Abstract: A dishwasher may include a tub configured to accommodate one or more items to be washed, a spray arm rotatably mounted to the tub, and configured to spray water onto the one or more items to be washed, a sump disposed at a bottom surface of the tub and configured to store water and to supply stored water to the spray arm, a fixed gear unit fixed to the tub with gear teeth arranged along an outer circumferential surface of the fixed gear unit, a rotary gear unit rotatably mounted on the spray arm and configured to engage the gear teeth of the fixed gear unit, and a link member connected to the rotary gear unit and the spray arm, where the spray arm may include, a main arm with a pair of arms, and a pair of auxiliary arms rotatably connected to the main arm.

Abstract: A dishwasher that includes: a washing tub that includes an interior space to accommodate objects; a main arm that is configured to rotate in the interior space and spray water to the objects; an auxiliary arm that is configured to rotate in the interior space and spray water to the objects; a stationary gear unit that is configured to rotate with the main arm, and that includes a plurality of gear teeth; an eccentric gear unit that is configured to rotate based on rotation of the main arm, the eccentric gear unit being in engagement with one or more teeth of the plurality of gear teeth; and a link member that is configured to (i) generate elastic force based on rotation of the eccentric gear unit and (ii) rotate the auxiliary arm based on elastic force is disclosed.

Abstract: A dishwasher may include a tub configured to accommodate one or more items to be washed, a spray arm rotatably mounted to the tub, and configured to spray water onto the one or more items to be washed, a sump disposed at a bottom surface of the tub and configured to store water and to supply stored water to the spray arm, a fixed gear unit fixed to the tub with gear teeth arranged along an outer circumferential surface of the fixed gear unit, a rotary gear unit rotatably mounted on the spray arm and configured to engage the gear teeth of the fixed gear unit, and a link member connected to the rotary gear unit and the spray arm, where the spray arm may include, a main arm with a pair of arms, and a pair of auxiliary arms rotatably connected to the main arm.

Abstract: A dishwasher may include a sump configured to store water, a main arm disposed at the sump and configured to supply water from the sump, an auxiliary arm rotatably disposed at the main arm and configured to spray water, and an auxiliary arm connection member disposed at the main arm and configured to rotatably support the auxiliary arm, where the auxiliary arm may include an auxiliary flow passage configured to allow water flow through the auxiliary arm, where the main arm may include a transfer flow passage in fluid communication with the auxiliary flow passage, where the auxiliary arm connection member may include a flow tube disposed at the main arm in fluid communication with the transfer flow passage and the auxiliary flow passage.

Abstract: A dishwasher may include a tub configured to accommodate one or more items to be washed, a spray arm rotatably mounted to the tub, and configured to spray water onto the one or more items to be washed, a sump disposed at a bottom surface of the tub and configured to store water and to supply stored water to the spray arm, a fixed gear unit fixed to the tub with gear teeth arranged along an outer circumferential surface of the fixed gear unit, a rotary gear unit rotatably mounted on the spray arm and configured to engage the gear teeth of the fixed gear unit, and a link member connected to the rotary gear unit and the spray arm, where the spray arm may include, a main arm with a pair of arms, and a pair of auxiliary arms rotatably connected to the main arm.

Abstract: A dishwasher that includes: a tub; a main arm configured to rotate about a first axis and spray water; an auxiliary arm configured to rotate about a second axis and spray water in the interior space; a stationary gear unit configured to rotate based on rotation of the main arm to generate rotational force and including a plurality of gear teeth; an eccentric rotation unit engaged with one or more teeth of the plurality of gear teeth, and configured to, (i) based on rotation of the main arm, rotate to transfer rotational force of the stationary gear unit to the auxiliary arm and, (ii) based on resistance force from the auxiliary arm, control transfer of rotational force of the stationary gear unit to the auxiliary arm; and a link member configured to rotate the auxiliary arm based on rotational force of the stationary gear unit is disclosed.

Abstract: A dishwasher may include a sump configured to store water, a main arm disposed at the sump and configured to supply water from the sump, an auxiliary arm rotatably disposed at the main arm and configured to spray water, and an auxiliary arm connection member disposed at the main arm and configured to rotatably support the auxiliary arm, where the auxiliary arm may include an auxiliary flow passage configured to allow water flow through the auxiliary arm, where the main arm may include a transfer flow passage in fluid communication with the auxiliary flow passage, where the auxiliary arm connection member may include a flow tube disposed at the main arm in fluid communication with the transfer flow passage and the auxiliary flow passage.

Abstract: A dishwasher includes a tub to provide a wash space, a first rack located inside the tub to receive a washing object and a second rack located below the first rack, a flow path tower provided at the second rack to eject wash water to the first rack, an ejection arm including a chamber for introduction of wash water, a first flow path in communication with the chamber, and second and third flow paths in communication with the chamber to eject wash water to the second rack and separated from each other, a tower separable coupler provided inside the ejection arm to connect the first flow path to the flow path tower when wash water is supplied to the first flow path, and a flow path switcher provided inside the chamber to selectively open the first, second and third flow paths according to a pressure inside the chamber.

Abstract: A dishwasher includes a tub, a spray arm, and a spray arm. The spray arm includes an arm body that defines a plurality of channels that are partitioned from each other and that are configured to carry washing water and a plurality of spray holes configured to discharge washing water from the plurality of channels toward the washing objects. The spray arm further includes a chamber disposed vertically below the arm body and configured to communicate with the plurality of channels; a channel guider configured to supply washing water from the spray arm holder to the chamber; and a channel switch unit accommodated in the chamber and configured to open and close at least a portion of the plurality of channels.

Abstract: A dishwasher may include a sump configured to store water, a main arm disposed at the sump and configured to supply water from the sump, an auxiliary arm rotatably disposed at the main arm and configured to spray water, and an auxiliary arm connection member disposed at the main arm and configured to rotatably support the auxiliary arm, where the auxiliary arm may include an auxiliary flow passage configured to allow water flow through the auxiliary arm, where the main arm may include a transfer flow passage in fluid communication with the auxiliary flow passage, where the auxiliary arm connection member may include a flow tube disposed at the main arm in fluid communication with the transfer flow passage and the auxiliary flow passage.

Abstract: A dishwasher may include a tub configured to accommodate one or more items to be washed, a spray arm rotatably mounted to the tub, and configured to spray water onto the one or more items to be washed, a sump disposed at a bottom surface of the tub and configured to store water and to supply stored water to the spray arm, a fixed gear unit fixed to the tub with gear teeth arranged along an outer circumferential surface of the fixed gear unit, a rotary gear unit rotatably mounted on the spray arm and configured to engage the gear teeth of the fixed gear unit, and a link member connected to the rotary gear unit and the spray arm, where the spray arm may include, a main arm with a pair of arms, and a pair of auxiliary arms rotatably connected to the main arm.

Abstract: A dishwasher may include a tub configured to accommodate one or more items to be washed, a spray arm rotatably mounted to the tub, and configured to spray water onto the one or more items to be washed, a sump disposed at a bottom surface of the tub and configured to store water and to supply stored water to the spray arm, a fixed gear unit fixed to the tub with gear teeth arranged along an outer circumferential surface of the fixed gear unit, a rotary gear unit rotatably mounted on the spray arm and configured to engage the gear teeth of the fixed gear unit, and a link member connected to the rotary gear unit and the spray arm, where the spray arm may include, a main arm with a pair of arms, and a pair of auxiliary arms rotatably connected to the main arm.

Abstract: A dishwasher may include a tub configured to accommodate one or more items to be washed, a spray arm rotatably mounted to the tub, and configured to spray water onto the one or more items to be washed, a sump disposed at a bottom surface of the tub and configured to store water and to supply stored water to the spray arm, a fixed gear unit fixed to the tub with gear teeth arranged along an outer circumferential surface of the fixed gear unit, a rotary gear unit rotatably mounted on the spray arm and configured to engage the gear teeth of the fixed gear unit, and a link member connected to the rotary gear unit and the spray arm, where the spray arm may include, a main arm with a pair of arms, and a pair of auxiliary arms rotatably connected to the main arm.

Abstract: A dishwasher may include a tub configured to accommodate one or more items to be washed, a spray arm rotatably mounted to the tub, and configured to spray water onto the one or more items to be washed, a sump disposed at a bottom surface of the tub and configured to store water and to supply stored water to the spray arm, a fixed gear unit fixed to the tub with gear teeth arranged along an outer circumferential surface of the fixed gear unit, a rotary gear unit rotatably mounted on the spray arm and configured to engage the gear teeth of the fixed gear unit, and a link member connected to the rotary gear unit and the spray arm, where the spray arm may include, a main arm with a pair of arms, and a pair of auxiliary arms rotatably connected to the main arm.

Abstract: The present invention relates to a washing machine including an outer tub which accommodates wash water, an inner tub which is disposed in the outer tub to accommodate laundry, and which rotates around a vertical axis, a motor which provides torque, an outer shaft which has a hollow, and which rotates the inner tub, an inner shaft which rotates inside the hollow by the motor, a pulsator which is disposed in the inner tub and is connected to the inner shaft, and a clutch which is screw-coupled to the inner shaft in the hollow formed at the outer shaft, and which is engaged with the outer shaft so as to be raised by the rotation of the inner shaft.

Abstract: The present invention relates to a washing machine including an outer tub which accommodates wash water, an inner tub which is disposed in the outer tub to accommodate laundry, and which rotates around a vertical axis, a motor which provides torque, an outer shaft which has a hollow, and which rotates the inner tub, an inner shaft which rotates inside the hollow by the motor, a pulsator which is disposed in the inner tub and is connected to the inner shaft, and a clutch which is screw-coupled to the inner shaft in the hollow formed at the outer shaft, and which is engaged with the outer shaft so as to be raised by the rotation of the inner shaft.

Abstract: A dishwasher includes a cabinet having a tub, a pump and at least one spray arm. The at least one spray arm has a flow path guide and first and second flow channels separated from each other. The flow path guide has a first opening to allow wash water to flow to the first flow channel and a second opening to allow wash water to flow to the second flow channel. A valve is coupled to the flow path guide and is configured to open or close one of the first opening and the second opening. The valve includes a rotatable float. The rotatable float closes the first opening while opening the second opening at a first point in time, and the rotatable float rotates to open the second opening while closing the second opening at a second point in time.

Abstract: A dishwasher may include a sump configured to store water, a main arm disposed at the sump and configured to supply water from the sump, an auxiliary arm rotatably disposed at the main arm and configured to spray water, and an auxiliary arm connection member disposed at the main arm and configured to rotatably support the auxiliary arm, where the auxiliary arm may include an auxiliary flow passage configured to allow water flow through the auxiliary arm, where the main arm may include a transfer flow passage in fluid communication with the auxiliary flow passage, where the auxiliary arm connection member may include a flow tube disposed at the main arm in fluid communication with the transfer flow passage and the auxiliary flow passage.

Abstract: The present invention provides a dust collecting apparatus for a vacuum cleaner, comprising: a first cyclone installed in a first case and configured to separate dust from air introduced thereinto together with foreign substances and to discharge the separated dust to a first dust storage unit; a second cyclone mounted above the first cyclone and configured to separate fine dust from the air from which the dust is separated by the first cyclone and to discharge the separated fine dust to a second dust storage unit; a compression device configured such that at least a part thereof performs normal rotation in one direction and reverse rotation in the direction opposite to that of the normal rotation along the outer peripheral surface of a second case having the second dust storage unit therein to compress the dust stored in the first dust storage unit; a screw rotatably installed above the compression device and having a guide vane spirally extending along the outer periphery thereof to guide the collection of

Abstract: A dishwasher that includes: a tub; a main arm configured to rotate about a first axis and spray water; an auxiliary arm configured to rotate about a second axis and spray water in the interior space; a stationary gear unit configured to rotate based on rotation of the main arm to generate rotational force and including a plurality of gear teeth; an eccentric rotation unit engaged with one or more teeth of the plurality of gear teeth, and configured to, (i) based on rotation of the main arm, rotate to transfer rotational force of the stationary gear unit to the auxiliary arm and, (ii) based on resistance force from the auxiliary arm, control transfer of rotational force of the stationary gear unit to the auxiliary arm; and a link member configured to rotate the auxiliary arm based on rotational force of the stationary gear unit is disclosed.