Bathtub Liner Overflow Gasket
An overflow gasket for a bathtub and a bathtub liner is disclosed. The bathtub and the bathtub liner are each of the type having an overflow drain in liquid communication with a substantially vertical overflow drain pipe. The gasket of the invention comprises a generally annular, hollow tube defined by a wall. The hollow tube further includes a first end and a second end which each terminate in a circular opening, the first end including a radially-extending circular lip. A longitudinal axis of the tube forms a downward-oriented arc. A circular bracket is included that has a front side, a rear side, and at least one peripheral edge. The rear side is fixed against and substantially overlaps a front side of the lip of the first end of the tube. A circular aperture is formed therein and is generally coaxially aligned with the longitudinal axis of the first end of the tube. A cross-beam is formed across a diameter of the circular aperture and includes a threaded screw aperture for accepting a mounting screw of a cover plate. With the tube inserted through the apertures of the bathtub liner and the bathtub, a rear side of the circular lip may be fixed against the bathtub liner to form a water-tight seal. Mechanical fasteners secure the bracket and hollow tube to the liner and tub. As such, water entering the first end of the tube is conveyed by gravity directly into the overflow drain pipe.
Not Applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENTNot Applicable.
FIELD OF THE INVENTIONThis invention relates to bathtubs, and more particularly to an improved gasket for a bathtub liner.
DISCUSSION OF RELATED ARTBathtub liners are frequently used in bathroom remodeling projects to cover worn or visibly deteriorating or damaged bathtub surfaces. Typically such a liner is a plastic, one-piece part that is placed inside the tub. As such, both the primary drain and the overflow drain must be connected through the liner and tub in such a way that water will not become trapped between the liner and the tub.
U.S. Pat. No. 6,272,699 to Peterson on Aug. 14, 2001, teaches a device for connecting the overflow drain to a substantially vertical overflow drain pipe in a water-tight fashion. This type of device includes a hollow rubber gasket having a throat member which extends from the liner, through a tub wall, and into the drain pipe.
Such a device, however, has several drawbacks. Namely, when installing such a device with a smaller than normal diameter overflow pipe, or an overflow pipe located within short proximity of the side of the bathtub, the drain end of such a device may become pressed-up against a back wall of the overflow pipe and effectively seal-off the overflow drain. Further, in some installations where the drain pipe is located relatively far from the side of the tub, the person installing such a device finds it difficult to know if the far end of the device is far enough into the drain pipe to ensure any water draining therethrough will make it to the drain pipe. Thus, such a device provides little feedback to the installer regarding the proper installation thereof.
Therefore, there is a need for an overflow gasket that, when not installed correctly, provides clear feedback to the installer that a different size gasket may be required. Such a needed device would be easy to install and relatively inexpensive. The present invention accomplishes these objectives.
SUMMARY OF THE INVENTIONThe present device is an overflow gasket for a bathtub and a bathtub liner. The bathtub and the bathtub liner are each of the type having an overflow drain in liquid communication with a substantially vertical overflow drain pipe. The gasket of the invention comprises a generally annular, hollow tube defined by a wall. The hollow tube further includes a first end and a second end which each terminate in a circular opening, the first end including a radially-extending circular lip. A longitudinal axis of the tube forms a downward-oriented arc. Preferably the lip further includes at least two mounting apertures therein each for fixing the gasket to the bathtub liner with a mechanical fastener.
A circular bracket is included that has a front side, a rear side, and at least one peripheral edge. The rear side is fixed against and substantially overlaps a front side of the lip of the first end of the tube. A circular aperture is formed therein and is generally coaxially aligned with the longitudinal axis of the first end of the tube. A cross-beam is formed across a diameter of the circular aperture and includes a threaded screw aperture for accepting a mounting screw of a cover plate.
In use, with the tube inserted through the aperture of the bathtub liner and the aperture of the bathtub, a rear side of the circular lip may be fixed against the bathtub liner to form a water-tight seal. Mechanical fasteners secure the bracket and hollow tube to the liner and tub. As such, water entering the first end of the tube is conveyed by gravity away from an interface between the bathtub and the bathtub liner and directed into the overflow drain pipe.
The present invention is an overflow gasket that, when not installed correctly, provides clear feedback to the installer that a different size gasket may be required, since when installed correctly the lip lies flat against the surface of the liner and the second end of the hollow tube projects down into the overflow pipe without making contact therewith. The present device is also easy to install and relatively inexpensive to manufacture. Other features and advantages of the present invention will become apparent from the following more detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the invention.
The present invention is an overflow gasket 10 for a bathtub 20 and a bathtub liner 30. The bathtub 20 and the bathtub liner 30 are each of the type having an overflow drain 25,35, respectively, on a substantially vertical wall 28,38, respectively, thereof. Each overflow drain aperture 25,35 is in liquid communication with a substantially vertical overflow drain pipe 40. Typically in such installations the bathtub liner 30 is set inside the bathtub 20 such that the apertures 25,35 become substantially co-axially aligned (
The gasket 10 of the invention comprises a generally annular, hollow tube 50 defined by a wall 60, preferably made from a PVC material, or the like, having a durometer hardness of between 40 and 80. The hollow tube 50 further includes a first end 52 and a second end 54 (
A circular bracket 140 may be included and is preferably made of chrome or other rust-resistant metal or rigid plastic material. The bracket 140 has a front side 142, a rear side 144, and at least one peripheral edge 145 (
Preferably the lip 80 further includes at least two mounting apertures 200 therein each for fixing the gasket 10 to the bathtub liner 30 with a mechanical fastener 210 (
The hollow tube 50 may further include at least one air vent hole 220 in a top portion 56 thereof (
In use, with the tube 50 inserted through the aperture 35 of the bathtub liner 30 and the aperture 25 of the bathtub 20, a rear side 84 of the circular lip may be fixed against the bathtub liner 30 to form the water-tight seal 110. Mechanical fasteners 210 secure the bracket 140 and hollow tube 50 to the liner 30 and tub 20, as illustrated in
While a particular form of the invention has been illustrated and described, it will be apparent that various modifications can be made without departing from the spirit and scope of the invention. Accordingly, it is not intended that the invention be limited, except as by the appended claims.
Claims
1. An overflow gasket for a bathtub and a bathtub liner, each of the type having an overflow drain aperture on a substantially vertical wall thereof for connecting to a substantially vertical overflow drain pipe, the gasket comprising a generally annular, hollow tube defined by a wall, the tube having a first end and a second end, the first end terminating in a generally vertical, circular opening and including a radially-extending circular lip, the second end terminating in a circular opening, a longitudinal axis of the tube forming a downward-oriented arc; whereby with the tube inserted through the aperture of the bathtub liner and the aperture of the bathtub, a rear side of the circular lip may be fixed against the bathtub liner to form a water-tight seal, water entering the first end of the tube being conveyed by gravity away from an interface between the bathtub and the bathtub liner and directly into the overflow drain pipe.
2. The overflow gasket of claim 1 further including a generally circular bracket having a front side, a rear side, and at least one peripheral edge, the rear side fixed against and substantially overlapping a front side of the lip of the first end of the tube, a circular aperture formed therein and coaxially aligned with the longitudinal axis of the first end of the tube, a cross-beam formed across a diameter of the circular aperture, the cross-beam having a threaded screw aperture for accepting a mounting screw of a cover plate.
3. The overflow gasket of claim 1 wherein the lip further includes at least two mounting apertures therein, each for fixing the gasket to the bathtub liner with a mechanical fastener.
4. The overflow gasket of claim 3 wherein the mechanical fastener is a screw.
5. The overflow gasket of claim 1 wherein a top portion of the tube includes at least one air vent hole.
6. The overflow gasket of claim 1 wherein the lip further includes an indicia on a front side thereof for indicating an upward direction opposite the downward-oriented arc of the tube.
7. The overflow gasket of claim 1 wherein a thickness of the wall of the tube is between 0.020 and 0.040 inches.
8. The overflow gasket of claim 1 wherein a thickness of the lip is between 0.100 and 0.150 inches.
9. The overflow gasket of claim 1 wherein the tube is formed from a PVC material having a durometer hardness of between 40 and 80.
10. The overflow gasket of claim 1 wherein the second end includes a spout in a bottom portion thereof.
11. The overflow gasket of claim 1 wherein a bottom-most portion of the second end is lower than a bottom-most portion of each aperture of the bathtub and the bathtub liner.
Type: Application
Filed: Mar 7, 2007
Publication Date: Sep 11, 2008
Inventor: Timothy Johannes (MC HENRY, IL)
Application Number: 11/683,318
International Classification: E03C 1/244 (20060101);