Abstract: A tire balancing and changing device (10) has a pair of support surfaces (12, 14) and rotatable drums (42, 44) for contacting a vehicle's tires and wheels (50, 52) to balance and/or change the tires and wheels while on the vehicle (17). The device includes pairs of dowels (32, 34) for mounting and dismounting tires. The drums and pairs of dowels are operated by drive motors (31, 46, 48) that translate the dowels and rotate the tires and wheels. The drums include sensors (49) for balancing tires and wheels. With a vehicle positioned on the support surfaces and the weight of the vehicle removed from the tires by jacks (58, 60), the tires on the vehicle are deflated, removed, replaced and reinflated. The drums are moved into contact with the inflated tires to rotate the tires and wheels to balance them on the vehicle.

Abstract: Apparatus and methods for dismounting and mounting tires onto vehicle wheels without removing the tires and wheels from the vehicle. The apparatus (26) includes three carriages (20, 22, 24), two of which have rotating drums (32, 34) for rotating a tire. One of the carriages (24) has a pair of tire bead breaking dowels (76, 77) mounted on the carriage and operated by a power source. Tire cutting knives (84) are held in the dowels for selectively cutting up a tire (98) mounted on a wheel (100). The tire bead breaking dowels are operated to remove an old tire while the drum (34) on a rotational carriage (24) rotates the tire. The third carriage (20) includes a jack stand base (21) and a jack stand (74) to hold a vehicle in an elevated position after the drums in two of the carriages raise the tire, and wheel to either remove or mount a tire on the wheel. The apparatus is movable by means of wheels (48, 50, 52, 54) held thereon.

Abstract: An apparatus for and methods of dismounting and mounting tires onto vehicle wheels without removing the wheels from the vehicle. The apparatus includes driving elements for rotating a tire contacting the same, held in a body and operated by a power source. A pair of tire bead breakers may also be mounted in the body and operated by a power source. Tire cutting knives may be secured in the body for selectively cutting up a tire mounted on a wheel of a vehicle. A tire bead deflector is mounted on a flange of a wheel from which an old tire is to be removed after its beads have been broken, or to which a new tire is to be mounted, and the old tire to be removed or the new tire to be mounted is lowered into contact with the driving elements in the apparatus to enable the driving elements to rotate the old or new tire to either remove the old tire from or mount the new tire on the wheel. The apparatus may be made mobile by adding wheels thereto.