Dishwashing apparatus having improved pump means

• US 3,294,102 A
• Filed: 12/09/1964
• Issued: 12/27/1966
• Est. Priority Date: 12/09/1964
• Status: Expired due to Term

• Current Assignee: James G. Ruspino, Wilbur G. Peyer
• Original Assignee: James G. Ruspino, Wilbur G. Peyer
• Inventors: Ruspino, James G., Peyer, Wilbur G.
• Application Number:
  US04/417,045
• Time in Patent Office: 748 Days
• US Class Current: 134/186
• CPC Class Codes: A47L 15/23 moved by means of the sprays
• CPC Class Codes: A47L 15/4225 Arrangements or adaption of recirculation or discharge pumps

Claims

1. A DISHWASHING APPARATUS, COMPRISING:

MEANS FORMING A LIQUID SUMP;

MEANS FOR REMOVING LIQUID FROM SAID SUMP;

PUMP MEANS IN SAID SUMP ROTATABLE IN ONE DIRECTION DURING NORMAL DISHWASHING TO PUMP LIQUID THROUGH THE DISHWASHING APPARATUS AND ROTATABLE IN THE OPPOSITE DIRECTION DURING REMOVAL OF LIQUID FROM SAID SUMP;

AND MEANS COOPERATING WITH SAID PUMP MEANS FOR VENTING AIR INTO SAID PUMP MEANS DURING SAID OPPOSITE DIRECTION ROTATION TO SUBSTANTIALLY PREVENT NOISE CAUSED BY LIQUID IN SAID PUMP MEANS AND TO SUBSTANTIALLY REDUCE THE POWER REQUIREMENTS OF SAID PUMP MEANS DURING SAID LIQUID REMOVAL, SAID PUMP MEANS INCLUDING A PUMP HOUSING HAVING AN IMPELLER MEANS AND A CUT-WATER CLEARANCE AREA THEREIN, SAID AIR VENTING MEANS LEADING TO ADJACENT BOTH SAID IMPELLER MEANS AND SAID CUT-WATER CLEARANCE AREA.