Dishwashing machine and liquid distributor therefor

Claim 1

IN A DISHWASHER, (A) A WASHING COMPARTMENT ADAPTED FOR THE COLLECTION OF WATER IN THE LOWER PART THEREOF, (B) AN ELONGATED SUBSTANTIALLY CYLINDRICAL HOUSING, (C) MEANS FOR MOUNTING SAID HOUSING IN SAID LOWER PART OF SAID COMPARTMENT WITH THE AXIS THEREOF EXTENDING HORIZONTALLY, (1) SAID HOUSING BEING FORMED WITH A LONGITUDINAL OPENING IN THE UPPER PORTION THEREOF ABOVE THE LEVEL OF THE WATER COLLECTED IN SAID COMPARTMENT, (2) THE PORTION OF SAID HOUSING OPPOSITE SAID OPENING HAVING AN AREA OF PERFORATIONS WHICH ARE SUFFICIENTLY SMALL TO CONSTITUTE A LIQUID FILTER, (D) AN IMPELLER SHAFT ROTATABLY MOUNTED COAXIALLY IN SAID CYLINDRICAL HOUSING, (E) IMPELLER BLADES FIXED ON SAID SHAFT AND EXTENDING LONGITUDINALLY SUBSTANTIALLY THE ENTIRE LENGTH OF SAID HOUSING, (1) SAID BLADES EXTENDING GENERALLY RADIALLY FROM SAID SHAFT AND TERMINATING IN CLOSE PROXIMITY TO THE INNER SURFACE OF SAID HOUSING, (F) MEANS FOR ROTATING SAID SHAFT AT A RELATIVELY HIGH SPEED TO CAUSE SAID BLADES TO DISCHARGE WATER THROUGH SAID OPENING IN A SUBSTANTIALLY FLAT SHEET, (G) AND MEANS FOR OSCILLATING SAID HOUSING ABOUT ITS AXIS AT A RELATIVELY SLOW RATE THROUGH AN ANGLE SUFFICIENT TO CAUSE SAID SHEET TO SWEEP BACK AND FORTH ACROSS SUBSTANTIALLY THE ENTIRE WASHING COMPARTMENT AND TO CAUSE A MAJOR PORTION OF SAID AREA OF PERFORATIONS TO MOVE BACK AND FORTH FROM BELOW TO ABOVE THE SURFACE OF THE WATER COLLECTED IN THE LOWER PART OF SAID COMPARTMENT.