Gasket seals for drain closures
AssigneeDanco, Inc.
InventorsRobert Clifton Jones, Jr., Muhammad Towheed Hossain, Casey J. Fregoe
Life of this patent
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Abstract
An exemplary embodiment, among others, of the present disclosure is directed to a drain closure assembly. A head of the drain closure assembly 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 is fastened around an outer cylinder of the stem below the head. The gasket 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.
Claims12
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,
- wherein the stem comprises an outer cylinder adjacent to the top end of the stem that is positioned around an inner cylinder at a bottom end of the stem, wherein the top end of the stem comprises a threaded portion that couples with the head of the drain closure assembly,
- wherein a width of the outer cylinder is larger than a width of the top end of the stem, wherein a width of the outer cylinder is equivalent to the width of the threaded portion;
- and
- a gasket fastened around an outer cylinder of the stem below the head,
- wherein the gasket 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,
- wherein a vertical positioning of the gasket does not overlap with a vertical positioning of the head of the drain closure assembly on the stem.
Dependencies are inferred from the claim text.