IP Library Granted Patent US 10,820,776
Granted Patent B2
US 10,820,776 · App. 15/695,888 · Granted Nov 3, 2020

Fluid flow structure and method of use for continuous motion washing machine

Inventors: John W. Cantrell (San Antonio, TX); Mark Churchill (Grain Valley, MO); David Robert Gast (Lenexa, KS); John N. McCreight (Leawood, KS); Bryon J. London (Prairie Village, KS)
Assignee: Unified Brands, Inc.
A47L15/4221A47L15/0092A47L15/08B08B3/006B08B3/02B08B3/04B08B3/102F15D1/0005A47L15/16Y10T137/8593
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Quick Facts
Patent No.
US 10,820,776
App. No.
15/695,888
Granted
Nov 3, 2020
Kind
B2
Abstract

A washing machine and/or a fluid flow structure for a washing machine wash tank is provided. The wash tank is generally rectangular and includes a bottom wall, two side walls and two end walls extending upwardly from said bottom wall. The wash tank further includes at least one flow directional opening in at least one of the walls. In a preferred embodiment, the wash tank includes a plurality of flow directional openings positioned along one of the side walls of the wash tank. A fluid flow structure is located within said wash tank, which includes a fluid flow guide surface, and a support for said guide surface. The guide surface includes an expansion structure that is designed to counteract expansion of the guide surface that occurs during operation of the washing machine. In one embodiment the expansion structure is an expansion slot that engages a portion of the guide surface. As the guide surface expands the expansion slot is pressed against the portion of the guide surface, causing the expansion slot to expand into a relief area associated with the expansion slot at a location generally opposite of the portion of the guide surface.

Claims (42)

1. A fluid flow structure for a washing machine wash tank the fluid flow structure comprising:

a removable fluid flow guide surface, said guide surface being capable of alternatively being inserted into and removed entirely from the washing machine wash tank, said guide surface including at least one region contoured inconsistently from the contour of at least one corresponding wall of the washing machine wash tank; and

a support for said guide surface, wherein said support creates a gap between said guide surface and an interior surface of at least one wall of the washing machine wash tank;

wherein said guide surface includes an expansion structure engaged with a portion of said support to counteract expansion of said guide surface; and

wherein said expansion structure includes an expansion slot that engages a finger of said support.

2. The fluid flow structure as claimed in claim 1 wherein said expansion slot that is associated with a relief area within said fluid flow guide surface.

3. The fluid flow structure as claimed in claim 2 wherein said expansion slot expands into said relief area as said fluid flow guide surface expands and causes said expansion slot to press against said portion of said support.

4. The fluid flow structure as claimed in claim 3 wherein said relief area includes a bottom surface that defines a maximum expansion of said expansion slot and functions as a change out indicator for said fluid flow guide surface.

5. The fluid flow structure as claimed in claim 2 wherein said relief area comprises a primary relief area and a secondary relief area.

6. The fluid flow structure as claimed in claim 1 wherein a circulating wash action is created in the washing machine wash tank whether said guide surface is inserted into or removed from the washing machine wash tank.

7. The fluid flow structure as claimed in claim 1 wherein said guide surface and/or said support are capable of flexible motion independent of the walls of the washing machine wash tank.

8. The fluid flow structure as claimed in claim 7 wherein said flexible motion at least partially isolates impacts, noise or other vibrations acting on said guide surface from acting on the walls of the washing machine wash tank.

9. The fluid flow structure as claimed in claim 8 wherein said impacts, noise or other vibrations acting on said guide surface causes said guide surface to expand.

10. The fluid flow structure as claimed in claim 1 wherein said guide surface is capable of alternatively being inserted into and removed entirely from the washing machine wash tank without the use of any tools.

11. The fluid flow structure as claimed in claim 1 wherein said support is removably positioned within the washing machine wash tank.

12. The fluid flow structure as claimed in claim 1 wherein said at least one region contoured inconsistently from the contour of at least one corresponding wall of the washing machine wash tank is generally curved.

13. The fluid flow structure as claimed in 1 wherein said fluid flow guide surface is generally flexible.

14. The fluid flow structure as claimed in claim 1 wherein said support comprises a plurality of interconnected ribs.

15. The fluid flow structure as claimed in claim 1 wherein said fluid flow guide surface defines a washing area within said wash tank, said washing area being generally opposite said gap with respect to said fluid flow guide surface.

16. The fluid flow structure as claimed in claim 1 wherein said fluid flow guide surface and said support comprise a plurality of fluid flow guide surfaces and/or supports within the wash tank.

17. The fluid flow structure as claimed in claim 16 further comprising a divider member at least primarily held in place between two adjacent sets of said plurality of fluid flow guide surfaces and/or supports.

18. A fluid flow structure for a washing machine tank the fluid flow structure comprising:

a removable fluid flow guide surface, said guide surface being capable of alternatively being inserted into and removed entirely from the washing machine tank, said guide surface including at least one region contoured inconsistently from the contour of at least one corresponding wall of the washing machine wash tank; and

a support for said guide surface,

wherein said support creates a gap between said guide surface and an interior surface of at least one wall of the washing machine wash tank;

wherein said guide surface includes an expansion structure engaged with a portion of said support to counteract expansion of said guide surface,

wherein said expansion structure includes an expansion slot that is associated with a relief area within said fluid flow guide surface, and

wherein said expansion slot expands into said relief area as said fluid flow guide surface expands and causes said expansion slot to press against said portion of said support.

19. The fluid flow structure as claimed in claim 18 wherein said relief area includes a bottom surface that defines a maximum expansion of said expansion slot and functions as a change out indicator for said fluid flow guide surface.

20. The fluid flow structure as claimed in claim 18 wherein said relief area comprises a primary relief area and a secondary relief area.

21. The fluid flow structure as claimed in claim 18 wherein a circulating wash action is created in the washing machine wash tank whether said guide surface is inserted into or removed from the washing machine wash tank.

22. The fluid flow structure as claimed in claim 18 wherein said guide surface and/or said support are capable of flexible motion independent of the walls of the washing machine wash tank.

23. The fluid flow structure as claimed in claim 22 wherein said flexible motion at least partially isolates impacts, noise or other vibrations acting on said guide surface from acting on the walls of the washing machine wash tank.

24. The fluid flow structure as claimed in claim 23 wherein said impacts, noise or other vibrations acting on said guide surface causes said guide surface to expand.

25. The fluid flow structure as claimed in claim 18 wherein said guide surface is capable of alternatively being inserted into and removed entirely from the washing machine wash tank without the use of any tools.

26. The fluid flow structure as claimed in claim 18 wherein said support is removably positioned within the washing machine wash tank.

27. The fluid flow structure as claimed in claim 18 wherein said at least one region contoured inconsistently from the contour of at least one corresponding wall of the washing machine wash tank is generally curved.

28. The fluid flow structure as claimed in 18 wherein said fluid flow guide surface is generally flexible.

29. The fluid flow structure as claimed in claim 18 wherein said support comprises a plurality of interconnected ribs.

30. The fluid flow structure as claimed in claim 18 wherein said fluid flow guide surface defines a washing area within said wash tank, said washing area being generally opposite said gap with respect to said fluid flow guide surface.

31. The fluid flow structure as claimed in claim 18 wherein said fluid flow guide surface and said support comprise a plurality of fluid flow guide surfaces and/or supports within the wash tank.

32. The fluid flow structure as claimed in claim 31 further comprising a divider member at least primarily held in place between two adjacent sets of said plurality of fluid flow guide surfaces and/or supports.

Assignments (2)
MERGER AND CHANGE OF NAME Recorded Jan 18, 2024
From: UNIFIED BRANDS, INC.; ELECTROLUX PROFESSIONAL, INC.
To: ELECTROLUX PROFESSIONAL, INC.
Reel/Frame 066351/0697 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 6, 2017
From: CANTRELL, JOHN W.; CHURCHILL, MARK; GAST, DAVID ROBERT; MCCREIGHT, JOHN N.; LONDON, BRYON J.
To: UNIFIED BRANDS, INC.
Reel/Frame 043496/0494 →
Continuity (13)
Continuation 14379190 · Aug 15, 2014
Continuation PCTUS2013026705 · Feb 19, 2013
Continuation In Part 12765838 · Apr 22, 2010
Provisional Application 61600581 · Feb 17, 2012
Provisional Application 61171752 · Apr 22, 2009
Provisional Application 61177105 · May 11, 2009
Provisional Application 61227686 · Jul 22, 2009
Provisional Application 61231987 · Aug 6, 2009
Provisional Application 61233811 · Aug 13, 2009
Provisional Application 61236801 · Aug 25, 2009
Provisional Application 61255083 · Oct 26, 2009
Provisional Application 61266430 · Dec 3, 2009
Related Publication 20180055331A1 · Mar 1, 2018
Cited By (1)
US 12,490,879