Patent ID: 9260988
Filing Date: 2016-02-16
CPC Classification: F01M

Claim Text:
1. A self-help oil changing apparatus comprising: a nozzle including an outer tube, an oil suction tube, and an oil filling tube, with the outer tube having an insertion end, with the oil suction tube and the oil filling tube received in the outer tube, with each of the oil suction tube and the oil filling tube having an end extending out of the insertion end of the outer tube; a clean oil tank in communication with another end of the oil filling tube; a dirty oil tank in communication with another end of the oil suction tube; an oil pressure control module including a dirty oil pump and a clean oil pump, with the dirty oil pump connected to the oil suction tube and in communication with the dirty oil tank, with the clean oil pump in communication with the oil filling tube and the clean oil tank; and a control unit electrically connected to the dirty oil pump and the clean oil pump to control operations of the dirty oil pump and the clean oil pump; with the nozzle further including an overflow tube extending through the outer tube, with the overflow tube extending out of the insertion end of the outer tube together with the ends of the oil suction tube and the oil filling tube, with the oil pressure control module further including an overflow pump connected to the overflow tube and in communication with the dirty oil tank, with the overflow pump electrically connected to the control unit.