US20040111797A1 - Overflow assembly for bathtubs and the like - Google Patents

Overflow assembly for bathtubs and the like Download PDF

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Publication number
US20040111797A1
US20040111797A1 US10/738,765 US73876503A US2004111797A1 US 20040111797 A1 US20040111797 A1 US 20040111797A1 US 73876503 A US73876503 A US 73876503A US 2004111797 A1 US2004111797 A1 US 2004111797A1
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United States
Prior art keywords
overflow
nut
bathtub
port
overflow port
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/738,765
Inventor
William Ball
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WCM Industries Inc
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WCM Industries Inc
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Filing date
Publication date
Priority to US10/222,062 priority Critical patent/US6637050B1/en
Priority to US10/229,533 priority patent/US6675406B2/en
Priority to US10/674,862 priority patent/US20040068793A1/en
Application filed by WCM Industries Inc filed Critical WCM Industries Inc
Priority to US10/738,765 priority patent/US20040111797A1/en
Assigned to WCM INDUSTRIES, INC. reassignment WCM INDUSTRIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BALL, WILLIAM T.
Publication of US20040111797A1 publication Critical patent/US20040111797A1/en
Abandoned legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03CDOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/24Overflow devices for basins or baths

Abstract

An overflow system in the bathtub has an overflow port and has a drain pipe in connection with the overflow port. A threaded flange has a stub shoulder on one end which is fitted into a circular sleeve on the overflow port. The threaded flange has exterior threads on its outer surface and a thin diaphragm secured to the end thereof opposite to the stub shoulder. A large sealing washer embraces the outside of the circular flange on the overflow port and extends partially over the threads of the threaded flange. A large internally threaded nut is threadably mounted on the outer end of the threaded flange and compresses the sealing washer against a vertical flange on the port to seal the connection between the threaded flange and the port. A decorative cap is frictionally snapped into engagement with protrusions on the outer surface of the nut. The cap can be removed when needed to permit the plumber to gain access to the diaphragm to cut it open for fluid flow after the system has been tested for leaks, or put in place after the cut takes place.

Description

    CROSS REFERENCE TO RELATED APPLICATIONS
  • This application is a continuation of U.S. patent application Ser. No. 10/674,862 filed Sep. 30, 2003 which is a continuation of U.S. patent application Ser. No. 10/222,062, now U.S. Pat. No. 6,637,050, and U.S. patent application Ser. No. 10/229,533 filed Aug. 28, 2002.[0001]
  • BACKGROUND OF THE INVENTION
  • In new building construction, the plumbers prefer not to put the finished closure valves in the bottom of tubs, or the finished decorative plate over the overflow outlet at the end, of the tub until the project is finished because these elements will be often damaged as the construction project is brought to a close. Further, the piping for both of the outlets needs to be checked for leaks before the inspection process is completed. The test involves running water down the vent for the drain until it reaches a level above the tub and the tester then determines whether any of the piping leaks. Thus, when the testing operation arrives, a plug is put in the bottom drain of the tub and some sort of seal plate is placed at the end of the tub on the overflow outlet. [0002]
  • Existing overflow plates have a center opening therein. There are either two or four small screw holes in the plate adjacent the center opening wherein two of the holes are used to hold the plate to the plumbing fixture. In some cases there is a fitting so that the screw hole is located directly in the middle of the access hole. In that case, that hole is in the way when the testing procedure is implemented. In any event, the testing procedure usually involves stuffing a balloon through the large center opening into the pipe in the wall and the pipe is sealed when the balloon is inflated. Further, existing seal plates normally have to be removed when the decorative plate is put on. Two screws which use the screw openings of the plate typically hold the decorative plate in position. [0003]
  • A more recent version is shown in the U.S. Pat. No. 5,890,241 in which an overflow system for a bathtub has an overflow port and has a drain pipe in connection with the overflow port. A flexible diaphragm is imposed over overflow drain pipe secured to and engages the inner face of the sleeve. Screws extend through the plate which has a center opening. A screw extends through the plate to hold the cap in place. The cap has a conventional side rim extending around the plate and diaphragm. A cut-out portion of the cap provides for water flow. The diaphragm seals the overflow pipe when the system is being tested for leaks with pressurized fluid. Following the tests, when the fluid is removed, the diaphragm is cut or slashed to open the overflow port to provide fluid flow. While this device serves the intended function, it is expensive to make and more cumbersome to assemble. [0004]
  • It is, therefore, a principal object of the invention to provide a method and a means for an overflow assembly for bathtubs and the like which will safeguard the overflow system during construction; prepare the system for testing; and facilitate the final installation of the bathtub hardware. [0005]
  • A further object of the invention is to facilitate the testing procedure of the overflow system before the final installation has taken place, and to permit the assembly of parts without the use of screws, screw holes, and the like. [0006]
  • It is further an object of this invention to provide an overflow fitting which will safeguard the overflow system during construction. [0007]
  • A further object of the invention is to provide an overflow fitting which will prepare the overflow system for testing. [0008]
  • A still further object of the invention is to provide an overflow fitting which allows a user to install the overflow fitting without using solvent cement. [0009]
  • These and other objects will be apparent to those skilled in the art. [0010]
  • SUMMARY OF THE INVENTION
  • An overflow system in the bathtub has an overflow port and has a drain pipe in connection with the overflow port. A threaded flange has a stub shoulder on one end which is fitted into a circular sleeve on the overflow port. The threaded flange has exterior threads on its outer surface and a thin diaphragm secured to the end thereof opposite to the stub shoulder. A large sealing washer embraces the outside of the circular flange on the overflow port and extends partially over the threads of the threaded flange. A large internally threaded nut is threadably mounted on the outer end of the threaded flange and compresses the sealing washer against a vertical flange on the port to seal the connection between the threaded flange and the port. A decorative cap is frictionally snapped into engagement with protrusions on the outer surfaces of the nut. The cap can be removed if needed to permit the plumber to gain access to the diaphragm to cut it open for fluid flow after the system has been tested for leaks, or put in place after the cut takes place. [0011]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a partial perspective view of a conventional bathtub environment utilizing the invention of this application; [0012]
  • FIG. 2 is a large scale section view taken on line [0013] 2-2 of FIG. 1;
  • FIG. 3 is a perspective exploded view of the cap, nut, washer, membrane, and upper pipe; [0014]
  • FIG. 4 is a cross sectional view of the assembled components of FIG. 3; [0015]
  • FIG. 5 is a perspective view showing the piercing of the Membrane; [0016]
  • FIG. 6 is a sectional side view of a conventional bathtub environment utilizing the device of this invention; [0017]
  • FIG. 7 is a side view of the device of this invention; [0018]
  • FIG. 8 is a front view of the device of this invention; [0019]
  • FIG. 9 is an exploded perspective view of the device of this invention; and [0020]
  • FIG. 10 is a perspective view of the installation of the device of this invention.[0021]
  • DESCRIPTION OF THE PREFERRED EMBODIMENT
  • With reference of FIGS. 1 and 2, a conventional bathroom structure [0022] 10 has a floor 12, and a hollow wall 14 with a wall opening 16 therein. A conventional bathtub (“tub”) 18 has a base 20 which rests upon floor 12. Sidewalls 22 extend upwardly from base 20 as does an end wall 24. The end walls 24 extend upwardly from the bottom 26, perpendicular to the side walls 22, and have an outer surface. A bottom 26 dwells in spaced relation to the floor 12.
  • A conventional drain port [0023] 28 is located in bottom 26. A conventional overflow port 30 is located in the end wall 24 1 (FIG. 2). A vertical drain pipe 32 extends downwardly from drain port 28, and overflow drain pipe 34 extends downwardly from overflow port 30. A horizontal pipe 36 connects pipes 32 and 34. A drain pipe 38 extends downwardly from the junction between pipes 34 and 36.
  • A conventional vertical vent pipe [0024] 40 is located within the hollow wall 14. Pipe 42 interconnects vent pipe 40 and the upper end of overflow drain pipe 34 (FIG. 2). Conventional water pipes 44 extend through hollow wall 14 and are connected to valve 46 which is interconnected to conventional control member 48 and faucet 50.
  • FIG. 3 shows a radial flange [0025] 52 formed on the upper end of pipe 34 and has a center opening or port 54. Water can flow through center opening 54 into drain pipe 34. Sleeve 56 extends longitudinally outwardly from the perimeter of opening 54 forming a surface on its inner diameter.
  • A hollow cylindrical fitting [0026] 58 has a hollow cylindrical shoulder 60 on its inner end, a threaded outer surface 62, and a thin plastic diaphragm 64 sealed across its outer end. The shoulder 60 has an outer diameter that can be manually frictionally inserted within the surface of the inner diameter of sleeve 56 creating sufficient frictional force to resist opposing force applied by fluid pressure.
  • A pliable sealing ring or washer [0027] 66 has a center bore 67 which can frictionally receive the exterior surface of fitting 58 to engage the radial flange 52 of port 54 to seal the connection between sleeve 56 and shoulder 60. The longitudinal thickness of washer 66 is less than the longitudinal thickness of fitting 58 so that some of the threaded surface 62 adjacent the diaphragm 64 is exposed when the washer 66 is mounted on fitting 58 in the position described above. A nut element 68 has a threaded center bore 70 which is compatible with the threaded outer surface 62 of fitting 58. When nut element 68 is tightened on threaded portion 62, the washer 66 is in tight engagement with flange 52 of port 54. The outer periphery 72 of nut element 68 has a series of radially extending lugs 74 which frictionally detachably engage the inner surface of flange 76 of cap 78. Nut element can be tightened on washer 66 either as positioned within cap 78, or before cap 78 and the nut element 68 are engaged. A notch 80 is located in flange 76 and is adapted to receive overflow water from tub 18 when required to do so. Notch 80 is normally in a 6 o'clock position on flange 76.
  • It is important to note that diaphragm [0028] 64 is of plastic material, as is fitting 58, and is preferably integrally formed with fitting 58 wherein diaphragm 64 and fitting 58 are one unitary component. Diaphragm 64 is a thin circular plate disk that is joined to fitting 58 by its outer peripheral edge engaging the outer peripheral edge of the fitting 58. If the two components are not molded as one unitary structure, the diaphragm 64 could be connected by fusing, hermetically sealed, or by otherwise rigidly attached” by its outer peripheral edge to the rearward outer peripheral edges of the fitting by a suitable adhesive. No screws or the like are either required or desired.
  • A second embodiment of the invention can be seen in FIG. 6. In FIG. 6 a one-piece overflow fitting [0029] 60A is seen attached to second vertical drain pipe 34A, and a portion of the overflow fitting 60A passes through overflow port 30.
  • With reference to FIGS. [0030] 7-9, shows the bathtub when the overflow fitting 60A is used. Overflow fitting 60A has an overflow pipe 62A with an inverted L-shape. The overflow pipe 62A has an elbow portion 65A which defines an upper end portion 66A and a lower end portion 67A. It will be understood that the overflow pipe 62A may be made of copper, plastic, or any other suitable material.
  • The upper end portion [0031] 66A has threads 68A on its outer surface and also has an outer end 70A. The outer end 70A defines an inlet 71A to the upper end portion 66A of the overflow pipe 62A. The inlet 71A is adapted to fit through the bathtub overflow port 30.
  • The overflow fitting [0032] 60A also has a lip 74A extending radially outwardly from an outer surface of the overflow pipe 62A between the elbow portion 65A and the upper end portion 66A. The lip 74A is spaced from the inlet 71A to engage an outer surface of the bathtub end wall 24 around the bathtub overflow port 30, thereby allowing only the upper end portion 66A to pass through the overflow port 30.
  • A thin diaphragm [0033] 80A is sealed to the outer end 70A of the end portion 66A. The diaphragm 80A is a circular membrane and has a diameter that is not less than the diameter of the outer end 70A of the overflow pipe 62A. In one embodiment, the diaphragm 80A is integral with the outer end 70A and is held to the outer end 70A only through having been integrally formed therewith. The diaphragm 80A may be hermetically sealed to the outer end 70A. The diaphragm 80A may be composed of plastic material, flexible rubber, or the like. The diaphragm 80A is composed of a material that is easily punctured or easily removable.
  • The overflow pipe fitting [0034] 60 further includes, a nut element 90A having threads compatible with the threads 68A on the upper end portion 66A of the overflow pipe 62A. The nut element 90A removably secures the overflow pipe 62A to the bathtub 20 by compressing the end wall 24 between the nut element 90A and the lip 74A. The nut element 90A may be a slip nut.
  • As shown in FIG. 9, the nut element [0035] 90A has a series of radially extending lugs 92A along the nut 90A outer periphery. These lugs 92A detachably engage the inner surface of a cap 96A. The cap 96A serves to cover the overflow pipe fitting 60A hardware.
  • During installation of the overflow pipe fitting [0036] 60A, a washer 94A may be placed between the upper end portion 66A of the overflow pipe 62A and the nut element 90A. The washer 94A seals the overflow pipe fitting 60A to the tub 20.
  • In operation, the drainage system comprising the ports [0037] 28 and 30, and pipes 34, 36, and 38 are installed as shown in FIG. 3. Vent pipe 40 and connecting pipe 42 are also installed.
  • In the conventional testing procedure, the port [0038] 28 is plugged in any convenient manner. For fitting 58 with diaphragm 64 is installed into drain pipe 34 as described above so there is no fluid access to the upper end of pipe 34 either inwardly or outwardly through overflow port 30. The vent pipe is charged with water at some elevation above pipe 42 so that the building inspectors can check to see if there are any leaks in the system. Having determined that there are no leaks, the water is purged from the system. The plumber can then approach overflow port 30, (because cap 78 is not yet installed) and by using knife 86 or the like, cuts can be made in diaphragm 64 leaving a cutout portion 84 as shown in FIG. 5.
  • Overflow pipe fitting [0039] 60A in operation is attached to the second vertical drain pipe 34A already plugged by the diaphragm 80A as described above, so there is no fluid access to the upper end of pipe 34A either inwardly or outwardly out of the overflow port 30. The vertical vent pipe 40 is charged with water at some elevation above pipe 42 so that it can be determined if there are any leaks in the system.
  • With reference to FIG. 10, having determined that there are no leaks, the water is purged from the system. The plumber can then approach overflow port [0040] 30, and by using a cutting device 10A, such as a knife of any other sharp object, cuts 102A can be made in the diaphragm 80A. This can be quickly and easily done without disassembling any of the structure of overflow pipe fitting 60A. Any valve linkage elements required may be installed through cuts 102A, and any cap or cover for the overflow port 30 may be placed over the overflow pipe 62A end portion 66A.
  • It is therefore seen that this invention eliminates any need to seal shut an overflow pipe [0041] 32, 62A even after the pipe 62A has been attached to the second vertical drain pipe 34A. The invention also eliminates any need to remove sealing components from the overflow port 30 after the testing procedure has taken place. In addition, the invention allows a user to install an overflow fitting 60A without using solvent cement. This invention also facilitates the testing procedure and reduces the time needed to seal the overflow port 30, and then to open the diaphragm 64, 80A for possible fluid flow.
  • It is therefore seen this invention will achieve at least all of its stated objectives. [0042]

Claims (3)

I claim:
1. An assembly for a bathtub which has a bottom and adjacent side and end walls, and an overflow port in an end wall, comprising:
a one-piece overflow fitting comprising:
an overflow pipe with an inverted L-shape having an elbow portion defining an upper end portion and a lower end portion, the upper end portion having an outer end defining an inlet being adapted to fit through the bathtub overflow port;
threads on an outer surface of the upper end portion and surrounding the inlet and normally extending through the bathtub overflow port;
a lip extending radially outwardly from an outer surface of the overflow pipe between the elbow portion and the upper end portion and being spaced from the inlet to engage an outer surface of the bathtub end wall around the bathtub overflow port; and
a sealing element sealing the outer end of the upper end portion to close the inlet to fluid flow;
a nut element compatible with the threads wherein the nut element has a threaded portion for threadibly mounting the nut to the upper end portion to clamp the overflow fitting to the end of the bathtub between the lip and the nut element, and at least one lug extending radially from the nut; and
a cap detachably encased to the lug and covering the nut.
2. An assembly for a bathtub which has a bottom and adjacent side and end walls, and an overflow port in an end wall, and an overflow fitting comprising:
an overflow pipe with an inverted L-shape having an elbow portion defining an upper end portion and a lower end portion, the upper end portion having an outer end defining an inlet being adapted to fit through the bathtub overflow port;
threads on an outer surface of the upper end portion and surrounding the inlet and normally extending through the bathtub overflow port;
a lip extending radially outwardly from an outer surface of the overflow pipe between the elbow portion and the upper end portion and being spaced from the inlet to engage an outer surface of the bathtub end wall around the bathtub overflow port; and
a nut element compatible with the threads on the upper end portion wherein the nut element has a threaded portion for threadably mounting the nut to the upper end portion to clamp the overflow fitting to the end of the bathtub between the lip and the nut element, and at least one lug extending radially from the nut; and
a cap detachably encasing the lug and covering the nut.
3. The assembly of claim 1, wherein the overflow fitting is of one-piece construction.
US10/738,765 2000-06-13 2003-12-17 Overflow assembly for bathtubs and the like Abandoned US20040111797A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US10/222,062 US6637050B1 (en) 2002-08-16 2002-08-16 Overflow assembly for bathtubs and the like
US10/229,533 US6675406B2 (en) 2000-06-13 2002-08-28 Overflow assembly for bathtubs and the like
US10/674,862 US20040068793A1 (en) 2002-08-16 2003-09-30 Method and means for an overflow assembly to bathtubs and the like
US10/738,765 US20040111797A1 (en) 2002-08-16 2003-12-17 Overflow assembly for bathtubs and the like

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US10/738,765 US20040111797A1 (en) 2002-08-16 2003-12-17 Overflow assembly for bathtubs and the like

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US10/674,862 Continuation US20040068793A1 (en) 2000-06-13 2003-09-30 Method and means for an overflow assembly to bathtubs and the like

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US20040111797A1 true US20040111797A1 (en) 2004-06-17

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US10/674,862 Abandoned US20040068793A1 (en) 2000-06-13 2003-09-30 Method and means for an overflow assembly to bathtubs and the like
US10/738,765 Abandoned US20040111797A1 (en) 2000-06-13 2003-12-17 Overflow assembly for bathtubs and the like
US10/738,772 Active US7127752B2 (en) 2000-06-13 2003-12-17 Overflow assembly for bathtubs and the like

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US10/674,862 Abandoned US20040068793A1 (en) 2000-06-13 2003-09-30 Method and means for an overflow assembly to bathtubs and the like

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US20080098517A1 (en) * 2000-06-13 2008-05-01 Wcm Industries, Inc. Method and Associated Apparatus for Assembling and Testing a Plumbing System
US20080235866A1 (en) * 2000-06-13 2008-10-02 Wcm Industries, Inc. Overflow Assembly for Bathtubs and the Like
US20100037392A1 (en) * 2008-08-18 2010-02-18 Wcm Industries, Inc. Cable actuated drain
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US8321970B2 (en) 2000-06-13 2012-12-04 Wcm Industries, Inc. Method and associated apparatus for assembling and testing a plumbing system
US8769736B2 (en) 2010-10-01 2014-07-08 Wcm Industries, Inc. Device for concealing a plate associated with overflow plumbing
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US10443220B2 (en) 2016-08-12 2019-10-15 Wcm Industries, Inc. Device for providing improved drainage
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US7237280B1 (en) 2004-10-13 2007-07-03 The Keeney Manufacturing Company Tub overflow assembly
US20080196161A1 (en) * 2004-10-22 2008-08-21 Wcm Industries, Inc. Flexible Bathtub Waste Pipe Assembly for Bathtubs and the Like
USD674883S1 (en) 2004-10-22 2013-01-22 Wcm Industries, Inc. Flexible bathtub waste pipe assembly
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US8813272B2 (en) 2010-10-19 2014-08-26 Wcm Industries, Inc. Device and method for concealing a flange of a waste water strainer
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US10563385B1 (en) 2016-05-17 2020-02-18 Wcm Industries, Inc. Overflow cover interconnection system
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MXPA03007344A (en) 2004-07-23
US6637050B1 (en) 2003-10-28
US20040068793A1 (en) 2004-04-15
US20040128757A1 (en) 2004-07-08
CA2437448A1 (en) 2004-02-16
US7127752B2 (en) 2006-10-31
CA2437448C (en) 2007-11-06

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