Patent ID: 7874815
Filing Date: 2011-01-25
Classification: B08B,F04B,F16H,Y10T

Abstract:
1. A high-pressure cleaning appliance with a motor-pump unit, comprising: a pump head, a piston subassembly positioned on the pump head, a drive motor seated on the piston subassembly, a planetary gearing disposed within the piston subassembly on a side of the piston subassembly where the drive motor is seated, the piston subassembly having a plurality of pistons which are movable back and forth in a longitudinal direction of the motor-pump unit, each of the pistons penetrating into a pumping chamber of the pump head, a swash-plate unit which interacts with the pistons, and the planetary gearing having a sun gear which is connected in a rotationally fixed manner to a motor shaft of the drive motor and is coupled to a ring gear via a plurality of planet gears rotatably mounted on a planet gear carrier, the planet gear carrier being connected in a rotationally fixed manner to the swash-plate unit, and the piston subassembly having an oil sump into which penetrates an oil-delivery tube which is aligned coaxially with the motor shaft and is connected in a rotationally fixed manner to the planet gear carrier, said oil-delivery tube feeding oil to the planetary gearing from the oil sump, wherein: