DISH-WASHER

• US 3,718,149 A
• Filed: 01/22/1971
• Issued: 02/27/1973
• Est. Priority Date: 02/04/1970
• Status: Expired due to Term

• Current Assignee: Lamberto Mazza
• Original Assignee: Lamberto Mazza
• Inventors: Mazza, Lamberto
• Primary Examiner(s): Bleutge, Robert L.
• Application Number:
  US05/108,898
• Time in Patent Office: 767 Days
• Field of Search: 134/93,100,101,115R,176,200,57D
• US Class Current: 134/57.00D
• CPC Class Codes: A47L 15/4248 Arrangements for dividing the tub compartment, e.g. for simultaneous washing of delicate and normal crockery
• CPC Class Codes: A47L 15/4409 by tipping containers or opening their lids, e.g. with the help of a programmer

Abstract

In a dish-washing machine of the type having two separate washing zones in which delicate tableware and cooking utensils are respectively charged, there being two detergent dispensers, the second of which is capable of supplying detergent only to the cooking utensil washing zone and is operated as a result of the rise of the washing temperature in the zone for the cooking utensils.

Claims

1. In a dish-washing machine of the type having a wash chamber subdivided by a baffle into two zones for the loading of delicate tableware and cooking utensils respectively, a first detergent dispensing device, at least one sprayer for each zone, a single wash pump feeding wash solution to each sprayer, and an interception member controlled by means which senses the temperature of the wash solution to exclude the flow of solution heated above a pre-determined temperature to the delicate tableware in the corresponding zone, the improvement comprising a second detergent dispensing device, a means operably connected to the second dispensing device controlling said second dispensing device to feed a detergent agent contained in the second dispensing device to the washing solution in the stage of the washing cycle in which the zone containing delicate tableware is excluded from the action of the washing solution, said second dispenser being loaded with the same detergent as said first dispenser and/or with a detergent having greater chemical aggressiveness, destined specifically for washing cooking utensils.

2. The dish-washing machine in accordance with claim 1, in which said controlling means is defined by a timer-programmer and/or by a thermostat.