thereto by its rim and to rotate the rim about its axis (Y), and a tool (12) for fitting and/or removing the tire from the rim. The tool (12) is connected to the frame (10) by means of a movable structure (20) capable of moving the tool (12) horizontally and vertically to its working position situated close to the proximal edge (4) of the rim (2) when the wheel (3) is mounted on the rotating table (11). The movable structure (20) comprises four arms (A, B, C, D) connected together in twos by means of four pivots (p, q, r, s) the axes (X1, X2, X3, X4) of which are parallel with one another. One of the arms (A) is secured to the frame (10) and the tool (12) is connected to one of the other arms (B, C, D). The tool (12) can therefore be moved, horizontally and vertically, exclusively by means of rotary connections between the tool (12) and the frame (10). Moreover, the lever arm between the tool (12) and the movable structure (20) is constant and can be relatively short, irrespective of the diameter of the rim (2).
A machine for fitting and removing a tire (1) from a rim (2) of a wheel (3) comprising a frame (10), a rotating table (11) capable of attaching the rim (2) thereto and of rotating said rim (2) in a centered manner about an axis (Y), and a tool (12) for fitting and removing the tire (1), wherein the machine comprises a movable structure (20) having four arms (A, B, C, D), said arms being connected together two by two by means of four pivots (p, q, r, s) having respectively four pivot axes (X1, X2, X3, X4) parallel with one another, a first arm (A) is connected to a third arm (C) by means of a first pivot (p), the third arm (C) is connected to a second arm (B) by means of a fourth pivot (s), the second arm (B) is connected to a fourth arm (D) by means of a third pivot (r), the fourth arm (D) is connected to the first arm (A) by means of a second pivot (q) and where the first arm (A) is secured to the frame (10), and wherein the tool (12) is connected to one of the second, third, or fourth arms (B,C,D).
The machine as claimed in any one of the preceding claims, wherein the tool (12) is connected to one of the second, third, or fourth arms (B, C, D) in a manner so as to be movable in translation along an axis (Z) of the tool (12).
Dependencies are inferred from the claim text.