Water powered dishwasher

• US 3,934,822 A
• Filed: 07/29/1974
• Issued: 01/27/1976
• Est. Priority Date: 07/29/1974
• Status: Expired due to Term

• Current Assignee: Jack Ross
• Original Assignee: Jack Ross
• Inventors: Ross, Jack
• Primary Examiner(s): King, Lloyd L.
• Application Number:
  US05/492,393
• Time in Patent Office: 547 Days
• Field of Search: 239/310, 239/318, 239/226, 134/93, 134/100, 134/176, 134/179
• US Class Current: 239/226
• CPC Class Codes: A47L 15/23 moved by means of the sprays
• CPC Class Codes: A47L 15/4427 entrained in the water supply line by a pressure drop, e.g. resulting from a Venturi throat

Abstract

An improved water powered dishwasher is provided having an improved soap dispenser which will not rust or clog with prolonged use. The soap dispenser utilizes suction to admix the soap from the dispenser with the water and provides a more uniform soap-water mixture for spraying onto the dishes.

Claims

1. A soap dispenser for a water powered dishwasher, suitable for dispensing soap from storage to be mixed uniformly with water passing through a water inlet, the dishwasher having a container shell and top defining a washing and rinsing cavity therebetween a water inlet extending from one side of the container shell below the bottom of the shell, to the centre thereof into a washing cavity, a water inlet and a water outlet, and rotatable spray means adapted to rotate about the water inlet extending into the cavity, said soap dispenser comprising a soap storage in open communication with the atmosphere through at least a downwardly directed aperture, through which soap is discharged, an upwardly directed opening in the top of the water inlet disposed directly below the downwardly directed aperture for receiving the discharged soap and means in the water inlet when water is passing through the inlet, to cause a continuous suction on the soap discharged from said storage and assist to draw the soap through the opening into the water inlet to be mixed with the water passing therethrough.

2. The apparatus of claim 1 wherein the soap storage is also in open communication with the atmosphere at the top thereof when the dishwasher is in operation.

3. The apparatus of claim 1, wherein said means in the water inlet comprises a restricted tube of lessor radial extent than the minimum radial extent of the inlet and so secured within the inlet to receive all water entering the mouth of the water inlet, pass it below the upwardly directed opening in the water inlet still controlled by the said restricted tube, and discharge the water into the inlet on the side of the opening remote from the mouth, whereat soap is mixed with the water.

4. The apparatus of calim 3 wherein said opening in the water inlet is disposed in a portion of the water inlet of of greater radial extent than the remaining portion of the water inlet.

5. A water powered dishwasher, comprising a container shell, a top adapted to seat on said container shell to define therebetween a washing and rinsing cavity, a water inlet and a water outlet, a soap storage having an aperture in the bottom thereof in communication with the atmosphere for the downward discharge of soap therethrough, said water inlet extending from its mouth proximate one side of the container shell, below the bottom of the shell to the center thereof and into the cavity secured in substantially vertical relation to said bottom at all times, said water inlet having a cylindrical tubular first portion of predetermined diameter extending longitudinally from its mouth a predetermined distance to a restricted tubular portion of predetermined length secured thereto to receive all water passing through said first portion, said restricted portion of lesser outer diameter than the internal diameter of said first portion, a second tubular portion of greater outer diameter than said first portion but of substantially the same internal diameter as the outer diameter of said first portion to be secured to said first portion at the end thereof remote said mouth, said second portion having an upwardly directed opening therein when secured to said first portion, said restricted portion being such as to extend from said first portion, below the opening in said second portion when said second portion is secured to said first portion to the side of the opening remote the mouth of the water inlet, the portion of said water inlet within the cavity having a first aperture disposed proximate its upper end to discharge a column of water substantially perpendicular to the bottom of said container shell, and at least one second aperture of lesser cross-sectional area than the water column, disposed in said water inlet means below said first aperture;

rotatable spray means secured for rotation about the inlet means, said rotatable spray means have a lower tube disposed substantially parallel to the bottom of said container shell and in communication with said at least one second aperture to receive a flow of water therfrom;

said lower tube having apertures diposed in the wall of said tube to effect outflow of jets of water therefrom, each jet having horizontal and vertical force components;

said rotatable spray means further comprising a perpendicularly disposed tube relative to said container shell bottom and in communication with said first aperture to receive said column of water and to discharge the water through apertures in the wall of said tube as jets of water, each jet having at least a horizontal force component.

6. The dishwasher of claim 5 wherein the internal diameter of said second portion from proximate the end of the restricted tubular portion remote said first portion to its outlet within the cavity, is substantially the same as the internal diameter of said first portion.

7. The dishwasher of claim 5 wherein said rotatable spray means is maintained for rotatable co-operation with said inlet means by retaining means extending through said rotatable spray means to ride in a circumferentially disposed channel in the outer wall of said inlet, said channel being disposed in said wall in a plane parallel to the bottom of said container shell;

the portion of said retaining means which projects into said channel having a smooth surface to contact a downwardly facing ledge defining the furthestmost upper extent of said channel when said retaining means is moved upwardly.

8. The dishwasher of claim 5 wherein said rotatable spray means includes a housing proximate its lower end to support said lower and perpendicularly disposed tubes for rotation about said inlet means, and said housing comprises a polymeric material.

9. The dishwasher as claimed in claim 8 wherein said housing comprises polyethylene.

10. The dishwasher as claimed in claim 5 wherein said water passage of said inlet means is maintained substantially perpendicular to the bottom of said container shell at all times by laterally extending flange means disposed on said inlet means on the portion thereof that extends into said cavity about the bottom of said container shell so as to seat proximate the upper surface of the bottom of said container shell;

and by threaded nut receiving means disposed below the bottom of said container shell to receive a nut to be threaded thereon to contact the under surface of the bottom of said container shell, and so as to urge said flange downwards towards said bottom.

11. A dishwasher as claimed in claim 5 wherein said top is reinforced by concentrically disposed circular steps disposed at substantially the centre of said top.

12. A dishwasher as claimed in claim 5 wherein said top sits on a ledge formed in said container shell;

and further comprises cutlery holding means having a plurality of apertures formed in an inwardly disposed extension of said ledge.

13. A dishwasher as claimed in claim 5 wherein said perpendicularly disposed tube further includes an extension thereof disposed at substantially right angles thereto, proximate said top when said top is closed onto said container shell;

said extension having apertures therein to discharge water and having the end thereof which is remote from said perpendicularly disposed tube being further bent and directed generally towards said container shell bottom;

said extension being closed at said remote end and having an aperture in said ent to discharge water in a plan substantially perpendicular to the plane of disposition of the apertures disposed in said extension.

14. The dishwasher as claimed in claim 5 wherein the ratio of the cross-sectional area of said at least one second aperture in the water inlet extending into the cavity to the cross-sectional area of said first aperture is about 1:

2.

15. The dishwasher as claimed in claim 5 wherein the internal diameter of said at least one second aperture and the diameter of said first aperture is 3/16 inch and 3/8 inch respectively, and the internal diameter of the first tube portion and the restricted cylindrical portion are 1/4 inch and 5/32 inch respectively.

16. For use in a water powered dishwasher having a container shell and top defining a washing and rinsing cavity therebetween, a water inlet and a water outlet and rotatable spray means, an improved soap dispenser comprising a soap storage having a generally downwardly directed discharge aperture disposed above a portion of the inlet intermediate the mouth of the inlet and the washing cavity and means in the water inlet to act on the soap discharged from said soap storage by suction to draw the soap into the water inlet to be mixed with the water, said means having a second tubular portion extending below the soap storage having an upwardly directed opening disposed directly below the discharge aperture in the storage, and secured at either end thereof, first and third equal diameter tubular portions of lesser outer diameter than the outer diameter of said second portion but of substantially the same outer diameter as the internal diameter of said second portion, and a fourth tubular portion of lesser outer diameter than the internal diameter of said first or third portions, attached at one end to said first portion and secured thereto to receive all water passing therethrough, said fourth portion extending through said second portion and terminating proximate the juncture of said second and third portions whereby soap drawn into said opening by gravity and suction, mixes with water at the juncture of said second and third tubular portions.

17. The soap dispenser of claim 16 wherein the internal diameters of said first tubular portion and said fourth portion are 1/4 inch and 5/32 inch respectively.