A strainer for installation on a drain outlet of a container, such as an ice chest, has a housing including a backing plate and a cover, and a tubular drain engagement member releasably connected to the backing plate. The housing may be installed either by connecting the drain engagement member to t
A strainer for installation on a drain outlet of a container, such as an ice chest, has a housing including a backing plate and a cover, and a tubular drain engagement member releasably connected to the backing plate. The housing may be installed either by connecting the drain engagement member to the backing plate and fitting the tubular drain engagement member into the drain outlet, or by removing the tubular drain engagement member from the backing plate, securing the backing plate over the drain outlet with a nut, and installing the cover onto the backing plate to cover the drain outlet. The housing has a plurality of apertures formed therethrough in communication with the interior of the housing that allow liquid to pass through the drain outlet, while effectively preventing various sizes, shapes and types of debris from entering and clogging the drain outlet.
대표청구항▼
1. A strainer for installation on an existing tubular drain outlet in the wall of a container having an interior and exterior, the existing tubular drain outlet having an externally threaded tubular portion disposed on the interior of the container for threadedly receiving a nut and a central fluid
1. A strainer for installation on an existing tubular drain outlet in the wall of a container having an interior and exterior, the existing tubular drain outlet having an externally threaded tubular portion disposed on the interior of the container for threadedly receiving a nut and a central fluid passageway extending therethrough in communication with the interior of the container and the exterior of the container, the strainer comprising: a generally flat circular backing plate having a central axis, an offset larger hole therethrough disposed in offset relation to said central axis sized to receive the threaded portion of the existing tubular drain outlet therethrough and allow relative rotation therebetween, a plurality of smaller holes therethrough, and snap fit cover engagement means on the circumference thereof for releasably engaging a cover;a generally dome-shaped cover having a dome-shaped end surface and a generally cylindrical peripheral side wall defining an interior, a plurality of holes extending through said dome-shaped end surface, a plurality of circumferentially spaced inwardly recessed slots extending from said dome-shaped surface of said cover and terminating near a bottom of said peripheral side wall in inwardly spaced relation relative thereto defining openings into said interior of said cover at a terminal end of said recessed slots, and snap fit backing plate engagement means thereon for releasably engaging said cover engagement means of said backing plate, said dome-shaped end surface and said generally cylindrical peripheral side wall configuration of said cover preventing debris and flat objects from covering all of said holes, said slots, and said openings of said cover;said snap fit cover engagement means on said backing plate circumference comprising a circumferential bead, and said snap fit backing plate engaging means on said cover comprising an annular channel in an interior surface of said cylindrical peripheral side wall of said cover, or vice versa, configured to removably engage said cover on said backing plate in snap-fit relation; anda nut adapted to be threadedly engaged on the threaded portion of the existing tubular drain outlet;said backing plate adapted to be removably mounted on the existing tubular drain outlet with the threaded portion of the tubular drain outlet extending through said offset larger hole in said backing plate and said nut threadedly engaged thereon; andsaid cover removably engaged in snap fit relation on said backing plate to surround the externally threaded portion of the existing tubular drain outlet, said nut, and the central fluid passageway of the existing tubular drain outlet; whereinsaid smaller holes of said backing plate and said holes, said recessed slots and said openings of said dome-shaped cover allow a liquid in the interior of the container to pass therethrough into said cover interior and through the central fluid passageway of the existing tubular drain outlet to the exterior of the container, while preventing debris and objects from entering said cover interior and clogging or restricting the existing tubular drain outlet; andsaid offset larger hole through said backing plate is offset relative to said central axis a sufficient distance such that said cover and said backing plate are rotatable as a unit eccentrically about the existing tubular drain outlet to engage a circumferential portion of said generally cylindrical peripheral side wall of said cover on a bottom wall of the container to prevent debris and objects residing on the bottom wall of the container from covering said slots and openings disposed on the engaged circumferential portion of said side wall while allowing liquids to pass therethrough into said cover interior and through the central fluid passageway of the existing tubular drain outlet to the exterior of the container. 2. A strainer apparatus for installation on an existing tubular drain outlet in the wall of a container having an interior and exterior, the existing tubular drain outlet having an externally threaded tubular portion disposed on the interior of the container for threadedly receiving a nut and a central fluid passageway extending therethrough in communication with the interior of the container and the exterior of the container, comprising: a generally flat circular backing plate having a central axis, a plurality of smaller holes therethrough, and snap fit cover engagement means on the circumference thereof for releasably engaging a cover member;offset mounting means on said backing plate disposed in offset relation to said central axis for mounting said backing plate on the existing tubular drain outlet such that said backing plate central axis is disposed in offset relation to the tubular drain outlet;a generally dome-shaped cover having a dome-shaped end surface and a generally cylindrical peripheral side wall defining an interior, a plurality of holes extending through said dome-shaped end surface, a plurality of circumferentially spaced inwardly recessed slots extending from said dome-shaped surface of said cover and terminating near a bottom of said peripheral side wall in inwardly spaced relation relative thereto defining openings into said interior of said cover at a terminal end of said recessed slots, and snap fit backing plate engagement means thereon for releasably engaging said snap fit cover engagement means of said backing plate, said dome-shaped end surface and said generally cylindrical peripheral side wall configuration of said cover preventing debris and flat objects from covering all of said holes, said slots, and said openings of said cover;said snap fit cover engagement means on said backing plate circumference comprising a circumferential bead, and said snap fit backing plate engaging means on said cover comprising an annular channel in an interior surface of said cylindrical peripheral side wall of said cover, or vice versa, configured to removably engage said cover on said backing plate in snap fit relation such that said cover is removably engaged in snap-fit relation on said backing plate; whereinsaid smaller holes of said backing plate and said holes, said recessed slots and said openings of said dome-shaped cover allow a liquid in the interior of the container to pass therethrough into said cover interior and through the central fluid passageway of the existing tubular drain outlet to the exterior of the container, while preventing debris and objects from entering said cover interior and clogging or restricting the existing tubular drain outlet; andsaid offset mounting means on said backing plate is offset relative to said central axis a sufficient distance such that said cover and said backing plate are rotatable as a unit eccentrically about the existing tubular drain outlet to engage a circumferential portion of said generally cylindrical peripheral side wall of said cover on a bottom wall of the container to prevent debris and objects residing on the bottom wall of the container from covering said slots and openings disposed on the engaged circumferential portion of said side wall while allowing liquids to pass therethrough into said cover interior and through the central fluid passageway of the existing tubular drain outlet to the exterior of the container. 3. The strainer apparatus according to claim 2, wherein said offset mounting means on said backing plate comprises an offset larger hole therethrough disposed in offset relation to said central axis sized to receive the threaded portion of the existing tubular drain outlet therethrough and allow relative rotation therebetween;a nut adapted to be threadedly engaged on the threaded portion of the existing tubular drain outlet;said backing plate is removably mounted on the existing tubular drain outlet with the threaded portion of the tubular drain outlet extending through said offset larger hole in said backing plate and said nut threadedly engaged thereon; andsaid cover removably engaged in snap-fit relation on said backing plate to surround the externally threaded portion of the existing tubular drain outlet, said nut, and the central fluid passageway of the existing tubular drain outlet. 4. A method for preventing debris and objects from entering and clogging or restricting a tubular drain outlet in the wall of a container when draining liquid contents from the container, the container having an interior and exterior, the tubular drain outlet having an externally threaded tubular portion disposed on the interior of the container and a central fluid passageway extending therethrough in communication with the interior of the container and the exterior of the container, the method comprising the steps of: providing a generally flat circular backing plate having a central axis, snap fit cover engagement means on the circumference thereof, a plurality of smaller holes therethrough, and offset mounting means on said backing plate disposed in offset relation to said central axis for mounting said backing plate on the existing tubular drain outlet;providing a generally dome-shaped cover having a dome-shaped end surface and a generally cylindrical peripheral side wall defining an interior, a plurality of holes extending through said dome-shaped end surface, a plurality of circumferentially spaced inwardly recessed slots extending from said dome-shaped surface of said cover and terminating near a bottom of said peripheral side wall in inwardly spaced relation relative thereto defining openings into said interior of said cover at a terminal end of said recessed slots, and snap fit backing plate engagement means thereon for releasably engaging said snap fit cover engagement means of said backing plate;mounting said backing plate in the interior of the container adjacent to the container wall such that said backing plate central axis is disposed in offset relation to the tubular drain outlet;engaging said cover on said backing plate in snap fit relation such that said cover is removably engaged in snap-fit relation on said backing plate; androtating said cover and said backing plate as a unit eccentrically about the tubular drain outlet to engage a circumferential portion of said generally cylindrical peripheral side wall of said cover on a bottom wall of the container; whereinsaid dome-shaped end surface and said generally cylindrical peripheral side wall configuration of said cover prevent debris and flat objects from covering all of said holes, said slots, and said openings of said cover;said smaller holes of said backing plate and said holes, said recessed slots and said openings of said dome-shaped cover allow a liquid in the interior of the container to pass therethrough into said cover interior and through the central fluid passageway of the existing tubular drain outlet to the exterior of the container, while preventing debris and objects from entering said cover interior and clogging or restricting the existing tubular drain outlet; andsaid circumferential portion of said generally cylindrical peripheral side wall of said cover engaged on the bottom wall of the container prevent debris and objects residing on the bottom wall of the container from covering said slots and openings disposed on the engaged circumferential portion of said side wall while allowing liquids to pass therethrough into said cover interior and through the central fluid passageway of the existing tubular drain outlet to the exterior of the container. 5. The method according to claim 4, wherein said offset mounting means on said backing plate comprises an offset larger hole therethrough disposed in offset relation to said central axis sized to receive the threaded portion of the existing tubular drain outlet therethrough and allow relative rotation therebetween;said step of mounting said backing plate in the interior of the container adjacent to the container wall comprises placing said offset larger hole on the tubular drain outlet such that the threaded portion of the tubular drain outlet extends through said offset larger hole in said backing plate; andthreadedly engaging a nut on the threaded portion of the tubular drain outlet; and thereafterengaging said cover on said backing plate in snap fit relation such that said cover is removably engaged in snap-fit relation on said backing plate to surround the externally threaded portion of the tubular drain outlet, said nut, and the central fluid passageway of the existing tubular drain outlet.
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DelVecchio Evo (2 Worcester St. Clinton MA 01510), Quick disconnect bag filter.
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