Sanitary Tee or Wye fitting component and use in a DWV system
AssigneeDelve Holdings, LLC
InventorRobert M. Williams
Life of this patent
Estimating the term…
Abstract
An internal boss can have an outer side surface shaped to match the bored opening of the Drain, Waste, and Vent (DWV) pipe, an inner side surface shaped to align with an interior pipe surface of the sanitary Tee or Wye fitting component, and an internal face surface of the boss extending between the side surfaces and shaped to align with an interior pipe surface of the DWV pipe when welded thereto. Snap-fit wings can hold the interior face surface of the sanitary Tee or Wye fitting component against an exterior face surface of the DWV pipe while the fitting component and DWV pipe are homogeneously weldable into a single DWV fitting using a solvent mixture including a common plastic material. Related methods and single homogeneous fittings are also provided.
Claims15
A single homogeneous Drain, Waste, and Vent (DWV) fitting comprising:
- a DWV pipe made of a plastic material and having an opening bored into a wall thereof,
- a sanitary Tee or Wye fitting component made of the plastic material and comprising:
- an internal boss extending from an interior face surface, the internal boss having an outer side surface shaped to match the bored opening of the DWV pipe, an inner side surface aligned with an interior pipe surface of the sanitary Tee or Wye fitting component orientable to provide directional flow into the DWV pipe, and an internal face surface of the boss extending between the side surfaces and shaped to align with an interior pipe surface of the DWV pipe when welded thereto, and a width of the boss from the outer to inner side surfaces along the internal face being different at different points around the circumference of the boss as a result of the interior pipe surface being orientable to provide directional flow into the DWV pipe;
- a pair of snap-fit wings arrayed to hold the interior face surface of the sanitary Tee or Wye fitting component against an exterior face surface of the DWV pipe;
- wherein the sanitary Tee or Wye fitting component and DWV pipe are weldable into the single homogeneous fitting using a solvent mixture including the plastic material dissolved in solvents applied between the interior face surface of the sanitary Tee or Wye fitting component and the exterior face surface of the DWV pipe as the interior face surface of the sanitary Tee or Wye fitting component is held against the exterior face surface of the DWV pipe by the snap-fit wings until the solvent evaporates.
A method of forming a single homogeneous Drain, Waste, and Vent (DWV) fitting from a DWV pipe and at least one sanitary Tee or Wye fitting component made of a common plastic material;
- for each sanitary Tee or Wye fitting component, the method comprising:
- boring an opening in a wall of the DWV pipe;
- positioning an internal boss extending from an interior face surface of the sanitary Tee or Wye fitting component into the bored opening of the DWV pipe in an orientation to provide directional flow into the DWV pipe and to cause (1) an outer side surface of the internal boss to mate with a side edge of the bored opening of the DWV pipe, and (2) an internal face surface of the boss adjacent the outer side surface to align with an interior pipe surface adjacent the side edge of the bore of the DWV pipe and (3) a first portion of the internal boss having a first thickness along the internal face surface to be located at a downstream side of the DWV pipe and a second portion of the internal boss having a second thickness along the internal face surface that is different from the first thickness to be located at a midpoint between the downstream side and an upstream side of the DWV pipe;
- applying a solvent mixture including the plastic material dissolved in solvents to the interior face surface of the sanitary Tee or Wye fitting component, or to the exterior face surface of the DWV pipe, or to both;
- coupling a pair of snap-fit wings of the sanitary Tee or Wye fitting component around the DWV pipe to hold the interior face surface of the sanitary Tee or Wye fitting component against the exterior face surface of the DWV pipe while the solvent mixture welds the sanitary Tee or Wye fitting component and DWV pipe into the single homogeneous fitting.
Dependencies are inferred from the claim text.