A dampening system for a tire-bead loosener may have a lever in communication with an operation valve, the operation valve configured to channel a supply flow having a supply flow pressure through a first line into a first port of a cylinder and an exhaust flow having an exhaust flow pressure through a second line out of a second port of the cylinder. A pressure line connecting the first line to the second line may include a preset pressure relief valve, a pressure regulator, and a check valve. A bypass flow of the supply flow may move through the pressure line and achieve a damped pressure, thereby channeling through the second line and into the second port of the cylinder. The supply flow pressure in the first port of the cylinder may be cushioned against the exhaust flow pressure and the damped pressure in the second port of the cylinder.

A dampening system for a tire-bead loosener may have a lever in communication with an operation valve, the operation valve configured to channel a supply flow having a supply flow pressure through a first line into a first port of a cylinder and an exhaust flow having an exhaust flow pressure through a second line out of a second port of the cylinder. A pressure line connecting the first line to the second line may include a preset pressure relief valve, a pressure regulator, and a check valve. A bypass flow of the supply flow may move through the pressure line and achieve a damped pressure, thereby channeling through the second line and into the second port of the cylinder. The supply flow pressure in the first port of the cylinder may be cushioned against the exhaust flow pressure and the damped pressure in the second port of the cylinder.

A dampening system for a tire-bead loosener may have a lever in communication with an operation valve, the operation valve configured to channel a supply flow having a supply flow pressure through a first line into a first port of a cylinder and an exhaust flow having an exhaust flow pressure through a second line out of a second port of the cylinder. A pressure line connecting the first line to the second line may include a preset pressure relief valve, a pressure regulator, and a check valve. A bypass flow of the supply flow may move through the pressure line and achieve a damped pressure, thereby channeling through the second line and into the second port of the cylinder. The supply flow pressure in the first port of the cylinder may be cushioned against the exhaust flow pressure and the damped pressure in the second port of the cylinder.

A dampening system for a tire-bead loosener may have a lever in communication with an operation valve, the operation valve configured to channel a supply flow having a supply flow pressure through a first line into a first port of a cylinder and an exhaust flow having an exhaust flow pressure through a second line out of a second port of the cylinder. A pressure line connecting the first line to the second line may include a preset pressure relief valve, a pressure regulator, and a check valve. A bypass flow of the supply flow may move through the pressure line and achieve a damped pressure, thereby channeling through the second line and into the second port of the cylinder. The supply flow pressure in the first port of the cylinder may be cushioned against the exhaust flow pressure and the damped pressure in the second port of the cylinder.

A debeading device for tire changing machines includes a swing arm having a hinging end hinged to a base of a tire changing machine and swinging in a swing plane between an active debeading position toward the base and an inactive position away from the base; a debeading tool supported at a free end of the arm, opposite to the hinging end; an actuator for reciprocatingly rotating the arm between the active and inactive positions, which includes an externally screw-threaded member supported by the base and rotatably actuated by a motor and screwingly/unscrewingly engaged in a matingly threaded hollow member associated with the arm.

A debeading device for tire changing machines includes a swing arm having a hinging end hinged to a base of a tire changing machine and swinging in a swing plane between an active debeading position toward the base and an inactive position away from the base; a debeading tool supported at a free end of the arm, opposite to the hinging end; an actuator for reciprocatingly rotating the arm between the active and inactive positions, which includes an externally screw-threaded member supported by the base and rotatably actuated by a motor and screwingly/unscrewingly engaged in a matingly threaded hollow member associated with the arm.

An article handling apparatus comprising a handling frame comprising a plurality of arm members adapted to grip the article, at least one of the plurality of arm members being of variable length. There is also disclosed means for dismounting a tire from a wheel, the means comprising a housing and a pad, the housing being adapted to be releasably attached to gripping means and the pad adapted to break the bead of the tire to facilitate removal of the tire from the wheel.

An article handling apparatus comprising a handling frame comprising a plurality of arm members adapted to grip the article, at least one of the plurality of arm members being of variable length. There is also disclosed means for dismounting a tire from a wheel, the means comprising a housing and a pad, the housing being adapted to be releasably attached to gripping means and the pad adapted to break the bead of the tire to facilitate removal of the tire from the wheel.

A debeading device for tire changing machines includes a swing arm having a hinging end hinged to a base of a tire changing machine and swinging in a swing plane between an active debeading position toward the base and an inactive position away from the base; a debeading tool supported at a free end of the arm, opposite to the hinging end; an actuator for reciprocatingly rotating the arm between the active and inactive positions, which includes an externally screw-threaded member supported by the base and rotatably actuated by a motor and screwingly/unscrewingly engaged in a matingly threaded hollow member associated with the arm.