MULTI-LOBE FILTER BAG PRINCIPALLY FOR A POOL CLEANER

Abstract

Filters principally for automatic swimming pool cleaners are detailed. The filters include bags of porous material formed into at least two lobes. At least one divider separates a primary flow path through the bags from multiple debris-collecting pockets.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side elevational view of an exemplary filter bag of the present invention.

FIG. 2 is a top plan view of the filter bag of FIG. 1 illustrating its dual-lobe structure as in use.

FIG. 3 is a rear elevational view of the filter bag of FIG. 1 showing the lobes fully extended.

DETAILED DESCRIPTION

Depicted in FIGS. 1-3 is exemplary bag 10 of the present invention. Bag 10 preferably is to be used with an automatic pool cleaner, such as those shown or referenced in any of the Herlehy, Silverstein, or Meritt-Powell patents or the Meritt-Powell publication. Use of the invention is not necessarily so limited, however, as bag 10 conceivably could be utilized elsewise as appropriate or desired.

Bag 10 advantageously comprises primary walls 14 and 18 and secondary walls 22 and 26. Each of walls 14, 18, 22, and 26 may be formed of one or more sheets or pieces of porous material. In use, water should be able to pass through walls 14, 18, 22, and 26, whereas most or all debris entrained in the water should not. As a result, bag 10 may serve to filter debris from flowing water and retain the filtered debris within the confines of walls 14, 18, 22, and 26.

Sheets forming primary walls 14 and 18 are generally complementary in shape. Walls 14 and 18 are connected to define front margin 30 extending from a generally open lower bag mouth 34 to approximately the top 38 of bag 10. Front margin 30 preferably is curved as shown in FIG. 1. Front margin 30 need not necessarily be curved, however, nor if curved need it be curved in the manner depicted in FIG. 1.

Bag mouth 34 may be created by not interconnecting forward lower edges of walls 14 and 18. FIG. 1 illustrates forward lower edge 42 of wall 14; a similar edge exists for wall 18. Instead, forward lower edge 42 and the corresponding edge of wall 18 may be connected to cuff 46 designed for direct or indirect attachment to, preferably, a suction mast of a pool cleaner. Thus, as so mounted, the entirety of bag 10 is intended to extend above the suction mast.

Unlike conventional bags, bag 10 includes two top margins 50 and 54 and two bottom rear margins 55 and 56. Top margin 50 may be formed by connecting primary wall 14 with secondary wall 22 at top 38 of bag 10. Top margin 54, by contrast, may be formed by connecting primary wall 18 with secondary wall 26 at top 38. Bottom rear margin 55 is formed by connecting primary wall 14 with secondary wall 22 at bottom 57 of bag 10, and bottom rear margin 56 is created by connecting walls 18 and 26 at bottom 57.

Primary wall 14 and secondary wall 22 additionally may be interconnected to form one rear margin 58 at rear 62 of bag 10. A second rear margin 66, also at rear 62, may be created by connecting primary wall 18 and secondary wall 26. Portions of walls 14 and 22 forming rear margin 58 may be fitted with hook-and-loop fasteners, as may portions of walls 18 and 26 forming second rear margin 66. Accordingly, walls 14 and 22 form a first lobe 70 that may be opened at rear margin 58, whereas walls 18 and 26 form a second lobe 74 that may be opened at second rear margin 66.

FIGS. 2-3 illustrate optional loop 78. If present, loop 78 preferably, but not necessarily, may be connected to top margin 54 (or top margin 50) adjacent seam 82 connecting forward edges 86 and 90 of respective secondary walls 22 and 26. Loop 78 additionally may be comprised of strips 94 and 98 adapted to be fastened together (to form loop 78) and unfastened (so as to be placed around a suction mast or other supporting object). In a preferred version of loop 78, strips 94 and 98 contain complementary hook-and-loop fasteners.

Alternatively, the loop fastener of loop 78 may be connected instead to second rear margin 66 of second lobe 74, with the corresponding hook fastener being connected to rear margin 58 of first lobe 70 (or vice-versa), so that the hook-and-loop fasteners are in shear as lobes 70 and 74 pull apart during debris fill. This configuration allows lobes 70 and 74 to surround or capture a hose or other object and help to maintain the upright and symmetrical position of bag 10. As yet another alternative, the hook-and-loop fasteners may be configured to create a tensile joint as lobes 70 and 74 pull apart during fill. As the lobes 70 and 74 fill, the complementary hook portion and loop portion of the fasteners could detach to provide visual indication of the filled state of lobes 70 and 74.

Divider seam 102 extends upward from bottom 57 of bag 10 but terminates prior to top 38. Seam 102 interconnects all of walls 14, 18, 22, and 26, defining a primary fluid flow path 106 from mouth 34 upward through forward section 110 of bag 10. Seam 102, further, preferably is generally coincident with (although shorter than) seam 82. To the rear of seam 102 are thus two debris-containing pockets 114 and 118. As debris-laden water flows along path 106 through bag 10, debris too large to exit the bag 10 eventually will settle (under gravity) into either of pockets 114 or 118.

The foregoing is provided for purposes of illustrating, explaining, and describing embodiments of the present invention. Modifications and adaptations to these embodiments will be apparent to those skilled in the art and may be made without departing from the scope or spirit of the invention.

Claims

1. A filter bag through which water may flow, comprising: a. means for attachment to a portion of a swimming pool cleaner;b. a divider defining, at least in part, a flow path for debris-laden water entering the filter bag; andc. at least first and second pockets configured to receive debris too large to exit the filter bag when in use.

2. A filter bag according to claim 1 further comprising an entrance for debris-laden water, the entrance being in fluid communication with the attachment means.

3. A filter bag according to claim 2 in which the divider is in the form of a seam extending from adjacent the entrance.

4. A filter bag according to claim 3 in which the first and second pockets are configured so as to be symmetric rearward of the divider seam.

5. A filter bag according to claim 4 in which each of the first and second pockets defines part of a respective first and second lobe, with each lobe configured for opening at a rear margin thereof independent of the other lobe so as to facilitate emptying debris from its respective pocket.

6. A filter bag according to claim 5 further comprising a loop configured for attachment to a supporting object.

7. A water-permeable filter bag comprising: a. first and second primary walls;b. first and second secondary walls;c. a divider seam interconnecting all of the first and second primary walls and the first and second secondary walls; andd. means for attachment to a portion of a swimming pool cleaner; and

8. A water-permeable filter bag according to claim 7 in which each of the first and second primary walls is connected to the attachment means in an area defining an entrance for debris-laden water.

9. A water-permeable filter bag according to claim 8 in which each of the first and second secondary walls has a forward edge, with the forward edges being connected to form a seam.

10. A water-permeable filter bag according to claim 9 further comprising a loop having at least a portion attached to the first secondary wall adjacent the seam.

11. A water-permeable filter bag according to claim 8 in which each of the first and second lobes is configured to be opened independent of the other of the first and second lobes.

12. A water-permeable filter bag according to claim 11 in which each of the first and second lobes defines a rear margin configured to be opened independent of the rear margin of the other of the first and second lobes.

13. A water-permeable filter bag according to claim 7 in which each of the first and second primary walls and the first and second secondary walls comprises at least one sheet of material through which water passes but at least most of any debris entrained in the water does not pass.

14. An automatic swimming pool cleaner comprising: a. a body;b. a filter bag comprising: i. a divider defining, at least in part, a flow path for debris-laden water entering the filter bag; andii. at least first and second pockets configured to receive debris too large to exit the filter bag when in use; andc. means for attaching the filter bag to the body.