초록 ▼

A tire-patching tool for patching a tire includes a shell, a barrel, a patch feeder, an elastic element, a hammer and an automatic valve. The barrel is connected with the shell. The patch feeder includes a first end inserted in the barrel and a second end for feeding a patch into a cut in the tire.

A tire-patching tool for patching a tire includes a shell, a barrel, a patch feeder, an elastic element, a hammer and an automatic valve. The barrel is connected with the shell. The patch feeder includes a first end inserted in the barrel and a second end for feeding a patch into a cut in the tire. The elastic element connects the patch feeder with the barrel. The hammer strikes the first end of the patch feeder in the barrel. The automatic valve is installed in the shell for controlling pressurized air for driving the hammer.

대표청구항 ▼

What is claimed is: 1. A pneumatic tire-patching tool comprising a body, a barrel connected with the body, a patch feeder including a first end inserted in the barrel and a second end for feeding a patch into a cut in a tire, an elastic element for connecting the patch feeder with the barrel, a ham

What is claimed is: 1. A pneumatic tire-patching tool comprising a body, a barrel connected with the body, a patch feeder including a first end inserted in the barrel and a second end for feeding a patch into a cut in a tire, an elastic element for connecting the patch feeder with the barrel, a hammer for striking the first end of the patch feeder in the barrel, and an automatic valve installed in the body for controlling pressurized air for driving the hammer, wherein the automatic valve can automatically switch between an open position and a closed position, wherein the automatic valve allows the pressurized air to flow to the barrel from the body in order to drive the hammer to the patch feeder in the open position, wherein the automatic valve blocks the pressurized air from the barrel in order to allow the hammer to return from the patch feeder in the closed position. 2. The pneumatic tire-patching tool according to claim 1 wherein the body includes a handle and a cylinder formed on and communicated with the handle. 3. The pneumatic tire-patching tool according to claim 2 wherein the handle is connected with an air compressor in use. 4. The pneumatic tire-patching tool according to claim 3 comprising a manual valve installed in the handle for controlling the pressurized air flowing to the cylinder from the handle. 5. The pneumatic tire-patching tool according to claim 4 comprising a trigger installed on the handle and connected with the valve. 6. The pneumatic tire-patching tool according to claim 1 wherein the barrel comprises a first passage in which the pressurized air drives the hammer in the open position of the automatic valve and a second passage communicated with the first passage so that the hammer drives feedback air to the body from the first passage through the second passage in order to move the automatic valve to the closed position of the automatic valve. 7. The pneumatic tire-patching tool according to claim 1 wherein the patch feeder comprises a clip formed at an end for clipping the patch. 8. The pneumatic tire-patching tool according to claim 6 comprising a tubular cushion fit in the first passage, wherein the patch feeder comprises an annular shoulder formed thereon for abutment against the tubular cushion. 9. The pneumatic tire-patching tool according to claim 1 wherein the elastic element is a helical spring comprising a first end connected with the barrel and a second end connected with the patch feeder. 10. The pneumatic tire-patching tool according to claim 6 wherein the automatic valve comprises a first shell, a second shell connected with the first shell and a membrane movable between the first shell and the second shell. 11. The pneumatic tire-patching tool according to claim 10 wherein the first shell comprises an external side, an internal side, a first axial passage, a second axial passage communicated with the first axial passage, at least one side passage leading to the internal side from the external side and a feedback passage leading to the internal side from the external side, wherein the second shell comprises an external side, an internal side connected with the internal side of the first shell, an axial passage, a passage leading to the internal side from the internal side, an annular groove defined in the internal side and an annular groove defined in the external side and communicated with the passage, wherein the second shell is connected with the first shell so that the pressurized air flows in the side passage of the first shell, the annular groove defined in the internal side of the second shell, the large axial passage of the first shell and the first passage of the barrel, thus causing the membrane to block the large axial passage from the small axial passage of the first shell, and that the feedback air flows in the second passage of the barrel, the annular groove defined in the external side of the second shell, the passage of the second shell, the feedback passage of the first shell, the body, the small axial passage of the first shell and the large axial passage of the first shell, thus causing the membrane to block the large axial passage of the first shell from the axial passage of the second shell. 12. The pneumatic tire-patching tool according to claim 11 wherein the first shell comprises a plurality of side passages. 13. The pneumatic tire-patching tool according to claim 10 wherein the first shell comprises two bosses formed thereon, wherein the second shell comprises two recesses defined therein for receiving the bosses of the first shell of the automatic valve. 14. An electric tire-patching tool comprising a body, a patch feeder with a first end inserted in the body and a second end for feeding the patch into a cut in a tire, a hammer for striking the first end of the patch feeder in the body, a motor, and a transmission through which the motor drives the hammer, wherein the transmission comprises a wheel centrally connected with the motor on a first side and eccentrically connected with the hammer on an opposite second side so that the operation of the motor causes the rotation of the wheel that in turn causes reciprocating of the hammer. 15. The electric tire-patching tool according to claim 14 wherein the transmission comprises a rod formed on the second side of the wheel and connected with the hammer. 16. The electric tire-patching tool according to claim 14 comprising an elastic element for connecting the patch feeder with the barrel. 17. The electric tire-patching tool according to claim 14 wherein the body comprises a handle in order to receive the motor and a barrel extending from the handle in order to receive the hammer. 18. The electric tire-patching tool according to claim 14 wherein the patch feeder comprises a clip formed at an end for clipping the patch.