Controlled release dishwasher detergent dispenser

• US 5,186,912 A
• Filed: 01/03/1991
• Issued: 02/16/1993
• Est. Priority Date: 01/03/1991
• Status: Expired due to Fees

• Current Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Original Assignee: Ecolab, Inc.
• Inventors: Satoh, Yoichi, Steindorf, Richard E., Maeda, Katsumi, Boche, Daniel K.
• Primary Examiner(s): Warden, Robert J.
• Assistant Examiner(s): Blythe, Stephanie
• Application Number:
  US07/637,054
• Time in Patent Office: 775 Days
• Field of Search: 422/263, 422/264, 422/264 B, 422/266, 422/274, 422/275, 422/276, 134/93, 252/90, 137/268, 222/651, 68/17 R
• US Class Current: 422/263
• CPC Class Codes: A47L 15/4445 Detachable devices
• CPC Class Codes: Y10T 137/4891 With holder for solid, flaky or pulverized material to be dissolved or entrained

Abstract

A dispenser (10) and method for washing dishes and utensils in a dishwashing machine are disclosed. The dispenser (10) is comprised of a container (11) and lid (12), the dispenser containing a solid detergent composition (13). A slot (23) in a side wall (17) and baffle (26) allow for controlled drainage of the detergent solution. The lid (12) has a plurality of openings (18) through which water from the dishwashing machine enters, so as to dissolve the solid detergent (13). The dispenser (10) is positioned within the washing chamber (20) of a dishwashing machine (19).

Claims

1. A dispenser for dishwashing machine detergent, comprising:

a) a container having a bottom wall and side walls, one of said side walls having a slot therein for egress of solution, said slot being continuous and elongated and having an upper end and a lower end, said lower end being proximate said bottom wall;

b) a removable lid for a top portion of said container, said lid having a plurality of openings for ingress of solution;

c) means for removably covering the openings in the lid;

d) a solid composition in the container, wherein an upper surface of said composition is below the upper end of said slot, and water dissolves the upper surface of said composition and drains from said slot;

e) a planar sheet which is parallel to one of said side walls and which substantially covers said slot, said sheet being spaced away from said slot.

2. The dispenser according to claim 1, wherein the solid composition is a monolithic solid.

3. The dispenser according to claim 1, wherein said plurality of openings are approximately 3.0 to 3.5 millimeters in diameter.

4. The dispenser according to claim 3, wherein said lid has four spaced-apart openings.

5. The dispenser according to claim 1, wherein the container is substantially triangular in shape and has three side walls, one of which is a hypotenuse side wall.

6. The dispenser according to claim 5, wherein said hypotenuse side wall has a single slot which spans its height.

7. The dispenser according to claim 6, wherein said sheet is interconnected at an upper end to said lid.

8. The dispenser according to claim 4, wherein said container and lid are made of a water resistant material.

9. The dispenser according to claim 1, wherein said means removably covering the openings in said lid are tabs which cover the openings and are adhered to the lid outer surface.

10. A dispenser for dishwashing machine detergent, comprising:

a) a container having a bottom wall, a pair of isosceles side walls, a hypotenuse side wall, and a top portion, said hypotenuse side wall having a single elongate slot therein which substantially spans the height of said hypotenuse side wall and extends proximate said bottom wall, said slot having an upper end and a lower end;

b) a removable lid covering said top portion, said lid having approximately four openings which are approximately 3.0 to 3.5 millimeters in diameter;

c) means for removably covering the openings in said lid;

d) a planar sheet proximate the slot in said hypotenuse side wall, an upper end of said sheet being attached to said lid so as to substantially cover said slot and be spaced away from said slot; and

e) a solid composition in the container, a bottom portion of said container being completely filled with said solid composition, wherein an upper surface of said composition is below the upper end of said slot, and water dissolves the upper surface of said composition and drains from said slot.

11. The dispenser according to claim 10, wherein the solid composition is a monolithic solid.

12. The dispenser according to claim 11, wherein said container and lid are made of a water resistant material.

13. The dispenser according to claim 12, wherein said means removably covering the openings are tabs which cover the openings and have adhesive thereon for adhering to the dispenser'"'"'s outer surface.