Pipe joints or couplings – End to side or plate
Reexamination Certificate
2000-08-10
2001-12-04
Nicholson, Eric K. (Department: 3627)
Pipe joints or couplings
End to side or plate
C285S039000, C285S045000, C052S232000
Reexamination Certificate
active
06325423
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a pipe adapter, especially an arrangement with a female pipe adapter or a female pipe adapter, in particular for bottom pans, sewer or water mains, raceways or similar components. The arrangement or the adapter has a cylindrical pipe section which ends in a main pipe or raceway or may be integrally formed in one piece with same, to carry the medium, and with a second pipe section of larger inside diameter than the first pipe section that is connected to and formed preferably in one piece with the first pipe section, into which the connector pipe to be installed into female pipe adapter can be inserted. Fir sealing the connector pipe, a seal , such as a lip seal, is provided whose one end is insertable into the second pipe section and may ne tightly connected by a fastening or chuck to the inside surface of the second pipe section, and whose other end tightly is adjoinable to the outside surface of connector pipe or is or can be tightly connected to this outside surface by a fastening or clamping means. A bottom pan is also disclosed.
The application also concerns designing a wall opening of a bottom pan, sewer or water main, raceway or similar component, using a seal for tightly connecting a connector pipe to the opening formed in one side of the wall. One end of seal is insertable into the wall opening and may be tightly connected to inside wall surface with fastening or chucking means, and whereby the other end tightly adjoins to the outside surface or an connector pipe.
Furthermore, the application concerns a bottom pan having a U-shaped or V-shaped cross section for raceway carrying a liquid medium. Here, the bottom pan is connectable to at least one connector pipe carrying the medium. The bottom pan in this structure has an opening that is formed to accommodate an connector pipe. A seal is provided for tightly connecting the connector pipe to the opening formed in one side of the wall. One end of the seal is insertable into the opening with a cylindrical inside wall surface and is connectable to the inside wall surface of the opening with a fastening or chucking means, while the other end is or can be tightly adjoined to the outside surface with a fastening or clamping means.
Lastly, the application concerns a mold core for producing an arrangement or a female pipe adapter.
2. Description of the Related Art
It is known in prior art to integrate or mold female pipe adapters into a main-pipe wall, whereby a lip seal is used to connect the connector pipe tightly to the female pipe adapter. For this purpose, such lip seals are provided with a fastening or chucking means lying inside the lip seal at the end where the lip seal is to be connected to the female pipe adapter, which fastening or chucking means is used to apply pressure to the inside surface of the lip seal, providing a seal by pressing its outside surface to the inside surface of the female pipe adapter. The inside surface of the other end of the lip seal, away from the pipe adapter, is pressed tightly against the outside surface of the connector pipe with another fastening or clamping means that applies pressure to the outside surface of the lip seal. In this manner, a medium-tight connection between connector pipe and female pipe adapter is provided, and due to the elasticity of the lip seal, which is preferably formed of rubber, the connector pipe can be adjusted or fixed in certain angular positions in relation to the female pipe adapter.
The operation of the fastening or chucking means for the end of the lip seal lying in the female pipe adapter presents difficulties. Difficulties arise in particular when the diameter of the female pipe adapter is larger in the end region into which the lip seal is inserted than the diameter of the other end region which may, for example, end in a main pipe.
SUMMARY OF THE INVENTION
An objective of the invention is to create an arrangement with a female pipe adapter or a female pipe adapter in which problems in terms of the accessibility of the fastening or clamping means are solved; however, at the same time, this female pipe adapter is to have a special design and to be provided with a facility or receptacle for the forward end region of the connector pipe to be inserted into the female pipe adapter.
This objective is achieved through an arrangement with a female pipe adapter or a female pipe adapter of the type mentioned above, according to the invention, in that a transitional pipe section is formed in the transitional region between a first pipe section and a second pipe section, into which preferably the end region of connector pipe can be inserted and in which a recess is provided through which an actuator unit of a fastening or chucking means for the end of a seal inserted into the second pipe section is accessible and adjustable from the first pipe section.
For accommodating the forward end region of the connector pipe, an adapter pipe section is formed in the female pipe adapter offering a facility of receptacle for the forward end region of the connector pipe, but without interfering with the positioning or position changes afforded by the elastic lip seal. Because this adapter pipe section between the first pipe section and the second pipe section is extending from the first to the second pipe section with the larger diameter, it would interfere with access to the actuator unit of the fastening or chucking means, since this actuator unit is situated in the circumferential region of the second pipe section. To avoid having to adjust this actuator unit through the first pipe section , which is also particularly difficult because the fastening or chucking means can come quite close to the first pipe section or the adapter pipe section, which have a smaller diameter than the second pipe section, a recess is formed in the adapter pipe section through which the actuator unit is made directly accessible for a tool such as a socket wrench, etc. This recess can be formed without impairing the sealing effect provided by the lip seal between the female pipe adapter and the connector pipe or without impairing the stability of the female pipe adapter. It is particularly advantageous that the necessary subsequent adjustments or regulation of the actuator unit is always possible with easy access to the integrated female pipe adapter.
Advantageously, the invention provides for a stable design and a defined facility or receptacle for the forward end region of the connector pipe and which also allow for sufficient swivelling or a change in position suitable for all kinds of applications.
Because a structurally advantageous and stable design is achieved, it is easier to construct the female pipe adapter in one piece.
To prevent the recess from filling up, for example when being installed in a main pipe while concrete for a main pipe wall is being poured. This surrounds and protects the recess in a housing-like fashion. To improve accessibility and the possibility of penetration through the recess thus enclosed in housing-like fashion.
To integrate the female pipe adapter into a main-pipe wall or into the wall of a bottom pan preferably molded in one piece. If the first pipe section, the outside wall section and the side wall sections end in the inside wall of the main pipe or in one piece in an inner lining of the main pipe or in a raceway, sealing between a pipe adapter according to the invention and the main pipe or the raceway or a bottom pan becomes easy. This also prevents the accumulation of contaminants.
Further, the invention pertains to an advantageous arrangement or female pipe adapter with a compensation element which is meant to take into account the different wall thicknesses and/or inside and/or outside diameters of the connector pipes. To prevent that such compensation elements can interfere with access to the actuator unit, an appropriately large recess or appropriately wide gap is provided in the circumferential region of this compensation element.
The recess or gap in the compens
Darby & Darby
Nicholson Eric K.
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