Gasket seals for drain closures
An exemplary embodiment, among others, of the present disclosure is directed to a drain closure assembly. Such an assembly has a head of the drain closure assembly that is fastened to a top end of a stem, wherein the bottom end of the stem is insertable in a drain shoe. The assembly further includes a gasket fastened around an outer cylinder of the stem below the head. Accordingly, the gasket comprises a series of concentric annular platforms such that a force applied to a top surface of the gasket causes an upper concentric annular platform having a smaller outer diameter to be compressed before the lower concentric annular platform having a larger outer diameter is compressed, thereby creating a seal between the head of the drain closure assembly and the drain shoe.
1. A drain closure assembly comprising:
a head of the drain closure assembly that is fastened to a top end of a stem, wherein a bottom end of the stem is insertable in a drain shoe; and
a gasket fastened around an outer cylinder of the stem below the head, wherein the gasket comprises a series of concentric internal annular platforms of at least an upper concentric internal annular platform and a lower concentric internal annular platform, wherein the upper concentric internal annular platform is in contact with and supported by the lower concentric internal annular platform such that a force applied to a top surface of the gasket causes the upper concentric internal annular platform having an outer diameter to be compressed before the lower concentric internal annular platform having a larger outer diameter is compressed, wherein the upper concentric internal annular platform has a right circular cylindrical shape and the lower concentric internal annular platform has a right circular cylindrical shape,
wherein the gasket further comprises an upper outer portion and a lower outer portion that each meet at a line that defines a hinge at which the gasket is able to bend, wherein the lower outer portion features a sloped surface from a bottom edge of a rim of the gasket to the line at a top of the lower outer portion, wherein the upper outer portion has a right circular cylinder shape.
2. The drain closure assembly of claim 1 , wherein the gasket is an elastic resilient material.
3. The drain closure assembly of claim 1 , wherein the head of the drain closure assembly is a metallic material.
4. The drain closure assembly of claim 1 , wherein a bottom end of the stem is threaded.
5. The drain closure assembly of claim 1 , wherein a height of the drain closure assembly is 2.25 inches.
6. The drain closure assembly of claim 1 , wherein a width of the head is 2.0 inches.
7. The drain closure assembly of claim 1 , wherein the head of the drain closure assembly is threaded onto the top end of the stem.
8. The drain closure assembly of claim 1 , wherein the head of the drain closure assembly is spring actuated to move to an open position from a closed position.
9. The drain closure assembly of claim 1 , wherein the stem comprises a ⅜ inch threaded post.
10. The drain closure assembly of claim 1 , wherein the stem comprises a 5/16 inch threaded post.
11. The drain closure assembly of claim 1 , wherein the head of the drain closure assembly is a plastic material.
12. The drain closure assembly of claim 1 , wherein the stem comprises the outer cylinder at a top end of the stem that is positioned around an inner cylinder at a bottom end of the stem.
13. The drain closure assembly of claim 12 , wherein the outer cylinder is movable in a vertical direction over the inner cylinder of the stem.
14. The drain closure assembly of claim 13 , wherein the head of the drain closure assembly is adapted to slide downwardly until the gasket is flattened against a flange of the drain shoe.