Hydrostatic test cap
OwnerKenneth R. Cornwallinventor
Life of this patent
Estimating the term…
Abstract
A test cap (10) for use with a building drain (102) to allow hydrostatic testing of the building drain. The test cap includes an end wall (12) with a sidewall (14) extending around the perimeter of the end wall. The top side (12A) of the end wall is provided with an annular groove (16) which surrounds a center portion (18) of the test cap. The diameter of the groove is such that a standard sized pipe (104) can be used to apply force to the groove to detach the center portion from the end wall of the test cap. Once hydrostatic testing is complete, the center portion is detached from the end wall of the test cap and removed to allow access to the building drain.
Claims16
A coupling assembly for use in hydrostatic testing of a building drain, which comprises:
- (a) a coupling having a first end and a second end with a center bore extending between the ends and configured to be connected to the building drain at the second end, wherein the center bore of the coupling has a tapered portion adjacent the first end of the coupling so that a first diameter of the center bore at the first end of the coupling is greater than a second diameter of the center bore at an end of the tapered portion spaced apart from the first end of the coupling;
- and
- (b) a test cap having a first side and a second side and mounted on the first end of the coupling such that the second side of the test cap is adjacent to and spaced apart from the first end of the coupling such as to close the center bore of the coupling at the first end of the coupling, the first side of the test cap having an annular groove forming a center portion wherein the second diameter of the center bore of the coupling is less than a diameter of the center portion of the test cap and wherein the groove provides a weakened area on the first side such that in use, after the hydrostatic testing of the building drain is complete, the center portion of the test cap is detached from the test cap at the groove to provide an opening through the test cap to allow access to the center bore of the coupling and moves into the center bore of the coupling and stops at the end of the tapered portion spaced apart from the first end of the coupling to allow for removal of the center portion from the coupling.
A test cap for mounting on a drain pipe for use in hydrostatic testing of a building drain, which comprises:
- (a) an end wall having a circular shape with an edge around a circumference of the end wall and having a first side and a second side;
- (b) an annular groove formed in the first side of the end wall and spaced apart from the edge of the end wall wherein a width of the annular groove is at least equal to a width of a standard drain pipe;
- (c) a center portion having a circular shape and formed in the end wall by the groove on a side of the groove opposite the edge of the end wall;
- and
- (d) a sidewall mounted on the edge of the end wall on the second side of the end wall and extending outward in a direction away from the first side of the end wall and configured to accommodate an end of the drain pipe of the building drain.
A method for hydrostatic testing of a building drain which comprises the steps of:
- (a) providing a test cap having an end wall having a first side and a second side with a groove on the first side forming a center portion;
- (b) mounting the test cap on an open end of the building drain;
- (c) performing a hydrostatic test on the building drain;
- (d) detaching the center portion from the test cap by applying a force to the groove on the first side of the test cap which detaches the center portion from the remainder of the test cap at the groove such that the center portion drops into the open end of the building drain;
- and
- (e) removing the center portion from the building drain by grabbing the center portion and moving the center portion through an opening in the test cap formed by the detachment of the center portion.
Dependencies are inferred from the claim text.