Patent ID: 6786267
Filing Date: 2004-09-07
Classification: B60C

Abstract:
A portable tire bead breaker system for breaking the seal between a tire at its bead and an associated rim of a wheel of an all terrain vehicle, tractor, golf cart and the like in a safe and convenient manner thus allowing the tire to be changed and repaired as needed comprising, in combination:an elongated bar with an upper face and a lower face fabricated of a rigid metal with a circular central aperture formed with threads and with a laterally spaced unthreaded oval slot equally spaced on each side of the central aperture and with axes parallel with the axis of the central aperture; a threaded side rod extending through each slot, each side rod having an upper end and a lower end, and with two threaded jam nuts on each side rod, and with one jam nut on each side of the elongated bar; a central rod having an upper end and a lower end and a threaded central extent threadedly received in the central aperture of the elongated bar, the upper end of the threaded rod having a head with a polygon cross section to facilitate turning the central rod within the elongated bar and the axial movement there between, the lower end being formed with an axial slot and a radial hole; a strengthening plate on the upper face of the elongated plate with a threaded aperture receiving the threads of the central rod; a pivoting wing locking plate having a pivot pin rotatably coupling the locking plate to the central rod, the locking plate being positionable through a central hole in a wheel supporting a tire to be removed, the locking plate being in contact with a side of a tire remote from the elongated bar during the breaking of a seal between a tire at its bead and an associated rim of a wheel; and a radius plate secured to the lower end of each side rod, each radius plate having a lower face positionable in contact with a side of a tire adjacent to the elongated bar with a curved edge concentric with an associated rim of a wheel supporting a tire during the breaking of the seal between a tire at its bead and an associated rim of a wheel, the curved edge having a radius of curvature greater than the radius of curvature of a rim of a wheel supporting a tire with a bead to be broken, whereby rotating the head of the central rod will exert a force on the wheel in a first direction toward the elongated bar while exerting a force on the tire in a second direction away from the elongated bar.