(1) Field of the Invention
The present invention relates generally to commercial kitchen systems and, more particularly, to an apparatus for draining at least one sink. The apparatus includes a commercial kitchen sink having a drain; a trough below the sink for transporting effluent, the trough positioned such that there is an air gap between it and drain; a plurality of selectively positionable markers on the trough; and removable solids strainers configured to be positioned at a marker to locate the strainer below a drain.
(2) Description of the Prior Art
In order to maintain sanitary conditions, plumbing and health code regulations require device drains to be individually drained with a flow passing through a minimum air space to preclude potential cross-contamination caused by fluids migrating upstream due to a downstream blockage. Traditional air-gap connection methods have commonly used a pipe-and-cup arrangement. Effluent flows through a drain, passes through a mandated air-gap into a cup, and then passes through a pipe to a remote location. This conventional set-up requires an adequate vertical distance to be available. However, in many modern commercial kitchens, devices discharge low to the floor and preclude such a pipe-and-cup design, particularly if other equipment needs to be installed under the sink downstream of the drain.
A particular item of equipment that may need to be installed downstream of the drain is the Big DipperĀ® grease separator sold by Thermaco, Inc. of Asheboro, N.C. Grease separators remove oil and grease from kitchen sink effluent so that the remaining effluent is easier to process and clogging of pipes is reduced, in compliance with many sewage district codes. The oil/grease separators have tanks with quiescent zones to permit the oil and grease to float on top of the water and be susceptible to removal.
When using these and other grease separators, it may be desirable to remove solids from the effluent flow prior to flow into the separator. One method of removing solids includes placing a strainer in the effluent flow below the sink drain. However, to effectively remove solids from the flow, the strainer must be placed such that the effluent stream including the solids passes through the strainer. Therefore, an inexpensive device for eliminating activities such as determining where the strainer should be placed along a trough and monitoring the strainer to determine whether it is indeed aligned with effluent flow from an outlet of a sink drain may increase the operating efficiency of such kitchens. There remains, therefore, a need in the art for an apparatus for draining at least one kitchen sink that provides a trough below the sink for transporting effluent, the trough positioned such that there is an air gap between it and the drain; and a plurality of selectively positionable markers on the trough to guide strainer placement.
The present invention fulfills one or more of these needs by providing an apparatus for draining at least one sink having a downwardly disposed drain ending in a lower end. The apparatus includes a trough upwardly open to effluent flow discharging from the downwardly disposed drain. The trough extends beneath the sink and has a discharge end and an upstream end. Means are provided for positioning the trough to induce the effluent flow to the discharge end of the trough and to allow an air gap between the trough and the lower end of the drain. Selectively positionable markers mark a location of a sink drain above the apparatus to guide the positioning of a removable strainer. This enables the positioning of the strainer at the marker and consequent alignment of the strainer with the effluent flow from the drain to collect solids discharging from the drain into the apparatus.
In an embodiment of the invention, the apparatus includes a removable strainer for positioning in the trough at one of the markers. The apparatus may include a grease separator downstream of the trough. A sink is usually positioned having a downwardly disposed drain ending in a lower end. The strainer may include a handle. An indicator is preferably included to indicate a portion of the trough between two of the markers for positioning the strainer, to enable alignment of the strainer with the flow from the drain. The trough may be substantially U-shaped and include a series or apertures on a top flange for selectively positioning the markers. The trough has a depth, and the strainer preferably has a lesser depth to enable effluent to flow from upstream of the strainer, under the strainer, to downstream of the strainer. Each of the markers may include a pair of ears for guiding the positioning of the strainer, and a pair of lip portions, each having an aperture for coupling the marker to the trough.
In another aspect, the invention provides a method of installing an apparatus for removing solids from an effluent flow from a kitchen sink. The method includes fabricating a trough for placement below a drain hole of a kitchen sink, and positioning the trough below the drain hole. Further the method includes positioning the trough below the drain hole of the kitchen sink, selectively positioning drain hole markers along the trough; and inserting a strainer into the trough at one of the markers.
In yet another aspect the invention provides a method of removing solids from an effluent flow from a kitchen sink including discharging effluent flow containing solids from a drain hole of a sink. The method further includes collecting the solids from the effluent flow in a strainer positioned along a trough at a marker, removing the strainer from the trough, disposing of solids in the strainer; and replacing the strainer in the trough at the marker.
These and other aspects of the present invention will become apparent to those skilled in the art after a reading of the following description of the preferred embodiment when considered with the drawings.
The illustrations and description are for the purpose of describing an embodiment of the invention and do not limit the invention to any particular embodiment. Those of ordinary skill will recognize that the invention defined by the claims is capable of various and numerous embodiments.
The trough 20 includes a means 30 for positioning the trough 20 to induce the effluent flow to the discharge end 24 of the trough 20 and to provide an air gap 34 between the trough 20 and the lower end 77 of the drain 74. In one embodiment of the invention, the means 30 for positioning the trough 20 includes one or more standards 38 resting on a floor 31 or other surface below the trough 20 extending between the floor 31 surface and the trough 20 for supporting the trough 20. Fittings 35 on the bottom of the trough have holes with threads, and at least upper portions of the standards are threaded to permit height adjustments. Similar threaded adjustments can also be provided for the connection of the bottom of the standards to feet 33. The means for positioning the trough may be a support bracket made of a conventional hanger strap material. Other floor or wall-mounted straps can be the means for positioning or a component of the means for positioning the trough. Various combinations of nuts, bolts, screws, rods, straps, brackets, clamps, hangers, blocks, supports, feet, and other similar structures can be used to position the trough. In addition, a surface, such as the floor of a kitchen may provide the means. The apparatus may include a grease separator 60 downstream of the trough 20.
The apparatus 10 may comprise written instructions 80, which may be located on a face 29 of a marker 40 and indicate a portion of the trough 20 where the strainer 50 should be placed to enable alignment of the strainer 50 with the flow from the drain 74. In an embodiment of the invention, each of the markers 40 includes a pair of lip portions 27 having at least one aperture 28 for coupling the marker to a hole 24 in the flange 47 of the trough. Each of the markers 40 has a pair of upwardly extending ears 44 spaced apart slightly more than the length of the strainer 50 so as to together define a position for the strainer 50, and to prevent longitudinal sliding of the strainer 50.
In operation of an embodiment of the invention, a method of removing solids from an effluent flow from a kitchen sink having a drain hole includes positioning a trough below the drain hole of the kitchen sink. The drain hole markers may be positioned along the trough to indicate the location of the drain hole. A strainer can be inserted into the trough at one of the markers. Thus, after an effluent flow containing solids is discharged for the sink through the drain hole, the strainer, and the trough, the strainer collects the solids from the effluent flow. The strainer can be removed from its position below the drain hole and its contents transferred to a solid waste collection container. The strainer can be replaced in the trough at the marker indicating the position of the drain hole, so that the process can continue.
Certain modifications and improvements will occur to those skilled in the art upon a reading of the foregoing description. Not every such modification and improvement is described herein, but is properly within the scope of the following claims.
Number | Name | Date | Kind |
---|---|---|---|
220064 | Evans | Sep 1879 | A |
425553 | Smith | Apr 1890 | A |
480692 | Clifford et al. | Aug 1892 | A |
692706 | Poate | Feb 1902 | A |
1183568 | Keevan | May 1916 | A |
1798441 | Weiss | Mar 1931 | A |
1817376 | Izquierdo | Aug 1931 | A |
1932097 | Biggs | Oct 1933 | A |
2250974 | Stoddard | Jul 1941 | A |
2814809 | Boyle | Dec 1957 | A |
2878826 | Dolenga | Mar 1959 | A |
2894631 | Levit et al. | Jul 1959 | A |
3155106 | Baron | Nov 1964 | A |
3455324 | Bieri et al. | Jul 1969 | A |
3495280 | Galbiati | Feb 1970 | A |
3590423 | Messer | Jul 1971 | A |
3742093 | Skidmore | Jun 1973 | A |
3872017 | Bishop | Mar 1975 | A |
3957637 | Morey | May 1976 | A |
4045351 | Peterson | Aug 1977 | A |
4114660 | Arruda | Sep 1978 | A |
4235726 | Skimo | Nov 1980 | A |
4268396 | Lowe | May 1981 | A |
4321857 | Best | Mar 1982 | A |
4369532 | Houchins et al. | Jan 1983 | A |
4480656 | Johnson | Nov 1984 | A |
4734262 | Bagshawe | Mar 1988 | A |
5016667 | Tolf | May 1991 | A |
5069781 | Wilkes | Dec 1991 | A |
5091095 | Fries et al. | Feb 1992 | A |
5098564 | Miller et al. | Mar 1992 | A |
5133881 | Miller et al. | Jul 1992 | A |
5159958 | Sand | Nov 1992 | A |
5178754 | Batten et al. | Jan 1993 | A |
5271853 | Batten | Dec 1993 | A |
5305778 | Traylor | Apr 1994 | A |
5360555 | Batten | Nov 1994 | A |
5397464 | Hannon | Mar 1995 | A |
5405538 | Batten | Apr 1995 | A |
5452739 | Mustee et al. | Sep 1995 | A |
5454396 | Hochstrasser | Oct 1995 | A |
5482621 | Nurse | Jan 1996 | A |
5486287 | Murphy et al. | Jan 1996 | A |
5492619 | Batten | Feb 1996 | A |
5525042 | Batten | Jun 1996 | A |
5543064 | Batten | Aug 1996 | A |
5562047 | Forney et al. | Oct 1996 | A |
5620606 | McBrayer, Jr. et al. | Apr 1997 | A |
5678592 | Boticki et al. | Oct 1997 | A |
5775869 | Bishop | Jul 1998 | A |
5934309 | Batten | Aug 1999 | A |
5948279 | Change et al. | Sep 1999 | A |
5951878 | Astrom | Sep 1999 | A |
5983908 | Bradley | Nov 1999 | A |
6003169 | Davis, Jr. | Dec 1999 | A |
6019894 | Batten | Feb 2000 | A |
6059963 | Horakova et al. | May 2000 | A |
6102073 | Williams | Aug 2000 | A |
6116266 | Dickison et al. | Sep 2000 | A |
6145136 | Parisi et al. | Nov 2000 | A |
6173856 | Bierce et al. | Jan 2001 | B1 |
6202689 | Williams | Mar 2001 | B1 |
6213002 | Batten | Apr 2001 | B1 |
6238572 | Batten | May 2001 | B1 |
6261462 | Batten | Jul 2001 | B1 |
6290143 | Vincent et al. | Sep 2001 | B1 |
6328901 | Batten | Dec 2001 | B1 |
6368501 | Batten | Apr 2002 | B1 |
6413435 | Kyles et al. | Jul 2002 | B1 |
6435078 | Batten et al. | Aug 2002 | B1 |
6453487 | Babington | Sep 2002 | B1 |
6453488 | Shamroth | Sep 2002 | B1 |
6478552 | Batten et al. | Nov 2002 | B1 |
6491830 | Batten et al. | Dec 2002 | B1 |
6517715 | Batten et al. | Feb 2003 | B1 |
6576140 | Batten | Jun 2003 | B1 |
6582205 | Batten et al. | Jun 2003 | B2 |
6601248 | Sage-Passant | Aug 2003 | B1 |
6609259 | Cantrell | Aug 2003 | B2 |
6629652 | Batten | Oct 2003 | B2 |
6941703 | MacLean et al. | Sep 2005 | B2 |
6994221 | Tse | Feb 2006 | B2 |
7060179 | Batten et al. | Jun 2006 | B1 |
7128834 | Davenport | Oct 2006 | B2 |
7134152 | Batten et al. | Nov 2006 | B1 |
7225480 | Mascheroni | Jun 2007 | B2 |
7351385 | Batten et al. | Apr 2008 | B1 |
20020095720 | Shamroth | Jul 2002 | A1 |
20030033670 | Cantrell | Feb 2003 | A1 |
Number | Date | Country |
---|---|---|
555672 | Aug 1993 | EP |
2216821 | Oct 1989 | GB |
678438 | Sep 1991 | SE |