Domestic appliance

• US 3,324,796 A
• Filed: 02/01/1966
• Issued: 06/13/1967
• Est. Priority Date: 03/26/1963
• Status: Expired due to Term

• Current Assignee: Frank E. Laflame
• Original Assignee: Frank E. Laflame
• Inventors: Laflame, Frank E.
• Application Number:
  US04/524,048
• Time in Patent Office: 497 Days
• US Class Current: 415/198.1
• CPC Class Codes: A47L 15/4202 Water filter means or strainers
• CPC Class Codes: A47L 15/4225 Arrangements or adaption of recirculation or discharge pumps

Claims

1. IN A DISHWASHER, THE COMBINATION OF, A WATER CONTAINER HAVING A SUMP AND A DRAIN, A SUPPORTING PLATE CONNECTED TO AND FORMING A PORTION OF THE BOTTOM OF SAID SUMP, FLUID CIRCULATING MEANS INCLUDING AN ELONGATED TUBULAR OPEN-ENDED PUMP CASING ON SAID PLATE FORMING A PUMPING CHAMBER HAVING AN INLET COMMUNICATING WITH SAID SUMP AND AN OUTLET COMMUNICATING WITH A POINT OF DISTRIBUTION ABOVE SAID SUMP, A MIXED FLOW TURBINE IMPELLER WITHIN SAID CASING, A REVERSIBLE ELECTRIC MOTOR OPERABLE IN A FIRST DIRECTION DURING A WASHING CYCLE AND IN A REVERSE DIRECTION DURING A DRAIN CYCLE, MEANS FOR CONNECTING SAID MOTOR TO SAID MIXED FLOW IMPELLER, SAID MIXED FLOW IMPELLER DRAWING FLUID FROM SAID SUMP THROUGH SAID CASING TO THE POINT OF DISTRIBUTION DURING SAID WASHING CYCLE DRAIN PUMP MEANS SUPPORTED ON SAID WATER CONTAINER BELOW SAID PUMP CASING, SAID DRAIN PUMP MEANS INCLUDING A SECOND CASING FORMING A PUMPING CHAMBER HAVING AN INLET IN COMMUNICATION WITH SAID SUMP AND AN OUTLET IN COMMUNICATION WITH SAID DRAIN, SAID TUBULAR OPEN-ENDED CASING OVERLYING SAID DRAIN PUMP MEANS AND HAVING ALL PORTIONS OF THE OUTER SURFACE THEREOF SPACED A SUBSTANTIAL DISTANCE FROM SAID WATER CONTAINER TO ALLOW FREE RETURN OF FLUID TO SAID SUMP, AN IMPELLER IN SAID PUMPING CHAMBER OF SAID DRAIN PUMP MEANS CONNECTED TO SAID MOTOR TO BE DRIVEN THEREBY DURING THE DRAIN CYCLE TO PUMP FLUID FROM SAID SUMP INTO SAID DRAIN, SAID INLET IN SAID DRAIN PUMP MEANS UNDERLYING SAID INLET TO SAID PUMP CASING, SAID MIXED FLOW TURBINE IMPELLER DURING THE DRAIN CYCLE PRODUCING A SECOND CIRCULATION OF FLUID FROM SAID SUMP THROUGH SAID CASING TO SAID POINT OF DISTRIBUTION WHEREBY FLUID IN SAID SUMP FREELY FLOWS THEREFROM INTO SAID INLET OF SAID DRAIN PUMP MEANS DURING THE DRAIN CYCLE OF OPERATION WITHOUT THE BEING BLOCKED BY FLUID FLOW FROM SAID FLUID CIRCULATING MEANS.