Apparatus and method for placement of a water closet fitting
A water closet fitting allows placement of a water closet flange in fluid communication with a waste pipe of a plumbing system. The water closet fitting includes a cap with a removable, pressure resistant cap portion sealing off an inlet. The cap portion may be removed to permit fluid to flow through the inlet. The water closet flange is sealably mounted to the water closet fitting once the cap portion is removed. The waste pipe is sealably connected to the water closet fitting below the cap.
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The present invention relates generally to accommodations for plumbing fittings. More specifically, the present invention relates to water closet fittings for use in connecting water closets to plumbing systems.
A common method for installing water closets involves forming a channel through a concrete floor upon which a water closet is to be installed. The channel accommodates fluid connection means for connecting the water closet to a waste pipe of a plumbing system. Various methods are used for forming such channels through concrete floors. In one method, concrete is poured around either a cast-in-place channel device or a sleeve. In another method, the channel is formed after pouring the concrete floor by core drilling through the concrete floor to form the channel.
After a channel has been provided through the concrete floor, a water closet flange is installed near an inlet end of the channel. The water closet flange is typically sealed to an inlet end of a waste pipe and secured to the concrete floor with fasteners drilled into the concrete. When secured to the concrete floor, the water closet flange provides a stabile platform for anchoring a water closet to the floor and placing the water closet in fluid communication with a waste pipe of a plumbing system.
Before placing a water closet in fluid communication with a waste pipe, the waste pipe is typically pressurized to check for leaks in the waste pipe or associated plumbing system. To allow the waste pipe to be pressurized, the inlet end of the waste pipe is sealed off. This is typically accomplished by sealing a water closet flange equipped with a sealing means, such as a pressure cap, to the waste pipe. Alternatively, a plug may be positioned inside the waste pipe.
Current methods for placing water closet flanges in fluid communication with waste pipes are labor intensive and/or prone to error. Water closet flanges are often installed early in a structure's construction process to allow waste pipes and/or associated plumbing systems to be pressurized and checked for leaks. Such installations and testing often occurs before any partition walls, or other notable landmarks, have been constructed inside the structure, which can make it difficult to align the water closet flange for subsequent proper orientation of a water closet on the flange. Although most water closet flanges offer some degree of flexibility for orienting water closets relative to the water closet flange, the alignment of a water closet flange dictates the general orientation of its water closet. As a result, care must be taken when installing a water closet flange to avoid an incorrect alignment, which will be costly and time-consuming to correct.
BRIEF SUMMARY OF THE INVENTIONThe present invention is directed to a method for placing a water closet flange in fluid communication with a waste pipe of a plumbing system. The method includes providing a channel, and capping the channel with a water closet fitting. Concrete is poured around the channel to form a floor thereabout. An inlet end of the waste pipe is sealed to the water closet fitting. A cap portion of the water closet fitting is removed to permit fluid flow through the water closet fitting and into the waste pipe. A water closet flange is sealed to the water closet fitting.
In another embodiment, the present invention is directed to an adaptor insert for placement inside a channel body to allow a water closet flange to be mounted relative to the channel body after pouring a concrete floor around the channel body. The adaptor insert includes a cap mountable on an end of the channel body. The cap includes a removable, pressure-resistant cap portion that, upon removal, permits fluid flow through the cap. An annular mating surface is attached to the cap and adapted to extend inside the channel body.
In another embodiment, the present invention is directed to a water closet fitting for placement inside a channel body providing a passage through a concrete floor of a structure. The water closet fitting includes a flow path having an inlet adapted to sealably mate with a collar of a water closet flange and an outlet adapted to sealably mate with a waste pipe of a plumbing system. A cap is attached to the flow path adjacent the inlet and sized to seal off the flow path. The cap includes a removable, pressure-resistant cap portion that, upon removal, permits fluid flow from the inlet to the outlet.
BRIEF DESCRIPTION OF THE DRAWINGS
While the above-identified drawing figures set forth one illustrative embodiment of the invention, other embodiments are also contemplated, as noted in the discussion. In all cases, this disclosure presents the invention by way of representation and not limitation. It should be understood that numerous other modifications and embodiments can be devised by those skilled in the art, which fall within the scope and spirit of the principles of the invention. The figures may not be drawn to scale. Like reference numbers have been used throughout the figures to denote like parts.
DETAILED DESCRIPTION The present invention includes a water closet fitting for mounting to a channel extending through a concrete floor upon which a water closet is to be installed. The channel accommodates fluid connection means for connecting the water closet to a waste pipe of a plumbing system.
Channel body 16 includes annular sidewall 18 that defines passage 20 having inlet 22 and outlet 24. As shown in
In addition to channel body 16, any other means known in the art for forming a channel through a concrete floor may be used in conjunction with the present invention. For example, the channel may also be formed by core drilling through a concrete floor or pouring a concrete floor around a sleeve or other channel-forming device.
Removable cap portion 40 is connected to rim 42 by frangible connection 44. Frangible connection 44 is a line of weakness in cap 32 that may be formed by any means known in the art including, for example, scoring, notching, creasing, and molding or machining cap 32 to have a reduced thickness region. Frangible connection 44 allows removable cap portion 40 to be dislodged from cap 32 to unseal inlet 36, yet, while unbroken, serves to sealably connect cap portion 40 to rim 42.
As shown in
In other embodiments, removable cap portion 40 is removably connected to cap 32 using any other means known in the art for forming a removable seal. For example, in one embodiment, cap 32 and removable cap portion 40 are removably sealed together in a threaded relationship. In still other embodiments, cap 32 and removable cap portion 40 are removably sealed together with clamps or other fasteners.
Cap 32 includes snap connectors 48 formed in rim 42 for securing cap 32 to channel body 16. In the embodiment of
Collar 34 extends from cap 32 and includes exterior surface 50 and interior surface 52. As shown in
Riser body 60 further includes interior stop 80 and exterior stop 82. Interior stop 80 is provided as a reduced diameter portion of annular interior surface 64 between female inlet surface 74 and female outlet surface 76. Specifically, interior stop 80 has a smaller diameter than female outlet surface 76. Exterior stop 82 is provided on exterior surface 66 as an enlarged diameter portion adjacent male surface 78. Specifically, exterior stop 82 has a larger diameter than annular exterior surface 66. In other embodiments, interior stop 80 comprises one or more projections (such as, for example, knobs) extending radially inward from annular interior surface 64 into flow path 68 and exterior stop 82 comprises one or more projections extending radially outwards from exterior surface 66. In still other embodiments, interior stop 80 and exterior stop 82 may comprise any type of stop known in the art in any number and combination.
Thus, when located inside channel body 16, water closet fitting 30 and riser body 60 function together as an adaptor insert to anchor water closet flange 92 relative to channel body 16 and place water closet flange 92 in fluid communication with waste pipe 94. In one embodiment of the present invention, water closet fitting 30 and riser body 60 are integral with one another and constitute a unitary water closet fitting.
Riser body 60 and waste pipe 94 are sealed together either before or after pouring concrete floor 96.
In an alternate embodiment, riser body 60 is configured so that female outlet surface 76 has a diameter that is larger than the diameter of male surface 100 of waste pipe 94. This feature allows inlet end 96 of waste pipe 94 to be inserted into outlet 72 of riser body 60 so that male surface 100 can be adhered and sealed to female outlet surface 76 (using suitable sealant materials). Interior stop 80 is provided adjacent to female outlet surface 76 so inlet end 96 abuts exterior stop 82 when riser body 60 and waste pipe 94 are fully mated.
In still another embodiment, riser body 60 is configured so that female outlet surface 76 is sized to sealably mate with one size of waste pipe and male surface 78 is sized to sealably mate with a different size of waste pipe. In an exemplary embodiment, female outlet surface 76 is sized to sealably mate with an outer surface of three-inch-inner-diameter waste pipe and male surface 78 is sized to sealably mate with an inner surface of four-inch-inner-diameter waste pipe.
As illustrated in
Once the components have been sealably assembled as in the configuration of
Before sealing water closet flange 92 to riser body 60, removable cap portion 40 must be removed to expose inlet 36. In this embodiment, removable cap portion 40 may be removed by striking the top of removable cap portion 40 to break frangible connection 44 and cause removable cap portion 40 to dislodge into gap 97 and come to rest against inlet 70 of riser body 60. In one embodiment (see, e.g.,
Once removable cap portion 40 has been removed, water closet flange 92 can be sealably mated to riser body 60.
To sealably mate water closet flange 92 and riser body 60, mating collar 100 is inserted into inlet 36 of water closet fitting 30 until mating collar 100 engages riser body 60 and flange 98 abuts rim 42 or concrete floor 96. In this configuration, annular mating surface 104 is adhered and sealed to female inlet surface 74 of riser body 60 (using suitable sealant materials). If concrete floor 96 is poured higher than expected, flange 98 can be spaced from rim 42 to account for the additional height, yet still be adhered and sealed to female surface 74. Once water closet flange 92 is sealably mated to riser body 60, a water closet (not shown) can be secured to water closet flange 92.
In an alternate embodiment, water closet flange 92 is sealably mated to water closet fitting 30 instead of riser body 60. In this alternate embodiment, water closet fitting 30 is sized so that annular mating surface 104 of water closet flange 92 can be adhered and sealed to interior surface 52 of water closet fitting 30.
Water closet fitting 30 and riser body 60 are formed from any suitable material known in the art. Examples of suitable materials include plastics (such as, for example, PVC or ABS) and metals (such as, for example, cast iron or steel). In an exemplary embodiment, water closet fitting 30 and riser body 60 are both formed from plastic, and sealably mated to each other and other parts (as described in conjunction with
As described above, the water closet fitting of the present invention provides an efficient system for placing a water closet flange in fluid communication with a waste pipe of a plumbing system. The water closet fitting allows a water closet flange to be installed after pressure testing the plumbing system. As such, the water closet flange may be installed immediately prior to installing a water closet, thereby reducing the chances of costly water closet orientation errors. In addition, the water closet fitting of the present invention allows a water closet flange to be installed without having to screw fasteners into a concrete floor.
Although the present invention has been described with reference to preferred embodiments, workers skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention.
Claims
1. A method for placing a water closet flange in fluid communication with a waste pipe of a plumbing system, the method comprising:
- providing a channel;
- capping the channel with a water closet fitting;
- pouring concrete around the channel to form a floor thereabout;
- sealing an inlet end of the waste pipe to the water closet fitting;
- removing a cap portion of the water closet fitting to permit fluid flow through the water closet fitting and into the waste pipe; and
- sealing a water closet flange to the water closet fitting.
2. The method of claim 1, and further comprising:
- pressurizing the waste pipe before removing the cap portion of the water closet fitting.
3. The method of claim 1, and further comprising:
- forming the water closet fitting from a base member and a top member.
4. The method of claim 3, and further comprising:
- sealing the base member and the top member together.
5. The method of claim 4, wherein the base member is sealed to the inlet end of the waste pipe before sealing the base member to the top member.
6. The method of claim 1, wherein the first sealing step comprises:
- aligning the inlet end of the waste pipe relative to the water closet flange.
7. An adaptor insert for placement inside a channel body to allow a water closet flange to be mounted relative to the channel body after pouring a concrete floor around the channel body, the adaptor insert comprising:
- a cap mountable on an end of the channel body, the cap including a removable, pressure-resistant cap portion that, upon removal, permits fluid flow through the cap; and
- an annular mating surface attached to the cap and adapted to extend inside the channel body.
8. The adaptor insert of claim 7, and further comprising:
- a riser body defining a fluid passage and having an inlet end and an outlet end, wherein the inlet end of the riser body is formed to mate with the annular mating surface.
9. The adaptor insert of claim 8, wherein the outlet end of the riser body has an exterior surface including a male surface adapted to sealably mate with a female surface on an inlet end of the waste pipe.
10. The adaptor insert of claim 9, wherein an exterior stop is provided on the exterior surface of the riser body to abut the inlet end of the waste pipe when the riser body and waste pipe are fully mated.
11. The adaptor insert of claim 10, wherein the exterior surface of the riser body is an annular surface, and wherein the exterior stop comprises an enlarged diameter portion of the exterior annular surface of the riser body.
12. The adaptor insert of claim 8, wherein the outlet end of the riser body has an interior surface including a female surface adapted to sealably mate with a male surface on an inlet end of the waste pipe.
13. The adaptor insert of claim 12, wherein an interior stop is provided on the interior surface of the riser body to abut the inlet end of the waste pipe when the riser body and waste pipe are fully mated.
14. The adaptor insert of claim 13, wherein the interior surface of the riser body is an annular surface, and wherein the interior stop comprises a reduced diameter portion of the interior annular surface of the riser body.
15. The adaptor insert of claim 7, wherein the removable cap portion is connected to the cap by a frangible connection.
16. The adaptor insert of claim 7, wherein the cap mechanically engages the end of the channel body.
17. The adaptor insert of claim 16, wherein the cap mechanically engages the end of the channel body by an interference friction fit therebetween.
18. A water closet fitting for placement inside a channel body providing a passage through a concrete floor of a structure, the water closet fitting comprising:
- a flow path comprising: an inlet adapted to sealably mate with a collar of a water closet flange; an outlet adapted to sealably mate with a waste pipe of a plumbing system; and
- a cap attached to the flow path adjacent the inlet and sized to seal off the flow path, the cap including a removable, pressure-resistant cap portion that, upon removal, permits fluid flow from the inlet to the outlet.
19. The water closet fitting of claim 18, wherein the removable cap portion is connected to the cap by a frangible connection.
20. The water closet fitting of claim 18, wherein the outlet of the flow path has an exterior surface including a male surface adapted to sealably mate with a female surface on an inlet end of the waste pipe.
21. The water closet fitting of claim 20, wherein an exterior stop is provided on the exterior surface of the outlet to abut the inlet end of the waste pipe when the outlet and waste pipe are fully mated.
22. The water closet fitting of claim 21, wherein the exterior surface of the outlet is an annular surface, and wherein the exterior stop comprises an enlarged diameter portion of the exterior annular surface of the outlet.
23. The water closet fitting of claim 18, wherein the outlet end of the flow path has an interior surface including a female surface adapted to sealably mate with a male surface on an inlet end of the waste pipe.
24. The water closet fitting of claim 23, wherein an interior stop is provided on the interior surface of the outlet to abut the inlet end of the waste pipe when the outlet and waste pipe are fully mated.
25. The water closet fitting of claim 24, wherein the interior surface of the outlet is an annular surface, and wherein the interior stop comprises a reduced diameter portion of the interior annular surface of the outlet.
26. The water closet fitting of claim 18, wherein the cap mechanically engages an end of the channel body.
27. The water closet fitting of claim 26, wherein the cap mechanically engages the end of channel body by an interference friction fit therebetween.
Type: Application
Filed: Dec 30, 2004
Publication Date: Jul 6, 2006
Applicant:
Inventors: Matthew Reier (Eagan, MN), Dana Decker (Woodbury, MN)
Application Number: 11/026,211
International Classification: E03D 11/00 (20060101); E03D 11/14 (20060101);